Technical Specifications - English

TECHNICAL SPECIFICATIONS GENERAL LINES AND CEB 161 KV 330 KV, AND SPECIFICATIONS FOR ONLINE CEB 330 KV

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TABLE OF CONTENTS

PAGE

1 INTRODUCTION 1 2 PROJECT DESCRIPTION 2 2.1 General 2 2.2 Market 1A ‐ Line 330 kV Sakété ‐ Togo‐Benin border 3 2.3 Market 1B ‐ 330 kV Line border between Togo and Benin ‐ Lome‐C ‐ Ghana‐Togo border 3 2.4 Market 1C ‐ 161 kV Line Lome‐C ‐ 161 kV lines and Légbassito 3

artery cut in Momé Hagou ‐ Lome‐C ‐ Lome Aflao 3 SCOPE OF WORK AND LINES 161 KV 330 KV 4 3.1 general 4 3.2 other 5 3.2.1 Norms and standards 5 3.2.2 Coordination 5 3.2.3 Documentation 6 3.3 deliverables 6 3.3.1 Timing control work 7 3.3.2 Progress Report 7 3.3.3 Route of the transmission line 7 3.4 Access to site 8 3.5 Operation manuals and maintenance 8 3.6 Quality control during the execution of works 9 3.7 Security measures 9 3.7.1 Safety Plan 10 3.7.2 Accident prevention 10 3.7.3 Work in areas under tension 11 4 DESIGN CRITERIA ‐ 330 KV LINES 16 4.1 general 16 4.2 clearances 16 4.3 climatic conditions 17 4.4 pollution 18 4.5 Limit voltage conductors 18 4.6 Resistance factors and safety 18 5 STANDARDS, STANDARDS AND CODES 330 KV 19 6 DRIVER 330 KV 20 6.1 general 20 6.2 standards 20 6.3 Characteristics of the driver 20 6.4 Information required in accordance with IEC 61089 21 6.5 manufacturing 22 6.6 tests 22 6.7 marking 22 6.8 packing 23 6.8.1 reels 23 6.9 deliverables 24

6.9.1 Deliverables required with the submission 24 6.9.2 Required deliverables after contract award 25 7 CABLE GUARD STEEL ALUMINUM CLAD 330 KV 26 7.1 General 26 7.2 Standards 26 7.3 Characteristics of the cable guard 26 7.4 Information required in accordance with IEC 61 089 27 7.5 Testing and Reporting 27 7.5.1 Reports 28 7.6 Marking 28 7.7 Packaging 29 7.7.1 Reels 29 7.8 Deliverables 29 7.8.1 Deliverables required with submission 29 7.8.2 Deliverables required after contract award 30 8 AIR GUARD CABLE FIBER OPTIC AND ACCESSORIES 330 KV 31 8.1 General 31 8.2 Standards 31 8.3 Characteristics of the shield wire to optical fibers (OPGW) 32 8.4 Manufacturing 32 8.5 Installation of TF 33 8.5.1 Installation of fiber optic conduits 34 8.5.2 Installation in conduits not yet occupied 34 8.5.3 Installation in ducts already occupied 34 8.5.4 Direct Burial 36 8.5.5 Air 36 8.5.6 Shelf with cables 36 8.5.7 Other 36 8.5.8 Splices, joints and terminations. 36 8.5.9 Patch Cords 37 8.5.10 Termination of cables 37 8.6 Testing and Reporting 38 8.6.1 Testing of optical fiber 38 8.6.2 Reports 40 8.6.3 Documentation 40 8.7 Accessories for OPGW 40 8.7.1 Mounting clamp 40 8.7.2 Suspension clamp 40 8.7.3 Shock 41 8.7.4 Junction boxes (BJ) and connectors for optical fibers 41 8.8 Terms of delivery 43 8.9 Marking 43 8.10 Packaging 44 8.10.1 Reels 44 8.10.2 Hardware and accessories 44 8.11 Deliverables 45 8.11.1 Deliverables required with submission 45

8.11.2 Deliverables required after contract award 46 9 INSULATORS AND EQUIPMENT AND CABLE DRIVER GUARD 330 KV 47 9.1 General 47 9.2 Standards 47 9.3 Insulators 47 9.4 Details of insulator chains 48 9.5 Pipe insulator strings and cable guard 49 10.4 Junction sleeves, sleeves anchors, terminal end, shell bypass 56 10.5 linings protection (Armor‐rods) 56 10.6 Vibration 56 10.7 Spacer Dampers 57 10.8 straps braces 57 10.9 Tags air warning 58 10.10 Marking 58 10.11 Packing 59 10.12 Deliverables 59 10.12.1 Deliverables required with submission 59 10.12.2 Deliverables required after contract award 59 11 GROUNDING 330 KV 61 11.1 Standards 61 11.2 Materials 61 11.2.1 Piquet Grounding 61 11.2.2 Connection cable for earthing and grounding offset 61 11.2.3 Connectors 62 11.2.4 Packing 62 11.3 Earthing of towers 62 11.3.1 Extending the ground 63 11.4 Tests on site 63 11.4.1 Resistivity of the Earth 63 11.4.2 Strength of Earth 63 11.4.3 Information Final 63 11.5 Deliverables 64 11.5.1 Deliverables required with submission 64 11.5.2 Deliverables required after contract award 64 12 STEEL LATTICE TOWER 330 KV 65 12.1 General 65 12.2 Standards and Codes 65 12.3 Type and use of pylons 66 12.4 Design of pylon 67 12.4.1 Codes 67 12.4.2 Approval 67 12.4.3 Wind 68 12.4.4 Resistance Factors 68 12.4.5 Span 68 12.4.6 Clearance distances of towers 70 12.4.7 Loads on towers 70 12.4.8 Design of frames and connections 74

12.5 Drawings of design, design notes, detail drawings and material list 75 12.5.1 Notes calculations and design drawings 75 12.5.2 Drawings details 76 12.5.3 List of Materials 76 12.6 Manufacture and general characteristics of the material 76 12.6.1 Bolts and nuts 76 12.6.2 Punching and drilling 77 12.6.3 Galvanizing 77 12.6.4 Assembly in workshop 78 12.6.5 Quality Assurance Trials 78 12.7 Accessories pylon 78 12.7.1 General 78 12.7.2 Bolts‐ levels 78 12.7.3 Signs 79 12.7.4 Anti‐climbing devices 79 12.7.5 Grounding of the mast cable guard 79 12.8 Packaging 79 12.9 Equipment Maintenance for live line 80 12.10 Testing 80 12.10.1 Testing pylon 80 12.10.2 Final production of the pylon 80 12.11 Deliverables 81 12.11.1 Deliverables required with submission 81 12.11.2 Deliverables required after contract award 81 FOUNDATIONS 13 330 82 KV 13.1 General 82 13.2 Design Criteria 82 13.3 Specifying the types of foundation 83 13.4 Anchoring in rock 85 13.5 Foundation Slab foundation & chimney and pyramid tile fireplace and level 85 13.6 Foundation concrete base 86 13.7 Pile Foundation 86 13.8 Connecting the amounts of mast and anchor 86 13.9 Materials 86 13.9.1 Concrete and Reinforcement 86 13.9.2 Sealing parts 87 13.10 Detailed calculations, drawings and factory building 87 13.10.1 Detailed calculations 87 13.10.2 Drawings factory and construction 87 14 TOPOGRAPHIC SURVEY AND DISTRIBUTION OF POLES 330 KV 88 14.1 General 88 14.2 Preliminary Surveying 88 14.3 Final check of the topographic survey and confirmation of the design 88 14.4 Information Required 89 14.5 topographical drawings of the transmission line 90 14.6 Distribution of pylons 91 14.6.1 Drawings of vertical and horizontal distribution of pylons 91

14.6.2 Table of tower and equipment lists 91 14.6.3 Picketing pylon 92 15 STUDY SOIL 330 KV 93 15.1 General 93 15.2 Soil Investigation 93 15.3 Methods of soil surveys 94 15.4 Report on soil survey and selection of foundations 95 16 CLEANING THE WAY 330 KV 96 17 ACCESS ROADS 330 KV 97 18 ENVIRONMENTAL MEASURES mitigations 330 KV 99 19 BUILDING FOUNDATIONS 330 KV 101 19.1 Excavation 101 19.2 Confirmation of the soil and the foundation selected 101 19.3 Backfill 101 19.4 Installation of foundations 102 19.4.1 Anchors 102 19.4.2 Concrete work 103 19.4.3 Preparation of Concrete 104 19.4.4 Formwork 105 19.4.5 Establishment and consolidation of concrete 105 19.4.6 Surface Finish 105 19.4.7 Concrete Cure 106 19.4.8 Tests on fresh concrete and hardened 106 19.5 Tolerances 107 19.6 Earthing of towers 107 20 INSTALLATION OF POLES 330 KV 108 20.1 Handling and Storage 108 20.2 Mounting Procedure 108 20.3 Tightening bolts 109 20.4 Defective Parts 109 20.5 Parts damaged 109 20.6 Damage to galvanizing 110 20.7 Signs of towers and accessories 110 20.8 Special fittings for implementation 110 21 INSTALLING THE CHAINS INSULATORS AND ACCESSORIES 330 KV 111 21.1 Insulators 111 21.2 Suspension Accessories and anchor 111 21.3 Fittings anchor and compression type joints for conductor 111 21.4 anchoring fittings compression type and seals to the shield wire of aluminum‐coated steel 111 21.5 repair sleeves 112 21.6 linings protection (Armor‐rods) 112 21.7 Vibration dampers 112 21.8 Spacer Dampers 112 22 UNWINDING CONDUCTORS 330 KV 113 22.1 General 113 22.2 Unwinding Cable 113 22.03 Draw and setting 115

22.4 Setting clamp 115 22.5 Communications 116 23 UNWINDING CABLE GUARD 330 KV 117 23.1 General 117 23.2 Unwinding 117 23.03 Draw and setting 117 23.4 Setting clamp 117 24 UNWINDING CABLE GUARD FIBER OPTIC (OPGW) 330 KV 118 24.1 General 118 24.2 Installing 118 24.03 Draw and setting 118 24.4 Anchoring and setting clamp 119 24.5 Points of connection 119 24.6 Connecting the optical fibers 119 25 CLEANING, FINAL INSPECTION AND TESTS 330KV 120 25.1 General 120 25.2 Cleaning 120 25.3 Final Inspection 120 25.4 Testing off and commissioning 121 26 SECTION 3 ‐ WORK TO 161 KV 122

1 INTRODUCTION

These specifications are part of the document 016742‐5200‐50BC‐0001‐F of the tender dossier of transmission lines 330 kV and 161 kV. This document describes the scope of work on different stretches of the following subject of this offer:

i. transmission line to 330 kV Ghana‐Togo‐Benin connecting the station to that of Sakété Davié

(Lomé‐C) and extending to the edge border between Togo and Ghana;

ii. the transmission line 161 kV between the position of Davie (Lomé‐C) as Légbassito, including the 161 kV line Davié (Lomé‐C) to break the existing 161 kV line‐to Momé Hagou Aflao and Lome.

This mandate includes the turnkey design, procurement, construction, testing, commissioning and startup of new transmission lines to 330 kV network of the CEB (Communauté Electrique du Benin) operating in the production and transmission of electricity in Benin and Togo.

More training for staff of the Master `s Work by the Manufacturer shall be made under this contract on the theme` s care and maintenance of HV lines.

This technical training for six (06) people in total divided into two (02) groups of three (03), travel and per diem will be borne by the Manufacturer. The training will take place in a specialized center for a period of three (03) weeks. Staff `s Master Work could be integrated into assembly teams` s business.

2 DESCRIPTION OF PROJECT

2.1 General

The interconnection project of the CEB grid with electricity networks in Ghana and Nigeria is part of Exchange Agreements Electric Power West Africa (WAPP) which encourages the exchange of energy between the countries of the sub ‐region of West Africa. As part of WAPP, two projects of great importances have previously been committed; it comes: the location of the line to 330 kV Aboadze Volta which transports energy to 330 kV West to East of Ghana, and the 330 kV interconnection station Sakété, Benin, in Ikeja, Nigeria.

Drawing number 016742‐6000‐47DD‐0004 "to 330 kV Interconnection Ghana ‐ Togo ‐ Benin ‐

line diagram "is included in the plans for guidance.

The interconnection project also provides for the extension of the existing position of Sakété and the implementation of the new position Davié (Lomé‐C) to ensure the connection of the new line 330 kV. Add to that all infrastructure control systems, protection and telecommunications. It is also planned implementation of the new station Légbassito and the construction of a 161kV transmission line linking this new position to that of Davie (Lomé‐C). The existing 161 kV line Momé Hagou ‐ Lome Aflao is interrupted cut artery in order to connect the new position Davié (Lomé‐C).

As part of this interconnection project, it is anticipated the works of transmission lines of high voltage power following:

Component Description Length

(km)

Market 1A (Lot 1) 330 kV line Sakété ‐ Togo‐Benin border 101

Market 1B (Lot 2) 330 kV line border between Togo and Benin – Davie 93

(Lomé‐C) ‐ Togo‐Ghana border

Market 1C (Lot 3) 161 kV line Davié (Lomé‐C) – Légbassito 14

161 kV line for the insertion of the post Davié 32

(Lomé‐C) to break the 161 kV line

existing in Lome and Aflao Momé Hagou

The transmission line 330 kV single dull phase with two conductors per phase, is horizontal configuration with two ground wires with a shield wire to optical fibers (OPGW) of 24 fibers and a cable guard made of steel wire braid covered with aluminum.

The shield wire to fiber optics will be used for line protection, data transmission to the control center and the operational and administrative communication between VRA, CEB and TCN.

The transmission line 161 kV double circuit, with a three‐phase conductor per phase, is vertical configuration with two ground wires with a shield wire to optical fibers (OPGW) of 24 fiber cable and a galvanized steel cover.

2.2 Market 1A ‐ Line 330 kV Sakété ‐ Togo‐Benin border

This section of the overhead transmission line is located in Benin. From the border Togo ‐ Benin, the line will head to the North East to join the post Sakété existing 330 kV. This post is already providing interconnection with Nigeria.

The estimated distance of this line section is 101 km located in territory of Benin.

2.3 Market 1B ‐ 330 kV Line border between Togo and Benin ‐ Lome‐C ‐ Ghana‐Togo border

The border between Togo and Benin, the 330 kV line continues its route to the station Davié (Lomé‐C) and shows that post westbound until you reach the Togo‐Ghana border, including the connection work with the 330 KV line at the Ghana‐Togo border.

The estimated distance of the line section between the border Benin‐Togo‐Ghana and Togo through the post Davié (Lomé‐C) is about 93 km of 330 kV line in Togolese territory.

Market 1C 2.4 ‐ 161 kV Line C‐Lome ‐ Légbassito and 161 kV lines cut artery Momé Hagou ‐ C‐Lome ‐ Lome Aflao

161 kV lines include the line Davié (Lomé‐C) ‐ Légbassito and sections of lines required to insert Davié (Lomé‐C) cut artery to the existing line connecting the positions Momé Hagou Aflao and Lome.

The estimated distance of the line Davié (Lomé‐C) ‐ Légbassito is about 14 km and the required sections in line Momé Hagou ‐ Davie (Lomé‐C) ‐ Lome Aflao is 32 km, for a total of

46 km of 161 kV line in Togolese territory.

3 SCOPE OF WORK AND LINES 161 KV 330 KV

3.1 General

The work includes the recognition of the route (the details of the route of the line), geotechnical investigations, detailed design, procurement, quality management, manufacturing, factory testing, transportation of materials on sites, installation, testing and commissioning of transmission lines 161 and 330 kV.

Note: Tables of coordination (Table 3‐1 and Table 3‐2 below specify but not limited to certain jobs that require coordination between various Contractors in order to meet deadlines.

It is the responsibility of each Contractor to plan its work to allow better coordination with other stakeholders Contractors.

The work must be conducted in compliance with the requirements of the following technical specifications:

016742‐5200‐F‐43ES‐0001 Technical Specifications 330 kV Lines

CEB‐0001 Technical Specifications 161 kV Lines

Without being exhaustive, the Scope of Work includes the list of key activities including work not mentioned in that list, but required for completion of the project according to specifications and standards in force.

a. The topographic survey of the final route of the line, plans and profiles, the optimized distribution of the pylons and the choice of foundations associated with each tower and location;

b. The geotechnical investigation for the design of tower foundations, preliminary measurements and final testing of soil strength for the foundation design meeting the standards in force and strict criteria for tower design based on soil type at the chosen location;

c. Preliminary steps and final testing of soil resistivity, for a good network design grounding;

d. Design, prototype fabrication lines for 161 kV and 330 kV for mechanical testing and scale manufacture of lattice steel towers including all accessories (extensions amounts) as the optimized final distribution;

e. The supply and delivery of reserve material, special tools and equipment for maintenance of transmission lines;

f. The construction of a road maintenance along the line complemented with portions of tributary roads and clearing of the corridor for construction and maintenance of a sufficient distance between the conductors in all weather conditions;

g. Transport towers to their location on the axis of the line, foundation construction, assembly of these towers on the foundations respecting the time constraints of concrete curing, the bonding of equipment unwinding cables ( conductors, OPGW, cable guard), the attachment of insulators and clamps, the final arrow set all cables and supply of construction equipment required for such operations;

h. Connections anchoring of the phase conductors and shield wires coated steel and aluminum shield wire to optical fibers (OPGW) in the portico of the station, its descent and its connection to fiber optic junction box (BJ ) at the various sites are integral parts of this contract;

Important Notes:

‐ The site of Aflao to Togo‐Ghana border optical fiber will be connected to BJ that will be installed by the Contractor on the online portal of the said site (see 8.7.4.2);

‐ On other sites, fiber‐optic cables will be connected to the BJ line installed by the Contractor in the telecommunications room on each respective site (see 8.7.4.1).

i. The supply and installation of overhead warning beacons and painting of towers, or where required;

j. Cleaning of the hold, including the disposal of wood and debris and construction of all necessary paths and site preparation of the tower. The foundations including the testing of compressive strength of concrete and grout, pull‐off test bolts of rock anchors and other tests required by the Engineer to the Owner. Equipment, tools, equipment and skilled labor for carrying out the tests shall be furnished by the Contractor;

k. All work required to comply with environmental protection measures;

l. Necessary measures to prevent and control soil erosion sites pylons, when required;

m. Testing and acceptance of work completed;

n. The availability of operation manuals and maintenance;

o. And all other work required to complete the transmission line under the agreement.

In summary, the contractor is responsible for purchasing all materials and equipment required for

line, transportation, and construction to deliver to the customer lines completely operational point of departure to destination defined, all as required by the contract documents and the rules of art.

This file does not include the work of the section line to 330 kV within Ghana.

(Only works associated with telecommunications infrastructure within Ghana are

included in this project.)

3.2 Other

3.2.1 Norms and Standards

The latest edition or revision of all standards mentioned in the specifications should be applied.

3.2.2 Coordination

The Contractor shall be responsible for planning all phases of work, including coordinating the activities and operations of its suppliers and subcontractors.

The Contractor shall be responsible for coordinating the work of study and must ensure that all components of the transport system are compatible and fully comply with specifications to make their connection in terms of size and design loads.

In particular, the design of connections and fittings in a terminal structure or existing in the case where a pylon must be compatible with the existing connection point.

The Contractor shall coordinate with suppliers of materials and equipment so that the delivery of the equipment complies with the construction schedule.

3.2.3 Documentation

The Contractor shall prepare and submit for review by the engineer of the Client, all drawings and documents. The drawings shall be A1 size (841 x 594 mm), A3 (420 x 297 mm) or A4 (297 x 210 mm) and include the cartridge into the bottom right corner. Text documents must be in an A4 (297 x 210 mm).

The Contractor shall submit to the engineer to the Owner, no later than six (6) months after contract award, one (1) AutoCAD 2004 electronic file on a CD‐ROM, and four (4) Hard copies of each drawing. Copies corrected by the Engineer to the Owner will be returned to the Contractor within 60 days after the presentation of each item. The drawings will be corrected, if necessary, re‐submitted following the same procedure.

An AutoCAD 2004 updated, as well as six (6) copies of final drawings shall be submitted by the Contractor, by (1) month before delivery of the item concerned.

3.3 Deliverables

The following technical information will be required at the time of submission of its proposal by the Contractor:

Design drawings;

Control of work schedules;

Sheets completed;

Test reports available from suppliers (these are in addition to test reports during production);

Quality assurance program;

Brochures and catalogs.

The Contractor shall provide the following additional information before or during the period of production. The information required prior to manufacture will be identified by the engineer of the Client:

Schedule of drawings;

Assembly drawings, materials list, etc..;

Instruction manuals and use;

Reports and test certificates;

Factory test program;

Drawings and transportation and handling procedure, if required by the engineer of the Client;

Marking patterns, if required by the engineer of the Client;

List of tests required for approval;

Detailed guide for installation;

Detailed guide for the reception;

Fact control work;

Report on the progress of the manufacture on a weekly basis.

The Contractor is responsible for all disagreements, errors or omissions in the bidding or not revised by the engineer to the Owner.

All reports or drawings must be supplied in the international SI unit system.

3.3.1 Timing of control work

Within 15 days following the award of the contract, the Contractor shall submit to the engineer to the Owner a schedule of monitoring detailed work. The delivery schedule shall be consistent with the timing control of the engineer to the Owner. This schedule is Gantt type or another format previously approved by the Engineer to the Owner.

The schedule of work control must indicate for each section and subsection as given in the bordeaux prices, dates of commencement and completion for the major activities of work includes:

Study and presentation of design notes for revision;

Submission of drawings for review;

Submission of final drawings;

Placement of purchase orders;

Receipt of material;

Manufacture or production;

Instruction manuals;

Factory tests;

Shipping.

3.3.2 Progress Report

The Contractor shall submit to the engineer to the Owner a monthly report indicating the progress made progress during the previous period. The report must show progress in a cumulative table of completion, expressed as a percentage of all items shown in the schedule of control work.

3.3.3 Plot of the transmission line

The Contractor shall be responsible for selecting the final route of the line with the approval of the Engineer to the Owner. The survey of the land must be executed according to the chosen route of the line and without any change except after consent of the Engineer to the Owner. The Contractor may request the assistance of the engineer of the Employer in special cases.

The final statement of the route plans and profiles of the line are the total responsibility of the Contractor. The document 016742‐3000‐43ED‐A‐0001 part of this technical specification should not be used for construction; it is intended only to bidders to define the scope of work involved.

The Contractor shall make all records required to establish a line tangent line between the corner points.

Encroachment or adjacent features such as villages, buildings, roads, railways, waterways, fences, pipelines, power lines, etc. must be identified and annotated on a map.

The surveys and profile surveys aim to establish the coordinates and elevations of the axis of the line, all points and obstacles in the hallway (right) chosen, the elevation of all points’ reference and cross‐slopes of the ROW. The Contractor shall determine the minimum clearance of conductors through existing roads, railways, waterways, non‐navigable water surfaces, telecommunication lines, power lines, buildings and other obstructions along the route, based on the minimum vertical and horizontal clearances.

The records must also include the lateral recesses on each side of the route to ensure that the minimum distance specified for each structure is maintained.

All points raised will be provided as a list of points with topographic digital code compatible with PLS‐CADD software as a file or xyz pfl.

3.4 Access to the site

The Contractor shall be responsible for construction and maintenance of all necessary access for the realization of the line. The locations of these accesses, which must be submitted for approval of the Engineer to the Owner, must have a minimum impact on the environment. The surfaces of access roads must be leveled with a grader.

3.5 Manuals for operation and maintenance

The Contractor shall prepare operation manuals and maintenance complete, detailed and reliable data needed for the operation and maintenance of transmission lines.

In particular, the Contractor shall provide instructions for operation and maintenance for all components of the line including:

Foundations;

Pylons;

Drivers ‐ including sleeves and anchors;

Cable grounding ‐ including sleeves and anchors;

Insulators;

Line hardware;

Vibration dampers;

Spacer dampers;

Ground wire and fiber optic cable covered with Al ‐ including sleeves, anchors and junction boxes.

3.6 Quality control during the execution of works

The Contractor shall implement a program of quality control during the execution of works. This program is ISO 9001.

The program must be submitted to the Engineer to the Owner within 30 days of contract award for review and approval, shall address, among others, the following:

A.Q. flowchart;

Level of authority and competence of personnel quality control;

Control equipment;

Facilities for testing, tools and instruments;

Monitoring and inspection of each part installed in accordance with the drawings;

Report non‐compliance and corrective action;

Specifications for quality control;

Document Control to the site.

The Contractor shall maintain records of quality control on site (as a minimum requirement) may be reviewed by the engineer of the Client at any time:

Files with the forms of verification and test results for materials used for work. The various steps required inspection, defined for each work item, must be submitted for approval by the engineer of the Client;

Records report noncompliance (RNC): These reports will be news until satisfactory corrective measures have been applied. Periodic review reports RNC must be done with the Engineer to the Owner to evaluate the quality of work performed by the Contractor. The Contractor shall be closely monitoring all reports RNC;

Drawings "as built" the Contractor shall keep on site a copy update, each drawing with the remark "as built", available for inspection by the engineer to the Owner. All significant changes to the original drawings must be documented by an RNC for which the Contractor may be liable to provide explanations and justifications;

The annotated drawings will then be used by the Contractor to prepare drawings

"As built" final which will be delivered to the Engineer to the Owner upon completion;

The local representative of the Contractor shall be responsible for implementing the quality assurance program on site and keep records thereof;

At the end of work, the Contractor must submit all documentation relating to quality control to the engineer to the Owner. The work will not be considered completed and cannot be approved by the engineer of the Client until the required documentation has been received.

3.7 Safety Measures

The Contractor shall develop a safety program for its personnel in accordance with applicable regulations in the country and standards of the construction industry.

The Contractor shall designate an officer in charge of security who has training and experience, in addition to the equipment necessary to respond to emergencies. This agent has the authority to stop work at any time if it determines that the safety of staff is threatened or the method or equipment used to perform the work is prone to risk, and arrest any person who does not comply with safety rules.

3.7.1 Safety Plan

Within two months following the award of the contract, the Contractor shall submit a safety plan for review and approval of the Engineer to the Owner, among other things, the plan must cover the following:

Name of officer safety and evidence of adequate training;

Safety requirements for Contractor personnel and visitors;

Means for rapid transport of injured persons;

Hygiene at the work site (portable water supply, cleaning equipment, etc.).

Preventive measures against electric shock accidents;

First aid measures on site;

Access to a nearby hospital and clinic, at any time for an arrangement with a medical team at all times;

Provide staff with helmets, boots and goggles;

Work plan and protection in sensitive areas;

Plan of work and safety features of road traffic at crossings of roads and railways.

3.7.2 Prevention of accidents

All Contractor personnel shall be identified to control access to sites. The unidentified persons are not allowed to enter premises. Pieces of identification must be issued for the engineer to the Owner and its representatives.

Among others, the following measures must be introduced:

At least one worker in 30 must be trained to perform first aid and has a first aid kit appropriate;

Every worker responsible for operating the electrical equipment must be trained to turn off power and assist any worker electrocuted;

Workers must handle a reasonable load;

All tools should be provided with firm grip, with no loose parts or sharp edges;

All cutting tools should come with a proper handle, security lock and storage case;

The keys must have an adjustable length suitable to develop the required torque and avoid the use of an extension with a hose;

Manipulation of metallic conductors or near energized lines or bus bars of the substation should be avoided;

Ladders must be safe, preferably metal.

3.7.3 Work in areas under tension

When the work requires the modification or extension of an existing substation, where the workers will access areas under voltage switchyard, the Contractor by the person in charge, the engineer must submit to the Master of Analyst a detailed work plan in which the Contractor explains the method he will use to perform each operation. The engineer of the project owner will coordinate with the operator's position to obtain the permit so that the Contractor may enter the area and, when necessary, to the relevant sections off. Work on live parts is strictly prohibited.

The person in charge will be accredited by the operator and engineer of the post and remain their sole contact and valid until completion of the work. This person will have the authority to stop work in the case of non‐compliance of work in power stations and will be responsible for implementation of all measures of labor, health and safety of planned and approved by Engineer to the Owner and operator of the station.

The Contractor shall be responsible to implement safety measures when working in an energized environment. These measures must include the use of temporary barriers with locks, warning signs, tools, grounding, color band to limit the area, etc.

These measures must be in agreement with the Engineer to the Owner and operator of the substation.

The detailed plan of work must give at least the following information:

Safety rules:

‐ Identification of each individual point in the area;

‐ Request for temporary shutdown of equipment;

‐ Preparation of the protected area;

‐ Decommissioning of equipment (with the installation of barriers, locks, signs, etc.).

‐ List of personnel authorized to work in the power station equipped with temporary permits;

‐ Definition of safe work area (inform all participants of all security measures, identification of hazardous locations, etc.).

‐ Direction to staff;

‐ Ensure continued presence of a person in charge of the work;

‐ Instructions for the interruption of work, if required;

‐ Essay on the work completed in the protected area;

‐ The end and the start of the work area;

‐ Dismantling of protective measures;

‐ Notice of Completion;

Work rules (authorizations, personal protection, operator interface);

Staff training;

Control of the safety equipment.

Table 3‐1: Table of project coordination Ghana‐Togo‐Benin

No

Description of work

contractorpost

contractorline

contractorTelecoms

Observations

1 Room set of telecommunications

i t

2 Telecom room energy (batteries)

Ward than positions as telecommunications equipment are rescued by same batteries as those of positions.

3 Ground positions of buildings and rooms telecom

The wells which will be connected to earth telecommunications equipment should have a resistance of max 7! in dry season

4 Installation of copper plates of grounding in theaters

5 Connecting to the plates of telecom equipment grounding

4 Installing cable power line 5 Installation of fiber optic cable

(FO)

6 Installing the terminator FO equipped with panels connection with ST adapters in the room of Telecom site

See the location on the drawing of station building

7 Termination of the fibers in the housing and fiber test FO

Measurement results to be submitted to Owner or his representative

8 Construction of chamber coiling the cable entry positions in buildings

9 Booking ducts admissions in cinemas

10 Reservation of cable ducts in the rooms

11 Accessories and hardware facilities for telecommunications equipment (cable tray, clamps, copper patch cords or FO cable primer, moldings ...)

12 Supply and erection of towers for Telecoms

13 Installation of surge arresters on towers Telecoms

14 Installation of beacons on towers

Between sites and countries, it is imperative to install beacons atop the towers from a certain height

15 Well grounded and grounding of equipment installed on the pylon

It is imperative to ensure equipotential earth connection on the same site

Table 3‐2: Coordination table position

No Description of work contractorpost

contractorline

contractor Telecoms

observations

1

Installation and commissioning of indoor and outdoor lighting positions

2 Distribution and electrical wiring

3 Assembly, installation, testing and commissioning of station equipment (power transformers, circuit breakers, see section 2) and associated wiring

4 Installation, testing and commissioning of AC 400/230V distribution panel and associated wiring

5 Installation of the switchboard in DC 125 V and associated wiring

6 Installation, testing and commissioning of the storage batteries 125Vdc

7 Installation, testing and commissioning of battery chargers redundant DC to 125 V and associated wiring

8 Installation, testing and commissioning of battery chargers redundant Installation testing and commissioning of cabinets disconnectors fuses (panels disconnecting batteries) and associated wiring DC 125 V and associated wiring

9 Assembly, installation, testing and commissioning of SCADA equipment and associated wiring

10 Connecting the SCADA network to the backbone

11 Installation of control cables and low voltage power

12 Installation, testing and commissioning of inverter generator and associated wiring

13 Installation, testing and commissioning of control panels, metering and protection

14 Connecting terminals (RTU) in SCADA network

15 Testing and commissioning and testing of the entire network with systems: SCADA, supervisory control and protection

16 Cleaning and maintenance of the site during and after construction

17 Coordination for compatibility and proper operation of equipment at all sites involved in this project in the network of the CEB

18 Further coordination to be specified by the Engineer Client

4 DESIGN CRITERIA ‐ 330 KV LINES

4.1 General

The Contractor shall provide all materials, facilities and equipment necessary construction and transportation, labor and all other services and resources required to perform the work including:

Tower foundations;

pylons;

drivers;

Shield wire to fiber optics;

Guard cable made of strands of steel coated with aluminum;

insulators;

The design and manufacture of all materials and hardware drivers, OPGW and overhead ground wires, including suspension assemblies, sets of tension, brace assembly, junction sleeves, bars repair, vibration dampers, shock absorbers for gauge;

Strengthened copper cable and associated connectors for grounding;

Number plates, signs and warning signs;

Other materials and work necessary to complete the transmission line and operate in accordance with contract requirements.

The quality of design and manufacturing of all materials, components and fittings must conform to standard specifications, recognized and accepted in practice and supported by test certificates where applicable.

4.2 Clearances

vertical clearances

The vertical clearance for drivers based on their final arrows (after creep) and their maximum temperatures in air of 75 ° C shall be:

Clearance to land m

At the earth in general 8.0

Main road 9.0

Railways 10.0

Ways unnavigable 15.0

Release of cross m

Lines 115 to 380 kV 6.50

telecommunication lines 4.60

Distribution lines 4.60

Or according to local regulations.

horizontal clearances

The minimum distances are listed below:

Horizontal clearance of conductor from obstacles for deviations in the driver's average temperature and maximum wind: m

highways 35.00

Railways 40.00

Country Roads 30.00

Country roads, land and rural 20.00

channels 20.00

buildings 40.00

Transmission lines and distribution of less than 161 kV 25.00

aqueducts 100.00

As for the towers, clearances are: m

Between conductor and tower steel

‐ Pressure turbine 78 Pa at 28 ° C 2.60

‐ 50% of maximum winds at 28 C 1.65

‐ Wind up to 28 ° C 0.6

Minimum vertical distance between conductor and shield wire pylon 4.0

Minimum horizontal distance between two phases 11.0

Angle cable protection cover 20 °

At 28 ° C, whatever the scope, the arrow of the shield wire (CDG) and the OPGW must be between 10% and 20% below the arrow line conductor while respecting the limits in tension the shield wire and OPGW.

4.3 Conditions climate

Climatic conditions to consider when designing transmission lines are:

Minimum ambient temperature 12 ° C

Average daily temperature 28 ° C

Maximum ambient temperature 42 ° C

Reduced wind speed (km / h) 58

VM maximum wind speed (km / h) 115

VR is the speed of the wind * VM = KR where KR = 1.00 approximate value (see Clause 3 of

IEC 60826).

4.4 Pollution

As stipulated in the standard BEC lines:

Except on the seafront on a saline pollution, are not encountered major problems of pollution other than the dust of sand and laterite especially during Harmatan.

We adopt the following pollution levels that refer to IEC Recommendation 815:

The area between the sea and 50 km inland is viewed with a high level of pollution which is a minimum creepage distance of 25 mm / kV.

Areas beyond 50 km from the sea are considered with a medium level of pollution which is a minimum creepage distance of 20 mm / kV.

Follows the recommendations of the IEC, the level of pollution along the line 330 kV Ghana‐Togo ‐ Benin is located within 50 km of the sea is considered high, therefore all materials must be designed accordingly.

4.5 Voltage limits for drivers

Drivers must not exceed the voltage limits:

The final voltage on windless bare conductor at 28 ° C above normal ground, must not exceed 20% of the nominal resistance in tension;

The final voltage on windless bare conductor at 28 C, over a stretch of water, must not exceed 18% of the nominal resistance in tension;

The initial tension without wind on bare conductor at a minimum temperature (12 ° C) must not exceed 30% of the nominal resistance in tension;

The final voltage with a maximum wind on bare conductor at 28 ° C must not exceed 50%

of the nominal resistance to traction.

Tension limits for ground wire will be the same, with the additional condition that the final deflection no wind at 28 ° C must not exceed 80% of the sag of conductor under the same conditions.

In addition to the limitations mentioned above, the vibration limits recommended in the brochure

CIGRE No. 273 will be considered.

4.6 The factors of strength and safety

Resistance factors, safety and overload for the design of the tower, if any, should be as in clause 12 of this document.

Safety factors for foundation design are given in clause 13 of this document.

Based on the minimum breaking load isolators, size and strength of mechanical components must have a safety factor of 2.5 under the loading conditions the most unfavorable. All connections must be at least the same mechanical strength as the insulator.

5 STANDARDS, STANDARDS AND CODES 330 KV

The precedence of standards, codes and standards to be followed shall be as follows:

General technical specifications;

Standard Lines of CEB in May 2004, for all standards that apply to 330 kV;

International standards (ISO or IEC);

ASTM, ACI, ASCE whether ISO or IEC standards are not available;

BS standard if the ISO or IEC, ASTM, ACI, ASCE or are unavailable. When the equipment is specified for a particular standard, the Contractor may provide equipment

Standard equivalent, if approved by the engineer of the Master. If the application of the equipment is not consistent with the scope of norms, standards and codes listed above, such equipment must be provided in accordance with best practice engineering, with appropriate the service required and approved by the Engineer to the Owner. Moreover, in case of conflict between this specification and any other code, standard, above the order must be followed.

The Contractor may propose substitutes codes and standards, provided it is demonstrated in a written request to the engineer of the project owner that they lead to a level of quality and reliability equivalent to codes and standards reference. Acceptance of any code or standard replacement must be approved by the engineer of the Client and is not guaranteed if IEC or ISO standards adequately cover the same subject.

6 DRIVER 330 KV

6.1 General

This specification covers the detailed requirements for the design, manufacture, test and delivery of stranded conductor aluminum‐steel A1/S1A IEC 61089 (ACSR).

The driver covered by this specification must be suitable for normal installation or turned loose. Any driver who, when properly conducted, has a "deformation cart" or strands damaged during the peeling must be rejected.

6.2 Standards

The materials covered in this specification shall conform to the following standards and codes, unless otherwise indicated:

IEC 60888 coated steel wires for stranded conductors

IEC 60889 Hard‐drawn aluminum wire for overhead line conductors

IEC 61089 Conductors for overhead electrical stranded Round wire concentric lay

IEC 61394 data protection products for bare aluminum conductors, aluminum alloy or steel

6.3 Characteristics of the driver

The driver must be provided a driver consists of a bundle of two aluminum steel cables (ACSR) and will conform to IEC‐61089 with the following characteristics:

430,4 mm2

27.8 mm2

402.6 mm2

403-A1/S1A-45/7

TERN-ACSR

27.0 mm

Acier 7x 2.25 mm

Aluminium 45 x 3.38 mm

1338.9 kg/m

98.2 kN

6.4 Information required in accordance with IEC 61089

The following information is specific to this contract and specify the requirements for drivers of this project in accordance with IEC‐61089. All other requirements or tests not specifically mentioned in the following table will be made in accordance with IEC 61089.

Disclosures required by IEC 61089 Specific requirements for this contract

a) Number of drivers Responsibility of the contractor who will define it according to the length of the line

b) Cross section, designation and wiring of the driver

See subsequent clauses

c) driver by drum length, and tolerance, if any, matching lengths


d) Type and size of packaging and packing method;


e) Special requirements for packing, if necessary;


f) requirements douvage (lagging), if necessary;


g) If monitoring is required and locus of control; Yes, the locations of manufacture Yes, upon receipt at the site

h) If the tests on son after wiring is required; not

i) If testing of tensile strength is required; yes

j) If tests stress / strain are required; yes

k) Meaning of wiring. If this information is not, the wiring direction of the outer layer will be right;

Right outer layer

l) Requirements for fat, if necessary (type, properties, etc..).

Lubrication required for the steel core, including the outer layer of the soul (according to IEC 61394 ed1.0 dated 2011-10-12), preferably the type A, low temperature 0 ° C and 150 ° C high temperature

6.5 Manufacture

The manufacture and deployment of the cable must conform to IEC 61089et finish must have high quality materials, workmanship and design in accordance with modern manufacturing practices conductor transmission line.

The stress‐strain characteristics of drivers in harness should be virtually invariant to maintain uniformity of the arrow in the cores and prevent distortion of the beam differential drivers which lead to a rotation of spacer dampers. The cable manufacturer should observe the following:

The manufacturing method of the conductors must be the same for this project and the source ingots or aluminum bars to obtain an almost uniform quality after fabrication;

The propeller pitch stranding of all layers of the conductor must be maintained;

The variation in the ratio of deployment (helical pitch) should not be more than ± 5% of any layer of 12 or more strands and not more than ± 10% in the layers of 6 strands;

The mechanical properties of all cables should be very similar. All aluminum cable should, wherever possible, be drawn on the same machine and at the same speed;

Reels or drums should be numbered to make it possible to identify which machine was the driver stranded. The drums should be numbered consecutively as and when the driver leaves the stranding machine, so that drivers fit together as possible.

6.6 Testing

All conductors manufactured in accordance with this specification are subject to inspection by the engineer to the Owner.

The Contractor shall give the engineer the project owner a notice of at least 15 days before the start of production of the driver to allow it or its representative the time to attend to all tests applicable in the context of this project.

The Contractor shall submit two (2) copies at no additional cost for each order placed with suppliers or subcontractors. Each of these purchase orders shall bear the following notes on the cover of the order. "This order is subject to inspection and shipment by the engineer of the project owner or its authorized representative"

The Contractor shall perform the required tests at no additional cost.

No matter if the engineer to the Owner is present or not, the Contractor shall perform all tests specified in the appropriate standards and shall provide the engineer of the Client data obtained from all three trials (3) copies.

6.7 Marking

The following information must be clearly marked in indelible paint on each side of the reel driver in French and English:

Model and name of the driver;

Conductor size;

Exact length in meters;

Stranding;

Net weight in kg;

Gross weight in kg;

Arrow pointing the right direction for the bearing (which is the opposite of the direction of flow) with the instruction "ROLL IN THIS DIRECTION";

Instruction "DO NOT ASK FLAT";

Reel no;

Manufacturer's name and country of origin;

Year of manufacture;

Purchase order number;

Name and address of the purchaser;

Delivery destination;

Destination warehouse / yard.

In addition, each end of the conductor on a reel must have a label indicating non‐corrosive, in French and English, the first five items listed above.

6.8 Packing

The packing methods and packing are the responsibility of the Contractor. Drawings and procedures describing the package must be submitted to the Engineer to the Owner for approval. The engineer of the Contracting Authority reserves the right to inspect the equipment and its packaging before delivery. Packing lists must also be available for inspection by the Engineer to the Owner.

The requirements described below must be met to ensure that the equipment is capable of withstanding, without damage or deterioration, land transport and maritime operations and maneuvering, loading and unloading until it reaches its destination.

6.8.1 Reels

The driver should be supplied in collated sets of eight in standard nominal lengths on reels of wood or steel non‐returnable. The reel must be designed for operations with normal tension peeling.

The drums reels of conductor must be wrapped with a protective coating resistant to mildew. The interior sides of the drums should be covered with wood fiber panels resistant to mold.

The two outer layers must be overlaid and the outer layer must be covered with paper mildew resistant. A protective envelope of a single layer of wood fiber panel mildew resistant, secured with steel bands, everything must be packed.

The drums shall be constructed to support normal loads caused by the unwinding operations and must be robust enough to support additional maneuvers for normal delivery shipping.

The drums should be closed with wooden slats, all secured with two steel bands. The steel bands are to be stapled to the wooden slats at intervals.

The Contractor shall submit drawings of reels to the engineer to the Owner for approval.

6.9 Deliverables

6.9.1 Deliverables required with the submission

Deliverables required with the submission include:

a. Sheets of guaranteed specifications attached to this specification for each type of driver offered;

b. The quality assurance program of the manufacturer and / or manual with a list of international standards / national specifications covering raw materials, components, processes, tolerances, test procedures, etc.., And a list of tests normally carried out on raw materials and description of test equipment used;

c. Grease type and application method;

d. A short description of manufacturing processes and equipment used in the production of the driver;

e. A complete list of routines and test samples made during and after manufacture, and a description of test equipment used;

f. A complete list of all the type tests performed and all relevant data confirming the results;

g. Detailed drawings of each type of drum that is used for packaging of drivers including hardware component and method of manufacture;

h. A list of existing transmission lines equipped with drivers and proposed dates of commissioning of these lines.

6.9.2 Deliverables required after contract award

The required deliverables following the award of the contract are four (4) copies of each:

a. Details of the manufacture, testing and delivery schedules and proposals for transport / delivery;

b. Certificates covering the raw materials used in the manufacture of drivers;

c. Certificates covering the routine tests performed on the cables before the stranding of conductors;

d. Certificates covering the routine tests performed on the cables after the stranding and type tests on the driver before delivery;

e. Curves stress / strain for all types of conductor to be provided;

f. Curve giving the coefficient of elasticity at 0 C, 75 ° C and 105 ° C;

g. Coefficient of linear expansion;

h. Temperature curve of the driver, pointing out that:

‐ Normal operating maximum permitted without annealing of the conductor;

‐ Normal operating maximum permitted, and the number of hours allowed to temperature without exceeding a 10% loss of voltage of the driver during his lifetime.

i. Creep curves versus the load as a function of time;

j. By giving a list reel, reel number, the conductor size, the exact length, net weight, gross weight, the number of joints made during the stranding and their distances from the ends.

7 CABLE GUARD STEEL ALUMINUM CLAD 330 KV

7.1 General

This specification covers the detailed requirements for the design, manufacture, testing and delivery of the shield wire of steel with aluminum strands concentrated.

It is expected that the shield wire covered in this specification must be suitable for installation with normal tension or tension loose. All cable guard who, when stranded itself, presents a "deformation cart" or strands damaged during the peeling must be rejected.

7.2 Standards

The materials covered in this specification shall conform to the following standards and codes, unless the engineer approves of the Client other:

IEC 61089

And Amendment 1 dated 1997‐1905

Conductors for overhead electrical stranded Round wire concentric lay

Son of steel coated with aluminum for electrical purposes

7.3 Characteristics of the shield wire

The cable is coated steel strands concentrated aluminum (type according to IEC 61089 SA1a with Amendment No. 1 dated 1997‐1905 and must have characteristics consistent with the following requirements:

Description units general Type

designation

Basicstandard

Mechanical properties and

dimensions

Number of son

Wire diameter diameter outside section total mass Tensile Modulus of elasticity D.c. resistance at 20 C

‐

‐

‐

‐ mm mm

mm2

kg/km kN

MPa

ohms/km

‐ SA1a (steel coated with aluminum)

Acier recouvert d’aluminium (Alumoweld)

IEC 61232 and IEC son for 61089 with Amendment No. 1 dated 1997‐05 to complete the shield wire

7

3,27

9,8

5

7.4 Information required in accordance with IEC 61089 The following information is specific to this contract and specify the requirements for drivers of this project in accordance with IEC‐61089. All other requirements or tests not specifically mentioned in the following table will be made in accordance with IEC 61089.

Disclosures required by IEC 61089 Specific requirements for this contract

7.5 Testing and Reporting

All ground wires manufactured according to this specification shall be subject to inspection by the Engineer to the Owner.


The Contractor shall submit two (2) copies at no additional cost for each order placed with suppliers or subcontractors. Each of these purchase orders shall bear the following notes on the cover of the order.

"This order is subject to inspection and shipment by the engineer of the project owner or its authorized representative"

Test procedures not covered by the contract shall conform to the standards listed above;

The Contractor shall perform the required tests at no additional cost. These tests shall be assisted by the engineer of the Client;

No matter if the engineer to the Owner is present or not, the Contractor shall perform all tests specified by the standards appropriate and shall provide the engineer of the Client data obtained from all three trials (3) copies.

7.5.1 Reports

The Contractor shall give the Engineer to the Owner three (3) copies of certificates showing that all required tests were performed and the materials and workmanship conform to specified requirements. No deliveries of cable guard shall be made on site prior approval by the engineer to the Owner test certificates relating to the total amount of reels in every detail of delivery.

7.6 Marking

The following information must be clearly marked with indelible paint on each side of the reel driver in French and English:

Type and name of the driver;

Conductor size;


Serial number and minimum tensile strength;

stranding;

Net weight in kg;

Gross weig



Reel no;



Purchase order number, name and address of the purchaser;


Destination warehouse / yard

In addition, each end of the shield wire on a reel must have a label indicating non‐corrosive, in French and English, the first five items listed above.

7.7 Packing


The requirements described below must be met to ensure that the equipment is capable of withstanding, without damage or deterioration, land transport and maritime operations and maneuvering, loading and unloading until it has reached its final destination.

7.7.1 Reels

The ground wire must be delivered in standard nominal lengths on reels of wood or steel, non‐returnable. The reel must be designed for operations with normal tension peeling.

The drums reels of conductor must be wrapped with a protective coating resistant to mildew. The interior sides of the drums should be covered with wood fiber panels resistant to mold.

The two outer layers of the shield wire must be superimposed and the outer layer must be covered with paper mildew resistant. A protective envelope of a single layer of wood fiber panel mildew resistant, secured with steel bands, everything must be packed.


The drums should be closed with wooden slats, all secured with two steel bands. The steel bands are to be stapled to the wooden slats at intervals.


7.8 Deliverables



Sheets of guaranteed specifications attached to this specification for each type of cable guard proposed;

The quality assurance program of the manufacturer and / or manual with a list of international standards / national specifications covering raw materials, components, processes, tolerances, test procedures, etc.., And a list of tests normally carried out on raw materials and description of test equipment used;

A short description of manufacturing processes and equipment used in the production of the cable guard;

A complete list of routine tests performed during and after manufacture and description of test equipment used;

A complete list of all the type tests performed, and all relevant data confirming the results;

Detailed drawings of each type of drum that is used for wrapping the cable guard including hardware component and method of manufacture;

A list of existing transmission lines equipped with overhead ground wires and proposed dates of commissioning of these lines.



Details of the manufacture, testing and delivery schedules and proposals for transport / delivery;

Certificates covering the raw materials used in the manufacture of the cable guard;

Certificates covering the routine tests performed on the son before the stranding of the shield wires;

Certificates covering the routine tests performed on the shield wires complete before delivery;

Curves stress / strain for all types of cable guard to be provided;

Curve giving the coefficient of elasticity at 0 ° C, 75 ° C and 105 ° C;

Coefficient of linear expansion;

By giving a list reel, reel number, size of the shield wire, the exact length, net weight, gross weight, the number of joints made during the stranding and their distances from the ends;

Temperature curves short‐circuit of the shield wire versus time.

8 AIR GUARD CABLE FIBER OPTIC AND ACCESSORIES 330 KV

8.1 General

This specification addresses the minimum technical requirements for the design, manufacture, supply, installation, testing and report writing of measures of the shield wire aerial optical fiber (OPGW) and hardware (connectors) for use as a shield wire for overhead transmission lines.

Each fiber must be terminated at an optical terminal for the type of single mode fiber.

The color code optical fibers must meet the standard TIA/EIA‐598‐A. Supplier responsibility to comply with the requirements of this specification.

Any change in service or supply not meeting the requirements of this technical specification must be submitted for approval by the owner or his agent or representative.

8.2 Standards

The materials covered in this specification shall conform to the following standards:

IEC 60794‐4 Optical fiber cables ‐ Part 4 Section A2: specification ‐ Aerial optical cables along electrical power lines

IEEE 1138 Construction of composite fiber optic overhead ground wire (OPGW) for use in electric utility power lines

TIA / EIA Electronics Industries Association

IEC International Electrotechnical Commission

IEEE Institute of Electrical and Electronics Engineers ISO International Standards Organization NEC National Electric Code Articles

NFPA 262 Flame Travel and Smoke of Wires and Cables, for Use in Air Handling Spaces

NFPA 502 National Fire Protection Association

NFPA 70 National Fire Protection Association

Unless otherwise noted, all supplies or assemblies must be documented by the manufacturers meet the requirements of different standards. All materials must be new, consistent with applicable standards.

In the event of contradictions or discrepancies between the requirements of standards referenced above, the clause is the more stringent of the two standards will be applied.

For installation, all materials, structures and working methods must comply with building codes and safety of local, national, regional, regulatory authorities having jurisdiction over the work, and codes and standards listed below. In case of conflict between the regulations of competent authorities, the most stringent requirements govern.

Governed only the most recent edition of the codes and standards, including the addenda, supplements and revisions in effect when the award of the Contract.

Governed only the most recent edition of the codes and standards, including the addenda, supplements and revisions in effect when the award of the Contract.

8.3 Characteristics of the shield wire to optical fibers (OPGW)

Single mode optical fiber of the graded index should be used.

The optical fibers installed must meet or exceed the following performance specifications.

Description units fiber

number

model

Attenuation at 1550 mm

Attenuation at 1310 mm splices

Maximum loss at splices

Average loss at splices Diameter of the heart

‐

‐

db/km db/km

dB

dB

µm

‐

24

G.655 single mode fiber

0.19

0.30

0.15

0.08

equal to or less than 10

The OPGW must be capable of supporting a short‐circuit capacity of 20 kA for

0.3 sec and a shock from lightning of 200 kA without any change in its characteristics.

8.4 Manufacture

Cables installed outdoors must be approved for operation at temperatures up to 70 ° C.

For conduits, cables, tubes free (loose tube) with gel‐free and simple armor jacket must be used.

For direct burial, cable tube free (loose tube) with a simple jacket and armor should be used for direct burial. Unless otherwise specified, the cables must contain frames and core dielectric armor.

For aerial installation of fiber optic cables to pipes freezing and completely free no dielectric must be used. The outer envelope of these cables must be made of medium density polyethylene (MDPE) and contain an additive (such as carbon black) to increase the resistance to UV rays.

The fibers must be monomode and managed in units of optical fibers. They should be well padded to protect and identify with a color code.

The spacer must include an aluminum rod containing helical slots. Each optical fiber unit should be placed in a slot. The cable must have an aluminum tube tightly around the spacer. It should be seamless.

The steel cables covered with aluminum and aluminum alloy must be stranded around the aluminum tube to provide the necessary strength and conductivity, with mechanical protection of the fibers. The son of steel with aluminum must meet the requirements of IEC 61232 and must have a minimum conductivity of 20% IACS. The son of an aluminum alloy must meet the requirements of IEC 60104.

The connection of the optical fibers must be by fusion. The number of connections by fusion must be kept to a minimum.

8.5 Installation of FO

When handling, storage and installation of fiber optic cables, necessary precautions must be taken to avoid damaging the optical fiber and cable sheaths. In any case, the cable drums should:

Be stored on its side;

Fall off during handling;

Be moved using equipment that come into direct contact with the cable;

Be held and left unattended for an extended period.

If the cable is to be held on the ground, it must be deployed in the form of "eight" while maintaining the minimum bend radius. To avoid any risk, place the cable must be based on a distance of 10 meters, with two loops of two meters in diameter minimum. It should never be held in a circle except for lengths up to 30 meters. Cables should be installed according to manufacturer's recommendations respecting the maximum pulling tensions, the minimum radii of curvature, the method of attachment of the line drawing, the temperature of installation and any other stresses, mechanical or environmental. Unless otherwise specified by the manufacturer, the maximum pulling tension used for fiber optic cables shall be 150 kg. During the drawing of optical fiber cables, the frames of forces must bear all or most of the pulling force.

Cable pulling should be done by hand unless a blood pressure monitor, a control voltage or a swivel with a mechanical fuse is used. When a drawing is used to install attended a fiber optic cable, a device for measuring the voltage with a swivel or mechanical fuse must be used.

To facilitate cable pulling, a lubricant suitable cable must be used, especially at the entrances to draw well and where the shift cable is difficult. In places where the tensions pulling may reach very high values, due to the presence of curvature, existing cables in ducts or conduits upward, special attention is required to cover the entire lubricating the surface of the sheath from one end to the other of the cable.

A loop of five (5) meters on each optical fiber cables must be left inside a cabinet connections or equipment housing.

Of coil loops must be provided at both ends of the cable. Also, the cable loops (called service loops) must be left to draw all intermediate points such as manholes and boxes of prints and all the places where future connections can be expected. The radius of curvature should not be less than 10 times the outer diameter of the cable in the case of a static bending (cable in place) and 20 times during a dynamic curvature (rotating cable).

All optical fiber cables have maximum height of vertical ascent which is a function of their weight and their long‐term resistance to tensile forces. This height is the maximum vertical distance between the points of intermediate supports. All cables installed vertically must be attached to the top of the route and at frequent intervals according to manufacturer's specifications. And that, to prevent excessive strain on the cable jacket. The attachment point should be carefully chosen to meet the minimum bend radius of the cable while holding it firmly. Ties meshed split (split mesh grip) should be used to fix the optical fiber cables installed vertically. When possible, the cables should be installed vertically from top to bottom rather than pulling the bottom up.

All straps or supports used with optical fiber cables must be sufficiently tight to maintain the cables firmly without deforming the latter. The tie wraps should not be too tight and free tongue should be cut to avoid excessive tightening. Rounded or padded supports are preferable to the supports on sharp edges.

When possible, the optical fiber cables must be continuous and without fusion between the connection points. Otherwise, the series splices must be limited by respect the maximum attenuation allowed by the equipment.

The cable ends are not connected must be protected against the ingress of water or moisture penetration, either by a cap sealing heat shrink or other methods recommended by the manufacturer.

At all locations where external splices are made, enough cables must be provided to meet the truck terminal five (5) meters.

8.5.1 Installation of fiber optic conduits

Before a cable is pulled into a conduit, the conduit must be free of obstructions. If in doubt, in conduits unoccupied, a mandrel test must be drawn.

8.5.2 Installation in conduits not yet occupied

The poses can be conducted using several methods: by carrying air, water or traditional print. In all cases, it is essential to meet the following conditions:

Do not exceed the maximum allowable tensile stress indicated in the technical specifications of cables;

Ensure that: 1.3 x cable Ø <Ø Conduct internal <2.5 x cable diameter;

In the case of particularly difficult course, it is recommended to use pipes as large as possible (within the limits described above) and to use one of two (or two simultaneously) following alternative techniques:

‐ Preferably two machines use of cascade port (one at one end, and a second mid‐term;

‐ Failing to conduct poses a double starting with a midpoint of the course by making a coiling through the cable into a device.

8.5.3 Installation in ducts already occupied

Access cables of smaller voluntary and more flexible than standard cables should never be installed directly in a pipe occupied by another cable: you must first "sub‐tuber" the existing pipe while respecting conditions cited above;

The standard cables can be installed directly in a pipe occupied by another cable taking the following precautions:

‐ Porting the air: the internal diameter free DL must be between 2 and 4 times the diameter of the cable to be laid in the conduct engaged;

‐ Traditional print: free internal diameter of the pipe at least 2.5 times the outer diameter of the cable, but no upper limit.

To protect the cable from a cable guide with a radius of curvature for the type of cable must be placed at each end of the conduit. An employee must be posted at each end to observe the operation. Another person, mailed to the drum, monitors the progress of the cable. The cable must always proceed from the top of the drum, a regular and uniform, at a continuous speed (0.5 meters per second maximum).

In the event a cable is pulled in a massive lead, a swivel ball bearing and a mechanical fuse must be connected to the eyelet pulling the cable. If any of these parts breaks in the draw, he must replace it by following the procedure recommended by the manufacturer. An exception to this requirement may be made only for very short trips that require very low pulling force.

In pipes of large dimensions, more cables can be drawn at the same time as the pulling tension does not exceed the voltage limit specified for the cable and the filling ratio of the conduit is not exceeded.

If prints are possible future cables in conduit, internal conduits should be used to separate the space available. Particular attention should be paid to the ducts are as straight as possible, and without twist that could increase the tension of wire pulling.

Drawing boxes must be installed at intervals recommended by the Electrical Code and the rules of art.

When a fiber optic cable is installed in a concrete, cable tracer must be installed in conduit parallel.

8.5.3.1 Drawing Room

This is an intermediate chamber that can pull the cable away usually on tortuous paths. It makes no coiling or installation of equipment in this room except for force majeure. Technical Chamber

It is larger than a drawing room, as it is used to stow the cable provided, install sleeves splice or junction box.

8.5.3.2 Lovage in technical rooms and labeling cables

The length of the soft (cable provided) must be calculated to compensate for the unexpected (1% for outdoor installations and 5‐7% for domestic installations) and taking into account the depth of the room (possibility to leave the sleeve to to the splice to the outside of the chamber) and the length of the fiber to be wound into the cassette of the sleeve (1.5 m to 2.0 m);

The soft must be coiled in'' 8'' in accordance with the radii of curvature and then set to mature in the room;

The loves must be protected against external force that may damage the cable;

Each cable must be labeled, giving information on its origins and its ends if necessary, to the network to which it belongs.

8.5.4 Direct Burial

The fiber optic cables must be buried at least 0.9 m from the soil surface.

The warning mesh or a detectable cable shall be provided and installed 0.3 m above the fiber optic cables.

8.5.5 Air

When possible, the method of moving drum should be preferred to the method of drum sets.

For installations using a wire support helix, helix wire used to attach the fiber optic cable to the cable carrier must be of appropriate size to hold the cable without damaging it (too small a wire helix cause dips in the cable ). When installing two propellers son is required, the son must be loaded on both sides of the installation equipment. The thread tension propeller must comply with manufacturer's fiber optic cable.

A cable storage medium to be used for the service loops and end.

8.5.6 Cable rack

The optical fiber cables installed in cable shelves must be arranged orderly. Care must be taken to avoid crossing that could lead to cable bending radii below the minimum acceptable. The fiber optic cables must be fixed at regular intervals.

8.5.7 Other

The optical fiber cables should always be properly supported. Ceiling tiles should never be used to support fiber optic cables.

The cables should be installed above sprinkler systems and should never be attached to mechanical equipment, ducts, boxes, etc. ..

8.5.8 Splices, joints and terminations.

The splice plates on the mergers should be enclosed in cassettes that are stored in sealed boxes called sleeves.

The Works of fusion splice fibers and fibers primer must be made on the turntables fusion as recommended by the manufacturer and in accordance with the instructions for assembling it. A minimum radius of curvature of 50 mm must be observed for fibers and fiber boot.

For each of the amalgamations, the following must be met:

Check the adjustment of time and level of preparation and melting on his machine to mergers;

Check operation of the machine M;

Check that the cutting of the fiber is straight and that the edge is less than an inclination of a slope of 1;

To align the fibers using the PAS alignment technique (alignment system profiles) or technical equivalent or greater;

Once deemed acceptable, each merger must be protected with a protective sleeve shrink. The fibers merged, and mergers must be labeled;

The signal of such equipment must be restored before the Works; event of a malfunction, an intervention must be initiated to restore the signal for use.

Any merger must be corrected unacceptable.

The fusion splice are preferred over mechanical splices for connection. The mechanical splice connection must be used in multimode fibers when a fusion splice is not possible.

Each cable should be terminated in a patch panel enclosure called patch panels. The fibers of the same tube must be combined on the same plate melting and / or the same connection panel section.

No connection should be made directly to the equipment.

8.5.9 Patch Cords

All patch cords must be factory made, measuring at least three (3)

meters long and have an outer shell of 2.9 mm. No cord produced locally will be accepted.

The connection cords must be designed with connectors compatible with the equipment and installation. The type of optical fiber used for the connecting cords should be the same as that of the optical fibers on termination connectors.

05/08/10 terminating cables

All boxes optical connections must be large enough to wrap the excess cable required.

The optical junction boxes must have the ability to install the plates melting and patch panels and an additional space for the fibers left in reserve. Sufficient space must be provided in the kit to install the termination connectors.

The ability of fusion plates must never be exceeded.

8.5.10.1 Installing cabinets connections

In the halls of communication, connection boxes must be of type to be installed in a rack (rackmount).

In the limited space, clean, dry environment, the boxes for wall connections should be used.

In the humid and dusty boxes of papers must be designed for wall mounting and classified according to the installation location.

Outside, communications enclosures must be designed for wall mounting and rated for outdoor installation (weather resistant natural environment).

8.5.10.2 Connectors

Unless otherwise stated, the ST‐type connectors are preferred.

8.5.10.2.1 Identification System

All equipment, connectors, panels, connections, boxes of optical connections, equipment housings, equipment racks and other equipment, must be identified using platelets or equivalent waterproof and indelible. For equipment installed outdoors, the identification must be mechanically fastened. The identification must match the identification of equipment according to the drawings.

All patch cords must be identified using rings vinyl waterproof and indelible or equivalent. The identification must match the identification of equipment according to the drawings.

All cables must be identified with appropriate labels waterproof and indelible. This identification must be made at each end of the cables as well as whenever they pass through a ballot box, a manhole or box connections.

Each of the fibers of each of the cables installed must also be identified, using a color label numbered, before it enters the plate mergers. In addition, a label must be attached to the fibers of primer (pigtail), bearing the same identification as the interconnect cords.

The materials used for the labeling must securely attach the cables and markings must be resistant to removal and deletion.

8.6 Testing and Reporting

All OPGW manufactured under this specification shall be subject to inspection by the Engineer to the Owner.


The Contractor shall give the engineer the project owner a notice of at least 15 days before the start of production of OPGW to manufacture according to this specification, giving the engineer the Client time have a representative present for the tests specified in the applicable standards, and any other additional tests if required.

The Contractor shall submit two (2) copies at no additional cost for each order placed with suppliers or subcontractors. Each of these purchase orders shall bear the following notes on the cover of the order. "This order is subject to inspection and shipment by the engineer of the project owner or its authorized representative"

Procedures for testing not specified explicitly must conform to standards specified.

The Contractor shall perform the required tests at no additional cost. The engineer of the project owner must attend these trials.

No matter if the engineer to the Owner is present or not, the Contractor shall perform all tests specified in the appropriate standards and shall provide the engineer of the Client data obtained from all three trials (3) copies.

8.6.1 Testing of optical fiber

All cables of optical ground should be tested on the drum by using the principle of reflectometry in English called Optical Time Domain Reflectometer (OTDR). After OPGW are installed and connected, each channel must be tested fiber end to end by a test power of radio and OTDR.

Each strand of fiber to be measured with a tester for optical fibers, such as OTDR (OTDR) EXFO FTB‐100 or an equivalent approved by the representative of the Owner. The test results must be printed from files produced by the test equipment.

Each of the fibers of a cable must be installed an attenuation equal to or less than that specified by the manufacturer of the cable.

Each fiber must be measured in both directions and two wavelengths (1310 nm and 1550 nm).

The attenuation of all the links connecting the various optical patch panels and optical housings must be measured:

a) Test all new fiber optic cables;

b) Test of all mergers, including the installation of temporary connection if necessary. The attenuation should not exceed 0.1 dB for a fusion splice and 0.3 dB for

mechanical splice. If unsuccessful, the splice should be reversed until it meets the attenuation requirements. The loss per connector should not be greater than 0.5 dB per connector.

Measurements should be performed starting from the junction box where the reflectometer is located by going to the other end of the course.

All fibers of a cable must be verified in accordance with standard ANSI/TIA/EIA‐568B. This standard defines the network cabling and includes cable, connectors and splices between two distribution panels or optical fiber connection.

For that audits are effective and appropriate, the following points should be observed:

a) connecting cords test are the same size and degree as those of the optical fiber tested, and that the connectors are of the same type as those used in the network;

b) The apparatus of optical power of the light source is defined in the same wavelength as that of the equipment that will use the optical fiber;

c) The unit of optical power is calibrated according to the period prescribed by the manufacturer;

d) The unit of power or the OTDR function to within ± 1310

10 nm and 1500 ± 20 nm for the verification of the monomode optical fiber, in accordance with the standard ANSI/TIA/EIA‐526‐7;

e) All connectors, adapters and patch cords are clean during the inspections and measures taken;

f) The fiber cords and adapters used for the tests are superior and do not show excessive wear due to repetitive use.

All results must be documented and a detailed audit report including at least the following information must be provided to the contractor or his representative:

a) Identification of the cable, fiber or fiber link;

b) Length of course;

c) Impairment of fibers in each cable after installation (dBm);

d) Impairment of each splice (dBm).

Total attenuation of each link of the trail (may include multiple cable segments) (dBm). A register must be kept of all tests and verifications carried out and test reports must be countersigned by the officials. They specify for each equipment, if any, anomalies and work remaining to complete. They must, moreover, be available upon request. The optical fibers should not be connected to the equipment at this stage or before testing.

All fibers that do not meet this specification must be connected to new or replaced. The tests and results must be documented. An official test report must be submitted to the Engineer to the Owner for review and comment.

8.6.1.1 Commissioning Plan

An implementation plan tests should be provided for approval by the contractor or his representative prior to any test or measure. Not limited to, the following information must be provided:

The forms to be used to certify Works of tests performed;

The list of equipment and cables to check.

The Contractor shall proceed with the tests of all equipment. All corrections or modifications required during the testing and commissioning to meet the requirements of this Technical Specification must be effected at the expense of the Contractor until satisfaction of the owner's representative.

8.6.2 Reports

The Contractor shall give the Engineer to the Owner three (3) copies of certificates showing that all required tests were performed and the materials and workmanship conform to specified requirements. No deliveries of OPGW shall be made on site prior approval by the engineer to the Owner test certificates relating to the total amount of reels in every detail of delivery.

The Contractor shall conduct tests of all equipment. All corrections or modifications required during the testing and commissioning to meet the requirements of this Technical Specification must be effected at the expense of the Contractor until satisfaction of the owner's representative.

8.6.3 Documentation

The Contractor shall provide all technical information from manufacturers on cables and equipment installed. This documentation must include, without limitation, technical specifications, installation manuals and user manuals.

8.7 Accessories for OPGW

All accessories must be designed so that no transmission impairments in fiber optic cable appears for all operating conditions. The optical fibers must be mobile in the case where the line is in use. All tests on complete OPGW are required to be made with accessories that will be provided and used in the line.

8.7.1An anchoring clamp

The anchor assembly will consist of a helical spiral anchor fixed by means of a shackle. The spirals are made of aluminum alloy, they will be of sufficient length to evenly distribute the OPGW radial pressure low. The anchor assemblies shall withstand a load equal to 95% of the tensile strength of the OPGW.

8.7.2Suspension clamp

The towers of suspension, the suspension clamps are used. The clamp body must be aluminum alloy, preferably forged. The OPGW will be tight in the suspension clamp through preformed armor (Armor Rods).

8.7.3 Shocks

The OPGW manufacturer must provide a vibrational study based on measures of self‐damping in English called "self‐damping measurements". Following this study, model and location of Stockbridge dampers'' type'' should be recommended. The measurement of the internal damping of OPGW will be performed according to standard IEC 62568.

8.7.4 Junction boxes (BJ) and connectors for optical fibers

Junction boxes must be weatherproof provided. These junction boxes must include all hardware required to connect and protect the fibers. The location of the boxes must be 5.0 m above ground level. The preparation and cleaning of the tube and the fiber ends must be made using the tools and methods recommended by the manufacturer of OPGW. The fusion connector must be performed by qualified personnel.

Optical losses should not be on average more than 0.08 dB per connector with no connections with more than 0.15 dB loss. A fitting finish must be supported within the junction box by an appropriate board and protective. It should be possible to extract the fiber from a connected device support without risk of damaging it.

Junction boxes shall be provided with two to four inputs used. These entries should be sealed with plastic Thermofit. The material of aluminum cans should be water resistant or stainless steel.

8.7.4.1 Installation of Junction Boxes (BJ) in telecom rooms

The minimum technical requirements for the provision and installation of the BJ, connecting equipment and accessories in the telecom rooms.

The supplier is responsible to comply with the requirements of this specification.

Any change in service or supply not meeting the requirements of this technical specification must be submitted for approval by the owner or his representative.

The BJ must be metal and designed to:

a) be installed in a tropical environment with rigorous salt spray from ocean winds;

b) resistant to mechanical shock in accordance with the standards of industrial plants;

c) weather resistant natural relative humidity (98%) and temperature (up

40 * C).

8.7.4.1.1 type housing

a) The housing must be made for wall mounting;

b) The housing must have an ability to install 4 (four) of patch panels 12 ST singlemode adapters per panel, and then plates melting to 48 optical fibers;

c) The holes of input and output cable will be at the bottom of the housing;

d) The cable glands must be provided with material that does not allow the entry of moisture and dust;

e) The front panel (door of the BJ) must be provided with a security system ensuring the hermetic sealing of the BJ;

f) The BJ must be fitted with a padlock eye.

8.7.4.1.2 Equipment and fittings

Equipment and fittings primarily include, but are not limited to:

a) Installation Kit Wall of BJ;

b) melting platen holder;

c) platinum melting;

d) patch panel with ST single mode;

e)'''' Pigtails (primer cord) with ST connector singlemode UPC ceramic.

8.7.4.2 Installation of outdoor BJ

The minimum technical requirements for the supply, installation, and connection to a junction box (BJ) of optical fiber for outdoor installation.

The supplier is responsible to comply with the requirements of this specification.

Any change in service or supply not meeting the requirements of this technical specification must be submitted for approval by the owner or his representative.

The BJ must be metal and designed to:

a) comply with the IP67;

b) be installed outdoors in a tropical environment with rigorous salt spray from ocean winds;

c) resistance to shock in accordance with the standards of industrial plants;

d) weather resistant natural relative humidity (98%) and temperature (up 40 º C).

8.7.4.2.1 type housing

a) The housing must be made for mounting on a pole high voltage line;

b) The housing must have an ability to install two (2) of patch panels 12 ST singlemode adapters per panel, and then plates melting to 24 optical fibers;

c) The holes of input and output cable will be at the bottom of the housing;

d) The cable glands must be provided with material that does not allow the entry of moisture and dust;

e) The front panel (door of the BJ) must be provided with a security system ensuring the hermetic sealing of the BJ;

f) The BJ must be fitted with a padlock eye.

8.7.4.3 Equipment and fittings

Equipment and fittings primarily include, but are not limited to:

a) Installation Kit Wall of BJ;

b) melting platen holder;

c) platinum melting;

d) patch panel with ST single mode;

e)'''' Pigtails (primer cord) with ST connector singlemode UPC ceramic.

8.8 Terms of delivery

The Contractor will ensure the proper handling of equipment. It should have adequate means to transport or handling of contracting companies specialized in this area. Loading and unloading of reels of cables and accessories must be according to rules of art. The cable drums should not be rolled on the ground to avoid sharp edges or hard body from damaging the cables. During transport or storage it is imperative to:

Always keep the drum upright, resting on the tread on both cheeks. Under no circumstances should they be placed flat on the cheek;

Do not drop abruptly to the ground;

Ensure that the slings do not support the moat.

To avoid any risk of severe impact or damage in transit (tearing and damage to the moat), the material shall be attached firmly on the platform of transport that will be suitable for such transport. It is strongly recommended to the tenderer and its forwarding to take every precaution possible to land transport. The additional calibration of reels by pebbles, stones or other inappropriate means is unacceptable.

8.9 Marking

The following information must be clearly marked in indelible paint on each side of the reel driver, in French and English:

Model name and OPGW;

Caliber of OPGW;


Net weight in kg;

Gross weight in kg;



Reel no;



Purchase order number;

Name and address of the purchaser;


Destination depot / yard.

In addition, each end of OPGW on a drum must have a label indicating non‐corrosive, in French and English, the first five items listed above.

8.10 Packaging


The requirements described below must be met to ensure that the equipment is capable of withstanding, without damage or deterioration, land transport and maritime operations and maneuvering, loading and unloading until it reaches its destination.

8.10.1 Reels

The OPGW is to be delivered in standard lengths on wooden reels or steel single use. The reel must be designed for operations with normal tension peeling.

The drums of the OPGW cable drums shall be packaged with a protective coating resistant to moisture. The interior sides of the reels must be covered fiber panels solid moisture‐resistant.

The two outer layers of the OPGW to be superimposed and the outer layer must be covered with paper mildew resistant. A protective envelope of a single layer of wood fiber panel mildew resistant, secured with steel bands, everything must be packed.


The drums should be closed with wooden slats, all secured with two steel bands. The steel strips must be attached to the wooden slats at intervals.


8.10.2 Hardware and Accessories

Hardware and accessories should be packed in strong wooden boxes suitable for both the maritime and land transport, and must be clearly identified with the following information:

Description;

Number of rooms;

Net and gross weight

Contract number;

Name of project;

Destination.

8.10.2.1 Accessories

The plans and specifications do not necessarily contain a complete and detailed description of all the accessories needed to perform the work. Therefore, all the accessories required to perform a complete work that meets the requirements of the plans and specifications shall be supplied and installed according to the rules of art.

8.10.2.2 Equivalency

Models of the equipment specified are for guidance only and reflect the equipment specifications meet the needs. Any equipment that the bidder wishes to present as equivalent must be approved prior to installation of the equipment.

Notwithstanding the mentioned models, the sponsor must ensure the interoperability of all equipment with each other and with existing and planned facilities.

Following the approval of equivalence, the necessary amendments should be made to the drawings and listed to reflect these changes.

8.11 Deliverables



Sheets of guaranteed specifications attached to this specification for each type of OPGW proposed;


A short description of manufacturing processes and equipment used in the production of

OPGW;

A complete list of routine tests performed during and after manufacture and description of test equipment used;

A complete list of all the type tests performed, and all relevant data confirming the results;

Detailed drawings of each type of drum that is used for packaging of OPGW

including hardware component and method of manufacture;

A list of existing transmission lines equipped with OPGW and proposed dates of commissioning of these lines.



Details of the manufacture, testing and delivery schedules and proposals for transport / delivery;

Certificates covering the raw materials used in the manufacture of OPGW;

Certificates covering the routine tests performed on the components prior to manufacture of OPGW;

Certificates covering the testing of the OPGW, prior to shipment;

Curves stress / strain for all types of OPGW to be provided;

Curve giving the coefficient of elasticity at 0 ° C, 75 ° C and 105 ° C;

Coefficient of linear expansion;

By giving a list reel, reel number, the caliber of OPGW, the exact length, net weight, gross weight, the number of joints made during the stranding and their distances from the ends;

Temperature curves of the short‐circuit OPGW versus time.

9 INSULATORS AND EQUIPMENT FOR DRIVER AND CABLE GUARD 330 KV

9.1 General

This specification covers the requirements for detailed design, manufacturing, testing, delivery and installation of insulators and hardware assemblies for use with the driver and guard cable steel coated with aluminum. Insulators and hardware assemblies must be provided in accordance with the details shown on the drawings and the requirements described below in this document. The material for the OPGW is covered in clause 7.

The following items are covered in this specification.

Conductive insulators for suspension, anchor and chain shoulder strap;

Hardware to attach the insulators to towers and to attach the wires to insulators;

Hardware to attach the ground wire aluminum coated steel for pylons.

9.2 Standards

All equipment and materials, as well as factory tests shall conform to latest standards namely:

ASTM A153 Zinc Coating (Hot‐Dip) on iron and steel hardware

IEC 60060 test techniques to high voltage

IEC 60120 Dimensions of ball and socket couplings of string insulator

IEC 60305 Characteristics of insulator units of cap and pin type

IEC 60372 Locking devices for ball joints and socket couplings of string insulator units ‐ Dimensions and tests

IEC 60383 Insulators for overhead lines of nominal voltage above 1000 V IEC 60437 Radio interference test on high‐voltage insulators

IEC 60507 Artificial pollution tests on high‐voltage insulators for ac systems

IEC 60575 Endurance test endurance test and thermo mechanical couplings of string insulator

IEC 60797 Residual strength of string insulator units of glass or ceramic material for overhead lines after mechanical damage of the dielectric

9.3 Insulators

The isolator must be a ball made of high quality porcelain or toughened glass and comply with IEC publications mentioned above or other equivalent national standard. The external shape of the insulators should be designed for use in areas subject to pollution of all kinds.

Disks isolators shall be provided with locking devices to splint according to IEC 60372. They must be of phosphor bronze or other approved equipment. Their design must allow the quick and the replacement of insulators or fittings in an online transaction.

The rods or pins insulators must be of forged steel, without cracks or air pocket. Each insulator comprises a ring corrosion casting directly on the rod of the insulator at the time of its manufacture. The material must be corrosion ring zinc with a purity higher than 99.7%.

Insulators shall comply with the requirements shown in Table 9‐1.

Table 9‐1: Types of insulators

Type of insulators U120BP U120BLP Nominal diameter of the insulator 280 mm 330 mm nominal spacing 146 mm 146 mm Minimum nominal creepage 440 mm 550 mm Dimension of standard coupling 16A CEI 60120 16A CEI 60120 Internal height of the ball housing 16A CEI 60120 16A CEI 60120 Opening of the dimension of the pin 16A CEI 60372 16A CEI 60372 Dimension of the pin 16A CEI 60372 16A CEI 60372 Withstand voltage shock waves CEI 60383 CEI 60383 positive 125 kV 125 kV negative 125 kV 125 kV Withstand voltage at industrial frequency CEI 60383 CEI 60383 dry 85 kV eff 85 kV eff in rain 50 kV eff 50 kV eff Min. (perforation in oil) 130 kV eff 130 kV eff Max. RIV at 1 MHz 50 µV 50 µV resistance electromechanical 120 kN 120 kN mechanical strength 120 kN 120 kN

9.4 Details of insulator strings

To ensure satisfactory operation under normal conditions, pollution or fog and given the experience in the region, the number and type of insulators recommended is as follows:

Chain suspension Line in general (Areas of High Pollution)

‐ Type of units

‐ Number of units per chain

‐ Creepage distance (mm / kV)

‐ Creepage total (mm)

Anchor chain

‐ Type of units

‐ Number of units per chain

‐ Creepage distance (mm / kV)

‐ Creepage total (mm)

U120 BP

20

26.7

8800

U120 BP

21

28.0

9240

U120 BLP

20

33.3

11000

U120 BLP

21

35

11550

In the case of suspension towers aligned to a single chip, all phases will be supported by external insulator strings in "I". In general, the strings "I" will be simple strings. Double chains of insulators "I" will be used for crossing power lines, railways, main roads with asphalt wearing course and very long ranges. The towers will be equipped with anchor chains double insulators. All channels will anchor an additional insulator, giving them a greater electrical resistance and will reduce the likelihood of indirect flashovers resulting from a lightning strike on the pylons anchor. 9.5 Pipe insulator strings and cable guard The general requirements for suspension insulator strings and anchor are indicated on the drawings. Fittings shall withstand without damage or deform all dynamic constraints, static electric and anticipated. Assemblages ball and socket must be in accordance with IEC publication 60120. Locking devices must conform to IEC Publication 60372‐1. All strings of suspension insulators and anchoring, including insulator strings to slip, should be protected with horn protection or protection rackets galvanized steel, placed a driver's side and the other the ground side to prevent the cascade connection above the insulators in the case of arcing. The size and shape of these spark gaps or rings should be designed to: Ensure that the arcs are initiated between their ends; Reduce the voltage applied to lightning shock on insulator strings. The Contractor shall provide evidence, using appropriate tests, that the best compromise between the two above conditions was performed. When a single bolt is used to attach devices arc, adequate precautions must be taken to prevent rotation or improper installation. The suspension clamps are the type slipper. They will be equipped with a hinge at the driver allows a maximum freedom of swing. They will be constructed of aluminum alloy at least as regards the parts in contact with the driver and provided for cable with armor rods. The shape of the groove of the body of the clamp will be slightly flared in its upper part. The grooves of the body and bonnet shall be bell‐shaped at each end, and all parts in contact with the driver will be smooth and without rough spots. All clips will be designed to avoid any possibility of deformation of the conductor and son of separation that make up the driver. The suspension clamps to secure the conductors and shield wires should be used with appropriate protective liners preformed cables and suspension clamps.

The most remote from the clamping pressure should not be less than twice the diameter of the conductor. The length of the clamp from one side to the other one should not be less than eight times the diameter of the conductor.

The driver must be mechanically clamped in an approved manner. The resistance against sliding of the clamp must be greater than 25 kN but less than the resistance to fracture under tensile stress of the conductor or conductor. Thus the shift to 25 kN and over (no upper limit) voltage shift must be guaranteed.

For strings voltage insulator, a rudder assembly suitable to be provided so as to ensure that the tension of the conductors is divided equally between the parallel chains. Extension parts must be connected to the end of the pylon of each side chain of the structure, when necessary, so as to ensure that the rudder pedals insulator chains must ultimately be at right angles relative to the driver.

All connections of tension and suspension, other than the junction sleeves and anchors, must have a minimum tensile mechanical equal to 110% of the insulators to take account of normal wear and tear over the life of the line.

9.6 Detailed requirements for assemblies of equipment

All joints shall be designed and manufactured to meet the following requirements:

Assembling equipment must include all clamps, spreader bars, shackles, links, rods, bolts, nuts and locking devices to attach the wires to insulators, insulators for hanging ties to the pylon and to support and attach the ground wire the masts;

All assembly fittings should be easy to install and all fittings must be suitable for line maintenance (off);

All plates must have a smooth chamfer radius of all the appropriate holes to prevent a condition clamping under normal operation leading to a break due to fatigue of the material base;

All suspension clamps to secure the conductors and shield wires should be free to move in all directions from the vertical plane;

All types of accessories of assembly should be tested for fit and mechanical and electrical integrity. Copies of electrical testing must also be submitted with the bid.

9.6.1 Connections of conductors

All components attaching the conductors to insulators shall be suitable and compatible with standard ball and insulators in accordance with the specified mechanical and electrical values.

9.6.2 Assemblies of the shield wire

All material for suspension assemblies for guard cable must be adjusted to ensure that the mechanical strength of the assembly is suitable for application as shown in the drawings.

All equipment for the cable anchor assemblies guard must support 95% of the rated breaking strength of the cable guard.

9.7 Materials of construction for the hardware

All components for assembling the hardware must be malleable iron, steel, galvanized steel or aluminum or any combination of these materials which are recommended to meet the mechanical and electrical performance required by this specification. All metal must be free of burrs, sharp edges, bump, and should be smooth so that the interconnecting parts are connected properly and that the parties can be mounted and dismounted quickly. All ferrous metals shall be galvanized hot dipped in accordance with ASTM AI53. All parts threaded steel nuts and bolts‐cons must be galvanized after threading. It is permissible to tap again against nuts and lock nuts after galvanizing, provided that the protective zinc or tapping oil remains on the full length of the nets. All nuts and cons‐nuts should be screwed onto the threaded bolts of any length without using a wrench. All cotter pins must be manufactured of stainless steel.

9.8 Testing

9.8.1 Insulators

In addition to standard tests provided with the bid, the insulators should be topics during manufacture, all routine tests and sampling described in clause 8 of IEC 60383.1. The test procedures and the samples must also comply with IEC 60383.1. When a batch of insulators with a special identification mark has been rejected, no isolator this lot should be tested and the Contractor must demonstrate to the engineer of the project owner that adequate measures have been taken to set aside the lot rejected insulators.

9.8.2 Channels of insulators

The suspension assemblies and anchor for the driver should be subject to electrical tests given in IEC 60383.2 and IEC 61284 as appropriate.

9.8.3 Routine tests of equipment

Classification of tests

In subsequent articles, the requirements of different types of connections are described. The tests are divided into three groups: Type tests: These tests are intended to establish design features. They are normally made only once and repeated only when the design or manufacturing equipment is changed;

Test sample: The sample tests are intended to verify the quality of materials in manufacturing. They are made of parts randomly sampled lots submitted for approval;

Routine tests: The routine tests are designed to remove defective parts. They are applied to each lot for which the tests are applicable.

General requirements for testing

Test types: Unless otherwise approved, certificates giving the results of tests appropriate types, running on at least three identical batches including all essential details must be submitted with the bid;

Test sample: The number of samples for these tests shall be selected in accordance with Table 9‐2;

Table 9‐2: Testing sampling

Number in batch Number of samples

! 100

100-300

300-1200 1200-3000

3000‐10000

"10000

1

5

10 14 20

Un échantillon de plus par chaque 1000 lots

Samples must be randomly selected batches. The engineer of the project owner has the right to make a selection;

If the samples meet the test requirements, the lot is considered to conform to the requirements of the standard. In cases where a trial would not give satisfactory results, it will again double the number of parts. If one or more of these new tests were not satisfactory, the batch of parts in question may be refused;

Routine tests:

‐ When routine tests are specified, they must be applied to any lot.

Verification of dimensions

It must be verified that the test samples meet the requirements of this specification or that they comply with the approved drawings, particularly the dimensions for which tolerances are special rules and details affecting interchangeability (ie ‐d. dimensions for which the gauges are specified);

It must be verified that the test samples meet the requirements of this specification or they comply with the approved drawings, particularly the dimensions for which specific tolerances apply;

Unless otherwise approved, the following tolerances are permitted for all dimensions except for special cases:

Dimension (mm) Tolerance

! 35 + 1.0 mm

"35 + 2.5%

Test method

Test types:

The connection must be maintained in a tensile test machine. The tensile force is first increased to 75% of the breaking load guarantee, this effort will be increased to guarantee the load. The break does not occur with a load less than the breaking load guarantee.

Test sample:

‐ Verification of dimensions: the dimensions of the samples must be checked;

‐ Mechanical test: the test must be the same as the test type;

‐ Testing of galvanizing: The galvanized parts must be tested according to ASTM A153.

Routine tests:

‐ Mechanical test routine: This test should only be applied on castings and fittings that are manufactured by welding where the weld is opposite to the force applied when the joint is in use. A tensile load equal to 50% of the nominal breaking load must be applied to fittings and maintained for 30 seconds. The connection must not be damaged by the test.

9.9 Marking

9.9.1 Insulators

Each isolator should have a durable and legible marking identifying the manufacturer, year of manufacture and the mechanical force and electric combined assigned.

9.9.2 Hardware

Each party hardware must be permanently marked by molding or stamping to indicate the manufacturer's name and catalog number.

9.10 Packaging

All insulators or hardware must be packed in strong wooden boxes suitable for both the maritime and land transport, and be clearly identified with the following information:

Description;

Number of rooms;

Net weight and gross weight;

Contract number;

Name of project;

Destination.

9.11 Deliverables



Sheets of guaranteed specifications;

A detailed program of testing to be carried out during manufacture;

Type test certificates of insulators;

Detailed drawings of insulators with all mechanical and electrical characteristics, material description, unit weight, etc..;

Drawings of each type of chain including all fittings;

Drawings of each piece of equipment with indications of net weight, materials used and mechanical failure loads (if applicable);

Descriptions of the locking devices to prevent loosening of bolts.


The required deliverables following the award of the contract are four (4) copies of:

Reports of all tests during manufacture, including certificates or laboratory analytical reports giving full details and demonstrating any compliance performance mechanical, thermal, electromechanical and electrical insulators and detailed drawings of all the manufacturer;

Reports of all tests during manufacture and, if appropriate, special tests of fittings and accessories line driver when tested as part of a global assembly (ie, d. Complete insulator string);

Final drawings of insulators, all accessories and line drivers, special tools and equipment supplied as individual components and complete assemblies appropriate;

Final drawings of insulators, all accessories and line drivers, special tools and equipment supplied as individual components and complete assemblies appropriate.

10 ACCESSORIES LINE 330 KV

10.1 General

This specification covers the detailed requirements for the design, manufacture, testing and delivery of driver accessories and guard cable steel coated with aluminum.

Compression sleeves anchor;

Junction sleeves;

Repair sleeves conductor;

Protective linings;

Shock absorbers;

Spacer dampers;

Strut braces;

Spherical air warning beacons.

The detailed requirements for OPGW accessories are included in the section of OPGW.

10.2 Standards

All equipment and materials, as well as manufacturing test, must comply with the following standards:

ASTM A153 Specification for Zinc Coating on Iron and Steel Hardware

BS 3288 (Parts 1‐4) Insulators and fittings for overhead power lines

BS 4579 Performance of compression joints in electric cable and wire connectors

(Aluminum conductors)

IEC 61284 Overhead lines ‐ Requirements and tests for hardware equipment

IEC 61854 Overhead lines ‐ Requirements and tests for spacers

IEC 61897 Overhead lines ‐ Requirements and tests for Stockbridge vibration dampers wind

10.3 Materials and Manufacturing

Accessories and conductor shield wire must be made of quality materials to meet the mechanical and electrical performance required by this specification. All ferrous metals shall be hot dip galvanized in accordance with ASTM AI53. All parties threaded steel nuts and bolts‐cons, should be galvanized after threading. It is permissible to tap again against nuts and lock nuts after galvanizing, provided that the protective zinc or tapping oil remains on the full length of the nets. All nuts and cons‐nuts should be screwed onto the threaded bolts of any length without using a wrench. All cotter pins must be manufactured of stainless steel.

10.4 Junction sleeves, sleeves anchors, thimble end, shell‐pass

The anchor sleeves and junction type will "compress". They must maintain the cable 95% of the nominal load of conductor breakage.

The design of the sleeves and anchor junction and the tools for their assembly will minimize the likelihood of an assembly and improper installation. The design of the tool assembly must be

approved and, after approval, any modification of mounting methods or tools can not be made without the written permission of the Engineer to the Owner. All hubs and anchoring junction will comprise a minimum of parts and nuts apparent will be locked.

There will be no relative movement between the different layers of the conductor may alter its behavior.

The anchor sleeves are designed to not loosen due to vibration or other.

The conductors are connected end to end by two concentric sleeves. Diversions will be implemented through shell bypass placed on the main cable and a cable connector located on the branch cable. The thimble shall be guaranteed resistance to sliding as much as 25% of the guaranteed resistance of the conductor.

Joints and clamps to be compression type made according to the manufacturer's instructions and to ensure, firstly, guarantee the electrical conductivity and, secondly, a mechanical strength of tension members at least 95% of the theoretical breakage of cables to which they are installed. The design of these parts (anchor clamps, anchor sleeves and junction) must be made for a single pair of dies is required for each class of driver.

The temperature rise in the sleeves and anchor junction clamp, terminal end and all similar components, must not be greater than the temperature rise in the conductor when current flows through the rooms correctly assembled.

10.5 linings protection (Armor‐rods)

In order to strengthen the phase conductor and the shield wires at each suspension clamp, a gasket twisted son of the same alloy as used in the conductor is inserted between the conductor and the suspension clamp.

This seal (or armor‐rods) will be preformed type, allowing installation without special tools.

10.6 Vibration

In order to limit aeolian vibration of cables at high frequencies, but low amplitudes caused by wind speeds of 0.5 to 10 meters / second, the type shock absorbers "Stockbridge" will be installed on all phase conductors and shield wire on each side of suspension chains.

The number and characteristics of the dampers to be installed and their locations on the cables will be calculated based on the type of terrain, the tension in the cable and the characteristics of the scope. Fixing them will be designed to prevent slippage on cables without leading to a strain or injury of the latter. In general, they should not allow a bending force to clamp the driver more than ± 150 # m / m.

10.7 Spacer Dampers

The Contractor shall provide rigid spacer dampers for use on dual‐ACSR conductor TERN.

The spacer for double conductor must be designed to withstand a short circuit value of having an asymmetric tip of 78.75 KA without permanent deformation. Members must be designed to keep

the conductors separated when the wind blows at speeds up to 36 m / sec. The design should allow the twisting motion between the conductors (longitudinally and vertically), which may occur during operation, without damaging the conductors.

The spacer should not be rigid, it must be rigid and must have a body. The clamps braces must have a minimum length of 50 mm and must be supplied with neoprene body.

Members must resist longitudinal movement between its pincers at least ± 40 mm of permanent deformation with the use of neoprene or the mechanical seal of the body rigid. Members must resist longitudinal movement between its pincers at least 106 ± 10 mm (one million) cycles without fatigue failure.

Members must resist rotation of the clamp in a plane perpendicular to which that contains the two conductors and the conductor axis of ± 25 degrees without permanent deformation, the spacers must immediately return to the first position for themselves when the rotation condition disappears. Members must resist rotation of the clamp in a plane perpendicular which contains both the driver and dual parallel to the axis of ± 10 degrees to 106 fatigue cycles without failure.

Members must resist dynamic forces produced by the short‐circuit, the spacers that allow drivers to touch one another in a maximum short‐circuit with the condition that the drivers will return to its original position keeping their spacing of 400 mm. The pilot arrangement in duplicate driver must have an asymmetric maximum value of at least 78.75 kA, the value similar symmetrical with the peak value (31.5 kA) and duration of 0.2 sec.

The above features must be substantiated by a type test and be certified by the Client. Subject tests certified and internationally recognized, the Employer may suspend this requirement.

Bidders should note that the quantities of spacers in the Price Schedule are estimates for bidding only. Actual quantities required will be based on specific characteristics of the entrepreneur of the spacer and the manufacturer's recommendations and approved spacer close to the consultation and approval of the Employer.

10.8‐straps braces

The spacer straps should be adjusted to maintain 400 mm between sub‐conductors. They must be sufficiently rigid to maintain and ensure good electrical continuity between sub‐conductors. The suspenders‐braces should be designed to allow efforts on torsional and axial movement between sub‐conductors without damaging them.

The suspenders‐braces should be designed to withstand a weight up to 500 N to reduce the sway braces.

The clamping device must not damage the driver when tightening or at any time during the service life of the spacer‐damper.

The spacer straps must be installed and removed a line powered with the help of appropriate tool.

10.9 Tags air warning

Of warning beacons diurnal must be installed on overhead ground wires of overhead lines in areas deemed hazardous to air navigation: crossing rivers or streams, crossed by deep valleys, approaching airports and airfields.

Overhead warning beacons shall comply with the requirements of civil aviation authorities, military and civil defense of the country and recommendations of International Civil Aviation (ICAO), Federal Aviation Administration (FAA) and Civil Aviation Authority (CAA).

The warning beacons should be composed of two hemispheres bolted smooth and fit into each other without sharp edges.

Tags must be capable of supporting a weight of 100 kg without cracking or warping, be as light as possible with a diameter not less than 600 mm.

The attachments of spherical markers must be preformed metal rods, specifically designed for the size, model, and the diameter of the conductor.

The warning beacons should be made of reinforced polyester or fiberglass with a UV stabilizer, or a synthetic material approved by the Client. This material should not develop cracks caused by exposure to sunlight and should not break when struck by a shot during his lifetime.

The warning beacons should be colored red and white in accordance with international recommendations, as well as the Convention on International Civil Aviation, equipment must be sustainable and must maintain its original color during their lifetime.

They must have drainage holes in the bottom half to prevent water accumulation in the tag.

Bolts, nuts and washers shall be manufactured of stainless steel to prevent corrosion and for a longer life. The nuts of clips of the tag must be designed so as not to loosen due to vibration or other.

To prevent damage to the strands of the cable guard because of vibrations, each tag must be equipped with at least one vibration damper type Stockbridge. The manufacturer of warning beacons / damper manufacturer shall determine the location of tags through a study of vibration analysis.

The hanger clips of warning beacons should be designed to prevent sliding, rotation, oscillation and wear. They should not cause electrolysis or harmonic vibration on the cable guard. Wings must be designed so they do not create turbulence.

The position of the tags must meet the following requirements:

The tags on the two shield wires of all litters should be spread for a distance between two tags of less than 30 m;

The first and last transmitter in all must be brought to approximately 10 m defining the scope of the pylon.

10.10 Marking

Each component part of equipment will carry a reference number corresponding to the catalog number or detailed plan of the room number will be embossed or cast hit in the material legible and indelible. This number will also be included on all equipment plans. The number of matrices to be used will be marked on the gaskets and compression clips.

10.11 Packing

All line accessories shall be packed in strong wooden boxes suitable for both the maritime and land transport, and be clearly identified with the following information:

Description;

Number of rooms;


Contract number;

Name of project;

Destination.

10.12 Deliverables



Sheets of guaranteed specifications, appended to this specification for each type of proposed accessory line;


A short description of manufacturing processes and equipment used in the production of accessories;

A complete list of routine tests performed and samples during and after manufacture, and a description of test equipment used;

A complete list of all the type tests performed and all relevant data confirming the results;

Detailed drawings of each credit to be used for packing earth wires including hardware component and method of manufacture;

A list of existing transmission lines equipped with accessories and proposed dates of commissioning of these lines.


Deliverables required after contract award are four copies (4) of each of the following:

Details of the manufacture, testing, delivery schedules and proposals for transport / delivery;

Certificates covering the raw materials used;

Certificates covering the routine tests performed;

Certificates covering the type tests, sample and routine on fittings;

A reproducible set of drawings showing all accessories;

Main dimensions and manufacturing tolerances;

Electrical and mechanical characteristics;

Connection dimensions;

Materials and standards;

Standards for heat treatment of steel;

Standard galvanizing;

Unit weight;

And identification marks;

Catalog number and drawing number of the manufacturer;

A complete list of sub‐components purchased from other suppliers with details of test procedures and sampling methods.

11 GROUNDING 330 KV

The Contractor shall provide and install equipment grounded in accordance with this specification.

The grounding of all towers must be made permanent and effective. Furthermore, the resistance of grounding requirements must be met before starting the work of unwinding of drivers.

11.1 Standards

The material covered in this specification shall conform to the following standards, unless otherwise indicated.

ASTM 8193 Test for electrical resistivity of conductor materials ASTM A153 Specification for Zinc Coating on Iron and Steel Hardware ASTM B227 Hard‐drawn copper‐clad steel wire ASTM B228 ‐Concentric‐lay‐stranded copper‐clad steel conductors

BS 18 Methods for tensile testing of metals BS 3289 Determination of resistivity of metallic electrical conductor materials 80 IEEE Guide for safety in substation grounding IEEE 81 Guide for Measuring earth resistivity, ground impedance and earth surface

of potentials of a ground system 11.2 Materials The ground to be executed is shown in the drawings. Unless otherwise described in this document, all materials must be of industrial quality standard suitable for the intended use. The materials include installing ground rods, the son of grounding and attachment fittings, as shown in the drawings.

11.2.1 Piquet Grounding

The stakes of copper‐clad steel for grounding lines 330 kV shall be constructed of high strength steel. The pure electrolytic copper is uniformly impregnate the core at the molecular level to ensure corrosion resistance and eliminate electrolytic action. The steel core has sufficient rigidity so that we can push the stake with a hammer or mechanically.

The upper surface of the stakes must be flat to provide a bearing surface for driving. The other end should be threaded with a beveled edge.

The minimum size of the stakes must be:

Nominal diameter should be 19 mm

Minimum length 3.0 m

11.2.2 Connection cable for earthing and grounding compensated

Connecting cables to the grounding and earthing offset of steel towers, fences and metal objects must be copper clad steel 19 No. 7 AWG, nuance 40 HS, and must meet the requirements of ASTM B227 and ASTM B228.

11.2.3 Connectors

All towers need to be electrically connected to the earth. A hole for connecting the son of grounding will be provided on each chord.

All connections to ground rods to be exothermic type welding high strength.

All cable connections shall be exothermic type welding high strength.

11.2.4 Packaging

The driver of copper clad steel must be placed on reels mounted on sturdy wooden slats if necessary.

The following information must be clearly marked in indelible paint on each side of the reel in French and English:

Manufacturer's name;

Location of the manufacturing plant;

Destination;

Description;

Current length;

Gross and net weight.

The hardware must be packed in strong wooden boxes suitable for both the maritime and land transport, and be clearly identified with the following information

Description;

Number of rooms;


Contract number;

Name of project;

Destination.

11.3 Earthing of towers

All towers will be grounded in accordance with the drawings. The earthing will be done in stages to achieve the required strength. Resistance readings of the towers will be provided to the engineer to the Owner at the end of each stage.

Step 1: Each tower must be grounded in two opposite diagonals. The stakes grounding should be buried in an upright position on the extension line of the axis connecting the legs of the tower to land, at a minimum distance of 8 m from the base of the tower. The stakes grounding must be connected to the uprights of the mast by connectors grounding and son of grounding compounds made of steel cables covered with copper having a minimum conductivity of 30% compared to copper. The size of the bolts connecting the connectors grounding through holes in the frames is in the tables guaranteed specifications.

11.3.1 Extension of the grounding

At the base of the tower, where the ground specified in step 1 is inadequate, it must be improved with the approval of the Engineer to the Owner as follows:

Step 2: make the grounding of the other two opposite diagonals, similar to the first two;

Step 3 and 4: Install a picket or more additional and son of grounding connected by attachment fittings at a distance of 8.0 m stakes previously installed, as shown in the drawings;

If steps 2, 3 and 4 do not decrease the resistance to ground, the Contractor shall submit to the engineer of the Client arrangements as it deems best to lower this value.

4.11 Testing on site

In the presence of the engineer of the Employer, the Contractor shall measure the earth resistance to the location of each tower using measuring instruments and methods approved by the engineer of the Client. When measuring resistance, we will record the date, and temperature resistance and soil conditions.

11.4.1 Resistivity of the Earth

The electrical resistivity test should be done along the transmission line or right of way. These should preferably be made to a number of different locations spaced to provide an indication of variations in resistivity with the location and depth.

The number of measurements must be determined on the basis of the following:

Every 10 km along the corridor of the transmission line;

At the location of attachment of the towers;

When soil conditions change.

The Wenner four‐electrode method must be used to measure soil resistivity. The test soil resistivity should be done as part of the geotechnical investigation is carried out for foundation design information. If tests of earth resistivity are not made, a resistivity of 1000!‐M will be assumed.

11.4.2 Resistance to Earth

The resistance value of earthing of each tower will be equal to that applied by the CEB on its network or if less than or equal to 10 ohms for all soil types. .

11.4.3 Information finals

The Contractor shall provide the following information:

Instruction manuals and booklets for each building site after the tower or other grounded object;

As‐built drawings of equipment grounding, soil type and values of the measured resistance (register of actions).

11.2.3 Connectors All towers need to be electrically connected to the earth. A hole for connecting the son of grounding will be provided on each chord. All connections to ground rods to be exothermic type welding high strength.

All cable connections shall be exothermic type welding high strength. 11.2.4 Packaging The driver of copper clad steel must be placed on reels mounted on sturdy wooden slats if necessary. The following information must be clearly marked in indelible paint on each side of the reel in French and English: Manufacturer's name; Location of the manufacturing plant; Destination; Description; Current length; Gross and net weight. The hardware must be packed in strong wooden boxes suitable for both the maritime and land transport, and be clearly identified with the following information Description; Number of rooms; Net weight and gross weight; Contract number; Name of project; Destination. 11.3 Earthing of towers All towers will be grounded in accordance with the drawings. The earthing will be done in stages to achieve the required strength. Resistance readings of the towers will be provided to the engineer to the Owner at the end of each stage. Step 1: Each tower must be grounded in two opposite diagonals. The stakes grounding should be buried in an upright position on the extension line of the axis connecting the legs of the tower to land, at a minimum distance of 8 m from the base of the tower. The stakes grounding must be connected to the uprights of the mast by connectors grounding and son of grounding compounds made of steel cables covered with copper having a minimum conductivity of 30% compared to copper. The size of the bolts connecting the connectors grounding through holes in the frames is in the tables guaranteed specifications.

11.3.1 Extension of the grounding At the base of the tower, where the ground specified in step 1 is inadequate, it must be improved

with the approval of the Engineer to the Owner as follows: Step 2: make the grounding of the other two opposite diagonals, similar to the first two; Step 3 and 4: Install a picket or more additional and son of grounding connected by attachment fittings at a distance of 8.0 m stakes previously installed, as shown in the drawings; If steps 2, 3 and 4 do not decrease the resistance to ground, the Contractor shall submit to the engineer of the Client arrangements as it deems best to lower this value. 4.11 Testing on site In the presence of the engineer of the Employer, the Contractor shall measure the earth resistance to the location of each tower using measuring instruments and methods approved by the engineer of the Client. When measuring resistance, we will record the date, and temperature resistance and soil conditions. 11.4.1 Resistivity of the Earth The electrical resistivity test should be done along the transmission line or right of way. These should preferably be made to a number of different locations spaced to provide an indication of variations in resistivity with the location and depth. The number of measurements must be determined on the basis of the following: Every 10 km along the corridor of the transmission line; At the location of attachment of the towers; When soil conditions change. The Wenner four‐electrode method must be used to measure soil resistivity. The test soil resistivity should be done as part of the geotechnical investigation is carried out for foundation design information. If tests of earth resistivity are not made, a resistivity of 1000!‐M will be assumed. 11.4.2 Resistance to Earth The resistance value of earthing of each tower will be equal to that applied by the CEB on its network or if less than or equal to 10 ohms for all soil types. . 11.4.3 Information finals The Contractor shall provide the following information: Instruction manuals and booklets for each building site after the tower or other grounded object;

As‐built drawings of equipment grounding, soil type and values of the measured resistance (register of actions).

11.5 Deliverables 11.5.1 Deliverables required with the submission Available with the submission must include: Sheets of guaranteed specifications, appended to this specification; Detailed drawings for each piece of equipment; Instrument and method used to measure the electrical resistivity. 11.5.2 Deliverables required after contract award Deliverables required after contract award are four (4) copies of each: Final drawings of each piece of equipment; Detailed drawing showing the complete grounding of the foundation of the tower.

12 STEEL LATTICE TOWER 330 KV 12.1 General This specification covers design, manufacturing details, testing and manufacture of steel lattice towers. All towers are addressed in this specification lattice galvanized steel to arms horizontal sheet, square base. They have four feet fitted with separate sockets set into the massive foundations. All materials, design, detail, fabrication and testing must comply with the requirements described herein and in the drawings. All the design and details shall be submitted to the approval of the Engineer to the Owner. The engineer of the project owner shall have the right to require the Contractor at no additional cost, to make the changes necessary to bring the building in accordance with the Contract Documents. All materials must be new. Any steel frame with the presence of hole filled should not be used. The bolts used for assembly of the elements of the towers and the bolts levels will be rough ordinary bolts, nuts and head in accordance with the ASTM standard A394 and ASTM A307 respectively.

No ambiguity or omission in the drawings or in this specification, relieve the Contractor of the responsibility to provide quality materials. When an abnormality is found, all work completed before these discrepancies are corrected must be borne by the Contractor. 12.2 Standards and Codes The materials covered in this specification shall conform to the following standards, unless indicate differently: AISC Manual of Steel Construction MANUAL, Volume 1, Structural Members, Specifications and Code ANSI / ASCE 10-97 Design of Transport Latticed Steel Structures ASTM A123 Zinc (Hot-dip galvanized) Coatings on Iron and Steel Products ASTM A143 Recommended Practice for Safeguarding Against embrittlement of Hot-dip Galvanized Structural Steel and Procedure for Detecting embrittlement ASTM A153 Specifications for Zinc Coated (Hot Dip) on Iron and Steel Hardware ASTM A239 Test Method for Locating Spot in A Zinc Coating on Iron or Steel sections by the Preece Test ASTM A307 Carbon Steel Bolts and Studs 60,000 PSI Tensile Strength ASTM A36 Specification for Structural Steel ASTM A370 Test Methods and Definitions for Mechanical Testing of Steel Products ASTM A385 Practice for Providing high quality zinc coating (hot dip) ASTM A394 Steel Transmission Tower Bolts, Zinc-Coated and Bare ASTM A563 Carbon and Alloy Steel Nuts

ASTM A572 High‐Strength Low‐Alloy Columbium ‐ Vanadium Structural Steel ASTM A6 General requirements for Rolled Structural Steel Bars, Plates, Shapes and Sheet Piling A90 ASTM Test Method for Weight of Coating on Zinc‐coated (galvanized) Iron is Steel sections IEC 60652 Mechanical tests on overhead line structures IEC 60826 Loads and resistances of transmission lines 12.3 Type and use of pylons The family of towers includes five (5) standard media types. Table 12.1 indicates the designation, use and main characteristics of each type of tower. Their use on a particular project depends on the

profile and course of the line. Any proposal by the Contractor in order to optimize the overall cost of a line without undermining its effectiveness will be analyzed is optional Pylon alignment type A3 equipped with insulator strings in "I" can be used in a straight line and up to 2 ° deviation subject to reduced wind range; Low angle tower type B3 equipped insulator strings in "I" can be used for line deviations from 0 ° to 10 °; Angle tower through C3 equipped with chains of insulators in anchor: will be used for lead line from 10 ° to 30 °, as cascading fall pylon and pylon as transposition of phases; High angle tower and anchoring D3 equipped with chains of insulators in anchor: will be used for line deflection of 30 ° to 60 ° and limit switch (Off) from 0 ° to 15 °; Angle tower strong and anchor type E3 equipped with chains insulator anchor: will be used for line deflection of 60 ° and 90 ° limit (stop) from 15 ° to 45 °. The Contractor shall install an anti‐pylon cascade every 5 km, but must not exceed 7 km. The tower must be designed to withstand the load case where all the cables are broken on one side with a wind maximum at 28 ° C. To improve the electrical behavior of the line, complete transposition of the phases must be performed when the length of the line section exceeds 100 km. Transposition towers must be as close as possible without exceeding 90 km to 100 km, For lines 330 kV Volta in Lome Lome‐C and C‐Sakété, it is recommended that they be fully implemented to minimize the coupling between the phases and improve the performance of unipolar reclosing. The lines can be transposed to two locations, the third (1/3) and two‐thirds (2/3) of the length of the line, while retaining equal lengths in each arrangement of the phase conductors. This will, however, different arrangements at each end of the line and special attention should be given to the connection lines. To standardize the arrangement of phases in each position, we recommend preparing a scheme for implementation similar to that shown in drawing No. 016742‐5100‐43 DD‐0018. The drawings attached to this specification provide an overview of each type of tower. The Contractor shall finalize the geometries to respect all electrical clearances and other requirements in this specification. The basic parameters of towers are given in Table 12.1.

The slope and the spacing between the main legs under the corset must be based on analyzes of cost optimization (tower and foundation) to be submitted for review before the design details of the

towers. All types of towers must be designed so that all frames including the legs of the towers are erected prior to backfilling the excavation of foundation, the trench bottom must be perfectly level in order to bring the wings of angles and obtain a surface bearing correct. The depth of the excavation will be adjusted accordingly. The setting of the bases should be done by an approved method. All towers, including foot extensions and the foundations must be designed to withstand, without failure, the worst combination of load and the worst combination due to the various provisions of the foot extensions (equal and unequal). 12.4 Design of pylon 12.4.1 Codes All towers must be designed in accordance with standards, codes and standards listed in clause 12.2. The shield wire easels must be essentially symmetrical and designed to withstand the worst loading caused by the OPGW and the overhead earth wire made of strands of steel coated with aluminum "Alumoweld". The effect of sphere of aviation warning beacons should be considered when applicable. 12.4.2 Approval The Contractor shall submit to the engineer to the Owner for approval all design calculations and detailed design details that may be requested with the electronic files and programs created with the software Power Line Systems (PLS‐CAD and PLS‐Tower). This includes, but is wanting restrictive: Design parameters; Calculations arrow and voltage; Load calculations; Loading shafts; Loads of foundations; Design of the leg of the foundation; Map location of the line and longitudinal profiles; Detail drawings / fabrication;

Construction drawing and material lists.

12.4.3 Wind The towers must be designed to withstand the wind. This wind is regarded as acting horizontally and perpendicularly to the direction of the line. The speed of the wind (wind speed of 10 minutes at 10 m height, in a field B according CEI60826) along the line varies from 90 km / h to 115 km / h. Wind load on the son, insulators and towers will be calculated as specified in IEC 60826. Regarding the calculation of wind pressure, wind speed reference adopted for this line is 115 km / h with a roughness factor kr = 1.0, as indicated by the IEC 60,826. Therefore, the reference wind speed (VR) is 115 km / h to 10 meters above the ground. The maximum wind speed will be associated with an average daily temperature of 28 ° C. At the lower temperature minimum (12 ° C), a low speed wind of 58 km / h (50% of high winds) will be applied. 12.4.4 Resistance Factors The resistance factor used in the design of the towers will be 0.625 under load in the intact and in condition 0.9 of broken cable. 12.4.5 Litters Table 12.1 presents the wind range and scope required weight of the line. However the scope equivalent is equal to 450 m.

Table 12-1: Basic parameters of the towers and limits of use for repair

TYPE OF TOWER A3 B3

C3 D3 E3

UTILISATION Suspension Suspension anchorage anchorage anchorage

Usage limits Alignment (0° - 2°)

Angle (0° -10°)

Angle (0° -30°)

And anti-cascade

transposition (0°)

Angle (30° - 60°) Limit

(0°-15°)

Angle (60° -90°) Limit

(15° -45°)

chains insulator

T Suspension I - chain Tension face value

1 x 120 kN 2 x 120 kN

Attaching the ground wire

Suspension anchorage

Height of the lower phase (m)

19,75 20.2 (at an

l

18,5 17,5

17

36,25 38.2 (at an

33,5 30,5

30

Extension section (m)

6,0, 12,0 6,0, 9,0 6,0, 9,0 6,0

Leg extension 0,0, 1,5, 3,0, 4,5 0,0, 1,5, 3,0, 4,5, 6,0

0,0, 1,5, 3,0, 4,5, 6,0 0,0, 1,5, 3,0, 4,5,

0,0, 1,5, 3,0, 4,5

Difference max. between the leg extensions

1,5 3,0 3,0

3,0

LIM

ITS

LAI

D

scope wind (m) – Max.

500 800

Max 450 to angle. Max 450 to angle.

Max 450 to angle.

Weight range ( )

625 1000

800 800

800Weight

range (m) - Min.

150 150

-200 -200

-200

Report carried

0,8 0,

- - -

Maximum range (m)

700 900 900

90

Note that the nominal capacity of the insulator strings mentioned above must be verified by the Contractor for compliance with safety factors prescribed and all other clauses of this specification. 12.4.6 Clearance distances pylons The minimum distance between any live part and ground (any metal part of the tower) will be as follows (see clause 3.2): a) a clearance of 2600 mm with swinging of the insulators or straps at a pressure of 78 Pa wind, at a temperature of 28 C daily; b) emission of 1650 mm with swinging of the straps or insulators corresponding to a wind speed equal to 50% of the maximum wind speed, at a temperature of 28 C daily; c) emission of 600 mm with swinging of the straps or insulators corresponding to the maximum wind speed at a temperature of 28 C daily. The geometry of the towers including distances to ground (swing diagrams) must be verified by

the method CIGRE brochure No. 322. 12.4.7 Loads on towers We assume that the charges are shown in Tables 12.2 and 12.3 for each loads acting simultaneously on the pylons in the harshest conditions. a) horizontal transverse loads: These are the forces applied by the pressure limit of the wind on the conductors and ground wires to daily temperatures. These charges will be combined to limit the pressure of wind on the towers and insulators; It is assumed that the limit pressure of the wind is in the direction most critical on the pylons. This involves checking minimum wind 90, 70 and 45 degrees with respect to the line. In the case of corner towers, the transverse horizontal loads resulting from the deviation of the line will also be included. In all cases, the wind must be considered in both directions blowing right and left of the line. b) horizontal longitudinal loads: Pylon alignment: longitudinal forces applied to the support by broken conductors are equal to the residual voltage of a phase or ground wire (the minimum temperature) without wind. The residual voltage is reached the steady state after the break of a conductor in the center of a series of six alignment tower. In the case of the shield wire, the residual voltage is equal to 100% of the voltage without wind. The residual voltage is estimated at 70% of the voltage and a phase will be calculated by software capable of finite element according to the actual geometry of the towers in the line. Angle tower: It will be designed to resist breakage simultaneously a phase conductor and a shield wire to the speed of the wind (wind limit) to the daily temperature. All angle towers will be designed to withstand a voltage unbalanced equivalent resulting from unequal spans of 250 m and 500 m on each side of the tower, in addition to all other charges. All angle towers that will temporarily stop support during construction will be designed to withstand the tension of all cables on one side of the tower at a wind speed greater than 70% on cables, pylons and insulators. In this case, it is considered that scopes are similar to those provided by cable breaks. If necessary the contractor will install temporary anchors. Stop the tower will be designed to withstand the maximum voltage of all the cables on one side. The tower will also stop designed to withstand the load cases where drivers are attached to the station of arrival or departure following the worst case of deviation angles. c) Vertical loads:

Normal case: The vertical load applied to the support by the conductors and shield wires will be made based on weight limits (maximum and minimum). These charges are in addition to the dead weight of the structure, insulators and strings. Construction and Maintenance: The towers will be designed to withstand a 50% increase in litter weight at all attachment points of conductors and shield wires, except at a point (any point) where the will increase by 100%. This charge will be combined with longitudinal and transverse horizontal loads that apply when the tower is used to support temporary cessation during construction. In addition to previous charges, the main legs of ties and consoles will be designed to withstand a concentrated load of 4.0 kN at the center of the unsupported length, while all other horizontal members (those with an angle less than 15 ° to the horizontal), including those of the lattice‐buckling against, will withstand a load of 1.5 kN additional applied in the center.

Table 12‐2: Load case for suspension towers

Load Case

Vertical loads* Transve

l dLongitudinal

l dResistance f t

system intact

Each day Weight of all cables to reach maximum weight

Component of the voltage at 28 ° C with no wind.

- 0,625

Construction and maintenance

1.5 times the daily charge at all points except one where it is 2.0, combined with mounting costs in the horizontal members.

1.5 or 2.0 times the component of the voltage mentioned earlier (see the vertical load).

- 0,625

Wind limit - Transversal

Identical to the daily load (to calculate the uprising, another case load will be used to reach minimum weight).

Limit wind pressure on all cables with a range maximum wind wind + + on the pylon of

- 0,625

Alpha Wind limit - Oblique

Identical to the daily load (to calculate the uprising, another case load will be used to reach minimum weight).

Limit pressure of wind on all cables with a maximum wind range + wind on the tower at an angle of + 45 ° component of tension.

Limit wind pressure on all cables with a range maximum wind + wind on the tower at an angle of 45 °

0,625

system dam

Out of a phase conductor or a ground wire

70% of the daily charge for broken wires and 100% for others.

Component of 70% voltage conductors without wind or 100% voltage for wires.

Component 70% of the voltage for drivers no wind or 100% voltage for wires.

0,90

aged Fall of a phase conductor

1.5 times the daily charge for the phase conductor and fell

Alpha 20% of the vertical load of the phase

0,90

* These charges are in addition to the weight of the tower, insulators and accessories, which is constant.

Table 12‐3 ‐ Load case for pylons anchor

Load cases Vertical loads *

transverse loads

longitudinal loads

Resistance factor

system intact

Each day

Weight of all cables to reach the combination weight the most rigorous

Component of the tension in the cables to 28 ° C without

- 0,625

Anchor during construction (with a limit pressure of wind 50%)

The same as the daily loads.

Component of tension in the cables to the minimum temperature and with a reduced wind on the wires, poles and insulators.

Component of the tension in the cables to the minimum temperature

0,625

Maintenance (no wind)

150% of daily charges and expenses mount.

The same as the daily loads.

- 0,625

Wind limit - Transversal

The same as the daily loads (you must use the scope to calculate the minimum weight lifting).

Component of tension in the cables and the limit pressure of the wind on all cables, pylon and insulators.

Voltage unbalanced due to unequal spans equivalent.

0,625

Wind limit - Oblique

The same as the daily loads (you must use the scope to calculate the minimum weight lifting).

Component cables on the tower and insulators to angle of 45 °.

Voltage due to unbalanced equivalent unequal brought to 45 °.

0,625

system intact

Out of a phase conductor or a ground wire

100% of the weight range for all cables.

Component of the voltage + wind limit on all the spans and pylons (70% in the broken phase conductor only).

The same as the wind limit + longitudinal component of the broken conductor.

0,90

* These charges are in addition to the weight of the tower, insulators and accessories, which is constant. 12.4.8 Design of frames and connections

unless otherwise established in this specification, the towers will be designed in accordance with ASCE 10‐97 lattice designs supports for transmission lines. The design will also consider the standard IEC 60826 which requires structural loads for transmission lines. Moreover, the software TOWER of Power Line Systems must be used for the design of all towers. The files of these towers should be forwarded to the engineer to the Owner at each stage of their development and validation. Frames against buckling of the lattice (redundant) must support an axial load of tension or compression corresponding to 2.5% of the maximum load in compression of the ribs which they support. The minimum thickness of the frames must be: Main leg: 6 mm Secondary chord: 5 mm Redundant frame: 3 mm Plates: 6 mm or at least 1 mm larger than the thickness of the flange that connects The maximum length of the frames should not exceed 12 m. Design details the minimum spacing between bolts, rolled edge distances and cut from the centers of holes are given in the following table:

Bolt diameter (mm)

Hole diameter (mm)

Minimum spacing between bolts (mm)

AlphaMinimum edge distance rolled (mm)

Minimum edge distance cut (mm)

16 17.5 40 23 23

20 21.5 48 27 28

Only bolt diameters above should be used. A maximum of two (2) different sizes of bolts can be used on a single mast. The elements of main legs must be assembled end to end by means of bolted joints and cover the inside flange must not be less than the thickest of connected frames. The assembly of frames for recovery can be used to connect the frames with unequal wings provided that stops the inside flange is milled to make the connection. All connections must be capable of withstanding the forces that apply to frames and must be made as close as possible to the point of working to reduce eccentricities. Connections must be detailed in order to reduce the eccentricity to the practical minimum while limiting the use of gussets. The minimum thickness of a plate must be at least 2 mm greater than the thickness of the ribs it

connects. The dimensions of the plates should be such that there is no local buckling or tearing of the local. The use of fur in the connections should be avoided whenever possible. The diagonal ribs in tension must be fully connected to the gussets where possible to avoid the use of fur. The ribs of the tower must be precision manufactured to bolt together easily at the site without undue strain on the bolts. The folding wings of an angle to glue the two wings is strictly prohibited the hole diameter should be equal to bolt diameter plus 1.5 mm. However calculating the net area of the profile is done by considering towers 3 mm larger than the bolt diameter. The structure must be designed so that all parts are accessible for inspection and maintenance. Whenever possible, the vertical flanges of the angles must be directed downward to prevent water accumulation. In addition, drainage holes should be provided in areas likely to hold water. All similar parts must be perfectly interchangeable. 12.5 Drawings of design, design notes, detail drawings and materials list 12.5.1 Notes calculations and design drawings The calculation notes accompanied by design drawings, as applicable, must provide the following data: For each tower, the designer must provide for review a complete set of drawings including all the following elements: A drawing of diagram (in one or more sheets) showing the shape and dimensions of the pylon and extensions, the redundant array of frames, the table of total masses of the tower for all heights, the table of combinations of extensions and summary table showing the frames for each chord tension and compression loads, the load case, the geometry and use, the number of bolts required, the type of steel and necessary comments. The drawing must include a table refines the electrical clearances between different parts of the tower and drivers based on climatic design loads. All distances maintenance with the position and dimensions of the editor, the platform when required and drivers must appear in a table on an additional sheet of drawing sketch. For each electrical clearances and distances shown in Tables maintenance, there will be a real value column and a column of values required; All loads and their points of application including wind loads acting on the structure of the towers and tables giving feedback on the foundations. For purposes of calculation of wind loads, the tower must be divided into a number of representative sections taking into account the height of application for the maximum height of the tower. A report giving the wind loads on towers shall include the gust factors, height and drag used in the calculations; A drawing of notes giving general information and details on materials, symbols, cups and other manufacturing information. This drawing also includes a list of drawings of the tower. Related to the design notes with, as appropriate, the tables on the drawings must show:

The tensile and compression forces with critics and the case load associated to each frame;

Designation of the frame, dimensions, turning radius, effective slenderness ratio, number and diameter of bolts required, net area, steel grades, the minimum and maximum loads, capacity ratio calculated to those critical of the frames for connections and the frames themselves; The calculated weight of galvanized pylon; The designer must specify to load charts on the foundations, the maximum responses (or combinations maximum) for all uses of the pylon. 12.5.2 Drawings details Detail drawings for all parts of the tower must indicate the exact dimensions of all the frames, with the holes cut and bending required. This includes the drum and foot extensions. At the joints and when gusset is needed to assemble a chord with a main member using bolted connections, these connections should be as detailed. Detail drawings shall include among others: Number, size and length of bolts; Thickness and dimensions of the gussets. Each component part of equipment will carry a reference number corresponding to the catalog number or detailed plan of the room. This number will also be listed on the assembly drawings supplied by the Contractor. 12.5.3 List of Materials The materials list should indicate the size, length and weight galvanized for each chord, and the total weight of parts and elements of the tower (even with head extension sections, foot extensions and amount of the foundation). It must also include the number of bolts, nuts and washers per structure. 12.6 Manufacture and general characteristics of the material All equipment must be manufactured according to the latest revision of "Specification for the Design, Fabrication and Erection of Structural Steel for Buildings" published by American Institute of Steel Construction (AISC). The manufacture shall not commence prior to approval of drawings. The manufacture of parts must be top quality materials. All parts must be cut to the dimensions provided detailed drawings prepared by the Contractor and approved by the Engineer to the Owner. All components are interchangeable between towers of the same type and drilling templates are identical in plan and in space. Bolts and nuts must be tapped or threaded correctly. All parts will be an easy installation with minimal set and will be provided with bolts, nuts, washers, etc.. to allow a complete assembly, fast and safe.

The steel members should be soaked in a dichromate solution after galvanizing for the Prevention of white rust during shipping and storage. 12.6.1 Bolts and nuts Bolts shall be hex head, and supplied hot dip galvanized to ASTM A 394. Bolt heads must be properly centered on the body, and have a smooth bearing surface and perpendicular to the axis of the bolt without burrs. Bolts bus bar connector located below the anti‐escalation will be fitted with special anti‐disassembly to avoid theft bracket (bolt type crimped, type HUCK or similar). 12.6.2 Punching and drilling The holes can be punched to a thickness equal to the diameter of the hole least 1.6 mm for steel structure, the hole diameter and less than 4.7 mm for high‐strength steel. The holes must be drilled or punched and reamed to a thickness greater than 19 mm in the case of mild steel and for a thickness greater than 16 mm in the case of high‐strength steel. The distance between the axis of a bolt hole and the edge of the gusset or section should at least be equal to 1.5 times the bolt diameter, unless a validation constraints within the limits permitted tear. The holes should have a diameter equal to that of the bolt, increased by 1.5 mm. Particular attention should be paid to ensure that the position of the holes conform to drawings. Any chord with holes or cuts more than 0.8 mm from the position shown on the plans will be rejected. No welding, plugging or filling will be permitted unless approved by the Engineer to the Owner. Punching in a folding zone to be executed after folding. The holes that are distorted will not be accepted. The holes which receive rods or bolts folded must be specified with a chamfer so that it adapts to the curvature and diameter of the rod or bolt. 12.6.3 Galvanizing Uniformity of the coating The test of uniformity of the coating shall be performed according to ASTM A239. The number of one‐minute immersion in a solution of copper sulphate should be as follows: Profiled steel plates 6 Bolts, nuts and similar hardware 4 Minor repair The hardware on which the galvanizing has been damaged should be tempered again unless in the opinion of the Engineer to the Owner, the damage is local and can be repaired, using a zinc rich paint approved . This repair will be as follows: Removing rust with sandpaper or wire brush areas where corrosion appears and dandruff zinc

nonadherent. Cleaning solvent and wipe. Treatment with phosphoric acid will be banned; Application of one or two coats of paint above (minimum thickness of dry film: 100 microns and% zinc "85) to be implemented according to the supplier's instructions. The coating has a uniform thickness and adhere firmly to steel. If permitted by the Engineer to the Owner, the holes will be painted on site as indicated above before assembly of the elements. 12.6.4 Assembly in workshop Before construction of the series and before galvanizing, a tower of each type will be assembled at the factory floor, in order to realize its perfect execution. In particular, the perfect concordance of assemblies will be controlled. No additional fitting, not shown on the drawings, shall be permitted. The installation will be easy and will not cause any deformation of the structure as a whole or any part thereof. After galvanizing and batch shipping, at least two frames of each type will be assembled with bolts to ensure final good correspondence of the holes and check the clearance between bolts and holes. When errors in the assembly drawings and workmanship were discovered. Each drawing will be revised by the Contractor and resubmitted for review after approval of the Engineer to the Owner. 12.6.5 Quality Assurance Testing The Contractor shall provide when submitting all the detailed procedures for quality assurance, and will perform all inspections and tests necessary for the production of towers. Materials, equipment, fixtures and fittings will be subject to test certificates mechanical, chemical, X‐ray, etc. executed in accordance with the standards. Certificates and test reports will be provided to the plant engineer to the Owner. It will be audited the dimensions and tolerances of execution in accordance with standard ASTM A6. All materials will undergo a visual inspection before and after galvanizing. Fragility tests must be performed according to ASTM A143. It will also process a test of uniformity of the coating according to ASTM A.239. The coating thickness must be verified in accordance with ASTM A90. The number of samples to be taken, the number of lot to be inspected, etc.. must conform to appropriate ASTM standards. 12.7 Accessories pylon 12.7.1 General Each tower must be provided with lifting plates, stirrups, anchors, attachment points of conductors and cable guard. The towers will also have the necessary accessories and nameplates. 12.7.2 Bolts‐levels

To allow maintenance of towers and accessories, bolt‐on steps shall be a main member of the drum and on each of the two outer sides of the head (delta structure). The row of steps begin at a height of 3.0 m from ground level and will end at approximately 1 m below the attachment point of the shield wire. They should be spaced 375 mm. Each bolt‐level must withstand a vertical load of 1500 N. 12.7.3 Signs The number of pylon signs shall be two (2) types, one for observation and identification from the ground and the other is for the tracking helicopter. The plates are aluminum alloy, weather resistant (rain, sun) and the writing will be stamped and painted with indelible paint. Table 12.4 summarizes the different types of plates. All towers will be provided with plates whose dimensions are defined in terms 016742‐5100‐43‐DD‐0011. They shall be secured by bolts Vandalism on a support located above the anti‐climbing. Table 12‐4: Types of nameplates

plates

location

Type of tower Number plate and circuit

identification Sign of danger Phase identification sign

Lower part of the pylon,above the devices anti‐scaling

All towers All towers All towers

Tracking plate helicopter At the top of the pylon

In all 10 Towers

12.7.4 Anti‐climbing devices All towers will be equipped with a protective belt above the ground so it is not possible to climb them without special means. This protection belt made of barbed son will have a door bolted in the corner of the tower supporting levels of access. 12.7.5 Grounding of the mast cable guard Holes for the fixed points of grounding must be provided on trestles conductor. The position of a fixed point must be such that there is a space around the fixed point to be able to be connected easily. The position of these holes and the requirements of the grounding of the tower shall conform to details shown on the drawings. The Contractor shall provide all plates grounding, rods, clamps cable grounding and other equipment required in the hardware list. 12.8 Packing Packaging methods and details of packing lists are the responsibility of the Contractor and must be submitted for approval by the engineer to the Owner, who reserves the right to inspect equipment

and packaging before delivery. The Contractor shall take all necessary precautions to pack the provision so that it undergoes no deterioration during transportation by land, sea and maneuver operations, loading and unloading to its final destination. Any galvanized material shall be adequately protected against the risk of corrosion as the "White rust", which can be caused by water, salt air or prolonged moisture. 12.9 Equipment Maintenance for live line The maintenance equipment for power lines must be recommended by the Contractor. 12.10 Testing This section discusses the testing of prototype tower that are required for each type of tower. The geometric configuration of the tower to be tested will be proposed to the engineer of the Client based on the results of analysis of the towers of varying heights. The sites selected for testing of towers must also be submitted for approval by the engineer of the Client A galvanized pylon of each type, with extensions, shall be manufactured and transported to the test site. Extension cords must be those that are most critical among the various provisions of extensions considered in the analysis and design of the pylon. The prototype must be manufactured in accordance with the drawings. The physical properties of materials of construction must conform to those specified in the reference standards. No part of any tower subject to testing will be included in the provision unless authorized in writing by the Engineer to the Owner. 12.10.1 Testing pylon Before starting production of the first tower, a full scale test will be performed in a specialty station on a tower of each type, the towers will be trying the same as under the provision. All stages of testing must conform to IEC 60652 latest editions. Efforts to apply to the towers during testing will be those resulting from the technical specification IEC 60826 with case loads anticipated. The engineer of the project owner must provide the applicable five loading cases by type of tower, which includes among others the case of loading causing failure. The Contractor shall submit to the engineer to the Owner for approval a detailed program for testing the towers, showing methods to conduct the tests and how to load application. Following the approval procedures and testing programs by Engineer, the Contractor shall notify the Engineer to the Owner at least 30 days before the scheduled tests. 12.10.2 Final production of the pylon The Contractor shall ensure that the material specifications and manufacturing of all towers as

provided in workshops and on site are in strict compliance with the towers that have passed the tests. In the event a fault is detected, the Contractor shall replace defective poles at no additional cost. Any costs incurred in assembling, transporting, delivery delays and any other expenses or losses caused by this incident must be fully assumed by the Contractor. However, the engineer of the Contracting Authority reserves the right to forego the test towers, if the Contractor has previously passed the testing, installation and commissioning of the tower and can provide similar certificates tests duly certified by the engineer and are considered acceptable. 12.11 Deliverables 12.11.1 Deliverables required with the submission Deliverables required with the submission include: Sheets of guaranteed specifications attached to this specification for each type of tower proposed; The quality assurance program of the manufacturer and / or manual with a list of international standards / national specifications covering raw materials, components, processes, tolerances, test procedures, etc.., And a list of tests normally carried out on raw materials and description of test equipment used; Drawings showing the proposed tower loading, size, method of grounding and the loads on the foundations; Drawings showing the electrical clearances for all critical conditions; A list of existing transmission lines for which the designer and the manufacturer supplied the towers and the dates of commissioning of these lines. 12.11.2 Deliverables required after contract award The required deliverables following the award of the contract are four (4) copies of each: The detailed design calculations for design loads and the detailed testing program, including tables of distribution of forces on the towers in the different cases of solicitation; Drawings of the foundation (base plate, connecting the main leg of the pylon to the amount of the foundation); Drawings setting for insulator and shield wire for all types of pylon and drawings showing the distances to ground (swing diagrams); Details of the manufacturing schedule and proposed transportation / delivery; Detailed plans of the tower and building plans; Diagram of use of the tower; The configuration and mounting drawings of all accessories including signs of danger, number, phase and number of air;

Test certificates for the quality of steel and galvanizing process; Test certificates for the quality of the bolts and nuts and galvanizing process; Complete test report, including the charges that caused the breakdown for each type of tower. FOUNDATIONS 13 330 KV 13.1 General Foundations must be designed for all types of pylon on the basis of the results of soil tests. For technical and economic reasons, several types of foundations can be built in a given soil type, because the logistics of construction, project size, access conditions, available equipment, etc.. can sometimes tip the balance in favor of a particular type of foundation. The Contractor is responsible for providing the appropriate type of foundation for each tower location. The soil studies and necessary tests shall be undertaken by the Contractor in accordance with this specification. The Contractor shall also, during the geotechnical subgrade, measuring the aggressiveness of soil and groundwater to provide adequate protection of all foundation elements. The study of soil and methods of protection will be subject to the approval of the Engineer to the Owner. The Contractor shall design, depending on the quality of soil and its aggressiveness, the foundation design for the towers, including special foundations, as required. Special foundations (piles or other) may be required in places where the ground will not be considered strong enough. 13.2 Design Criteria Foundations must be designed to withstand attacks, uprisings, reversals, vertical and horizontal forces. Foundations should have sufficient strength to withstand all loads to which the tower was designed. The tower foundations will be designed to take the ultimate loads transmitted by the towers considering the basic parameters of the soil. Safety is a factor of 1.5 will also apply to foundations. Concrete foundations must be designed according to the latest edition of the following standards: CIGRE 206 (foundation design) and 308 (plant foundations) IEEE 691 Guide for transmission structure foundation design and testing ACI ACI 318 Building Code Requirements Efforts helped prescribed in the code should not be exceeded under loading conditions. The coating layer covering the minimum concrete reinforcing bars must be 65 mm. The coating should be increased to 90 mm for concrete placed in the middle of excavation, and rock surfaces subject to corrosion caused by sulfate or corrosive chemicals.

The density of concrete shall be considered to 2400 kg / m³ in dry soil and 1400 kg / m³ in soils below the water table. The Contractor shall submit with the bid: Preliminary drawings of the proposed foundation design; The complete calculations and detailed design of a typical foundation by soil type; All criteria considered, given, and others, used for foundation design; All relevant documentation; The location of the laboratory where the aggregates and concrete cubes or cylinders will be tested. 13.3 Specifying the types of foundation Overall, six (6) soil types were characterized with their range of geotechnical properties and eligible properties in the calculation of the strength of the foundations. The results of geotechnical investigations will clarify all soil types that apply to foundation lines. Table 13.1 defines the design parameters applicable to specific soil types.

Table 13.1 ‐ Design parameters applicable to specific soil types

Soil description

type (class)

Maximum allowable bearing capacity (1) (kPa)

Dry unit weight (2), (3) 3(kg / m)

Un drained shear strength Cu(kPa)

Standard penetration test. N rate of

penetration (4)

Cone angle of elevation (cohesive soil)

Lifting angle of the cone (non‐cohesive soil)

without stepped

without stepped

Roc healthy R > 1000 2000 - - 45° -

Very hard cohesive soil Very loose sand, soft rock or fracture

1

400

1800

> 200

> 30

25°

25°

Cohesive soil hard, firm dense sand

2

300

1800

100 - 200

20 - 30

25°

20°

Average soil cohesion

3 200 1600 50 - 100 10 - 20 20° 10°

Stiff cohesive soil Loose sand to compact

4

100

1600

25 - 50

5 - 10

10°

5°

loose sand 5 50 1400 10 - 25 3 - 5 0° 0°

(1) Based on an allowable soil pressure or compaction criterion of 25 mm.

(2) Soil embankment and natural well compacted to 95% of Proctor.

(3) It is considered that the unit weight of submerged soil is 1000 kg/m3.

(4) Hot hype by 0.3 m.

13.4 The rock anchors for soil type R, a rock anchors may be required if bedrock is 1 or 2 meters below ground. Anchor rods of diameter greater than 25 mm will be anchored in holes drilled and grouted special cement. All anchors should be tested. The required number, depth and spacing of anchors must depend on the rock quality. The solution proposed by the Contractor shall be submitted to the engineer to the Owner for approval. The pull‐out tests shall be performed according to ASTM D4435 and in the presence of the Engineer to the Owner. At least five (5) different tests should be performed for each type of rock and for each model and length of anchor rod. The locations on the route of the line where the trials will be held to determine with the approval of the Engineer to the Owner. The Contractor shall provide materials, equipment, transportation, labor and all other services and resources required for testing. 5.13 Foundation Slab foundation & chimney and pyramid‐level slab and chimney For soil type 1, 2, 3 and 4, a concrete slab foundation and army pyramidal chimney or foundation slab chimney‐level and will normally be required. These types of foundations can be used when the pressure of permitted land is less than 400 kPa for soil type 1, 300 kPa for soil type 2, 200 kPa for soil type 3 and 100 kPa for soil type 4. In general the calculation will use the method known as the angle of elevation. It consists of determining the holding force of a solid by taking into account, besides the weight of the massive weight of the land raised by the slab. It is assumed that the raised lands is a truncated inverted pyramid whose side faces form an angle with the vertical dependent on the quality of the ground. This angle will be zero for bad land, about 30 ° in normal ground and may reach 70 ° to the rock. An estimate of the angles of elevation that may be encountered will be given by the surveys along the line. The compression force applied to the foundation will be the sum of the following efforts: Force transmitted by the base in the event concerned; Weight of the concrete; Weight of land located above the slab. This compressive stress should not drive under the slab at a pressure greater than the maximum allowable pressure of the ground.

We admit that current field; the shear force applied to the mass is absorbed by the reaction of the surrounding soil. The aboveground part of the chimneys will be considered a console built into the ground and subjected to a bending force. The concrete of the chimney should be armed. If necessary to ensure proper distribution efforts on the slab and avoid working concrete in tension, the foundation will be armed. The foundations will be designed according to the most critical combination of reaction towers and load cases. The foundation dimensions depend on soil conditions encountered at each location of the tower, and the type of tower, taking into account the angle of the line in question. Normally, the size of foundations does not vary with height differences of the types of towers. The Contractor shall provide a foundation design at the lowest total price possible price that reflects the design, materials, performance and handling. The prices of foundation must be registered in the price schedule. The bases of the feet of pylons set in concrete foundations will be equipped with chairs bolted, calculated in accordance with ANSI / ASCE 10‐97, 1997 or any other approved standard. 13.6 Foundation concrete base For soil type 5 (low soil condition), a foundation in concrete base is recommended. 13.7 Pile Foundation Instead of installing such a foundation slab for very soft soils (soil type 5), the Contractor, subject to client consent, may decide that it would be more practical to install a pile foundation. In a very loose soil that would require thinking, for example, it might not be economical to install piles if only a few foundations are required. Instead, the Contractor may find it more convenient to install such a foundation slab, because the latter does not require the mobilization of pile driving equipment expensive and specialized. To ensure the stability of the towers, the stakes should be embedded in a concrete slab or rigid interconnected in an approved manner. The number and length of piles to darken depending on the bearing capacity of pile type used, which can be calculated from the bearing capacity of the live load measured. The piles will be tested. 13.8 Connecting the amounts of mast and anchor The connection of the tower foundations must be done through an angle of steel base. Angle of the base must have at least the same size as the amount to which it connects, and must be hot dipped galvanized the entire length. The angles of base must be provided with holes for connection to the amount and for grounding in

accordance with detailed drawings of towers. The anchoring angle steel base in the concrete foundations will be through a bolted connection All angles of base must be at least two chairs at the lower end. Angle of the base should be long enough to resist tearing. The spacing between support brackets must be at least twice the width of the wing of the shelf angle. The minimum distance from the upper support bracket below the level of concrete must be eight times the width of the leg of the angle support. 13.9 Materials 13.9.1 Concrete and Reinforcement Concrete must have a minimum strength of 30 MPa at 28 days. The reinforcement shall consist of twisted steel bars in accordance with the requirements of ASTM A615 with minimum yield strength of 400 N/mm2. The reinforcement bars must be made of steel with a high adhesion, with a resistance to deformation at least 400 MPa in accordance with the requirements of ASTM A615.

The metal will be held in place by means of brackets meeting and spacers annealed iron, so they can move during the implementation of concrete. The metal frame must be perfectly clean and shall show no trace of mortar or cement, concrete, dirt, grease or other contribution that may destroy or limit its binding to the concrete. The establishment of rebar must be made in accordance with Building Code Requirements for Reinforced Concrete (ACI 318) and the Manual of Standard Practice for Detailing Reinforced Concrete Structures (ACI 315), except where specified otherwise. 13.9.2 Sealing parts The parts to be sealed must be of the same class as the steel pylon with a minimum thickness of 6 mm. The galvanizing of these parts will meet the requirements of ASTM and specifically Standard A 123. 13.10 Detailed calculations, drawings and plant construction 13.10.1 Detailed calculations The detailed calculation notes for each type of foundation should be submitted to the engineer Client for approval. These calculations should include:

Calculations related to efforts in the foundations, the transfer of forces to the foundations of the towers and the rationale for allowable pressures and their distribution; Safety factors for the conditions of service and stability; Maximum forces transmitted into the concrete and steel reinforcement at all critical sections; Detailed calculations of rebar anchors, spacing, lengths of sealing, coating, covering, etc.. 13.10.2 Drawings factory and construction Details of each type of foundation should be submitted to the Engineer to the Owner for approval. Once approved, no changes can be made without the written permission of the Engineer to the Owner. The drawings of plant and construction must include at least: detailed plans of the foundations. The foundation dimensions will be indicated by including the data necessary for a correct implementation of these and provide details of the reinforcement; Detailed record of the concrete work, including the type, aggregate, mixing water, cement and admixtures, water / cement ratio, workability, mixing, transportation and installation, required and measured subsidence, etc..; Protection of the reinforcing steel against corrosion and insulation if any; Details of devices supporting angles of individual base for each type of tower foundation for the engineer's approval of the Employer; Details of the base plates and connections for each type of foundation.

14 TOPOGRAPHIC SURVEY AND DISTRIBUTION OF TOWERS 330 KV 14.1 General For purposes of bidding, the map of the proposed line drawing, drawings of plan view, longitudinal profile and a provisional list of distribution poles must be included in this specification. Details of the types of pylon extensions and their quantities are provided temporarily for the purpose of bidding to all bidders, and are shown in the Price Schedules according to the preliminary allocation of the tower made by Engineer to the Owner using the PLS‐CADD software. 14.2 Surveying preliminary The engineer of the project owner conducted a conventional alignment and a statement of the longitudinal profile of the line drawing that includes the preliminary allocation of the towers, and

anticipating the types of tower along the route. 14.3 Final check of the topographic survey and design confirmatory The topographical work must be performed by experienced personnel, supervised by a qualified surveyor. The skills of the survey crew and equipment proposed topographic must be submitted to the engineer's approval of the Employer, at least 15 days before work begins. It is the responsibility of the Contractor to do its long profile statement to confirm and / or correct the preliminary statement of the engineer of the Client and the provisional drawings of plan view and longitudinal profile while respecting the proposed alignment, the positions and types of towers, through the following main tasks: Check the vertical alignment of the line provided by the engineer to the Owner, correct, make additional surveys and update the file PLS‐CADD line drawing and review the distribution of poles within the rules of the art of engineering transmission line and ensuring compliance of the preliminary allocation specifications. Any proposed amendment must be justified by the Contractor and subject to the approval of the Engineer to the Owner; Check terrain elevation at the locations of towers in compliance with the minimum clearances relative to the ground; Check all distances between towers; Correct and update the profile along the line, the PLS‐CADD file and line drawing of the map until the final acceptance of work by the engineer of the Client; The Contractor remains solely responsible for the accuracy of the line design, and drawings that he produced. Redo / or correct drawings when requested by the Engineer to the Owner. ‐ Changes must be appropriately annotated on the drawings of plan view and longitudinal profile. Hard copies and electronic updates are submitted to the engineer in the formats prescribed above for approval. ; ‐ PLS‐CADD file must be submitted for approval; ‐ The scale must be 1:5000 horizontal and 1:500 vertical cuts should be drawn from left to right on the sheet.

14.4 Information required The Contractor shall identify, write a report and prepare the digital data formats as well as drawings of plan and profile retailers all information regarding the following items within a bandwidth of 68 m

along the center line of the statement: (centerline ± 34m). A topographic digital code assigned to each type of statement, for compatibility with PLS‐CADD software and to make the connection with the reports providing the following information. roads identification; Surface type; Class (primary, secondary, private, etc.). Crossing angle; Chaining the center line and limits of the road; Elevation of the highest point of the road surface. Paths and Trails Chaining and approximate angle of intersection; Elevation. Railways identification; Linking the center line and control limits; Crossing angle; Elevation of the top track. Transmission line and communication owner; voltage; Type of construction; Crossing angle; Chaining at the crossing point; Distance from the crossing point adjacent to the support structures; Elevation of the ground at the crossing point and adjacent support structures; Elevation of the upper cable at the crossing point and its attachment to the adjacent support structures;

Temperature at the time of measurement of elevations. fences Chaining and approximate angle of intersection; Ground elevation and height of the fence.

Property lines Chaining and approximate angle of intersection. Permanent buildings Chaining / offset distances and elevations of the corners; Height; Type of roof. Temporary buildings Show on plan and profile as long to establish the quantities and the clearance distance; Height. Ditches and streams Chaining, width and angle of approximately crossing elevation relative to the ground. Hills, farms and eruption Type; Chaining, off‐center distances and elevations of ground points; Height. Soil types Chaining positions where the soil type changes; Definition (normal soil, loose soil, clay, sand, rock, swamp, etc..). Gas lines and buried cables (if applicable) Record and indicate on the plan design all the information that may be useful or have an impact on the construction of the line. Future developments include: Type, name and size; Chaining and crossing angle; Ground elevation and depth of burial; Limit of the right and elevation above ground. 14.5 topographical drawings of the transmission line The Contractor shall provide a digital data format (PLS‐CADD file), including the drawings of plan and longitudinal profile and topographic surveys. These include all data and records must: Show all features such as hedges, fences, ditches, roads, railways, rivers, buildings, huts, transmission lines and communication conduit, service lines and existing property lines; Show the respective angles of intersection with the centerline surveying, chaining, elevations, height, etc.. For all features noted during the survey;

Indicate the type of soil if grown (including type), grassland, brush, bushes, etc.., And make special reference to abnormal conditions: swamp, loose soil, etc.., And other pertinent information, such as ground instability; Clearly show the chaining section.

14.6 Distribution of pylons 14.6.1 Drawings of vertical and horizontal distribution of pylons The Contractor shall submit for approval of the Engineer to the Owner the final drawings of plan view and longitudinal profile including the distribution of the towers. The drawings of plan view and longitudinal profile must include the positioning of the towers using the latest version of PLS‐CADD. The Contractor shall provide for exchanges and plans to bid the engineer of the Client using PLS‐CADD files with an appropriate numbering that identifies the issuer and the date of the change. At the very end of reviews, approvals and changes of plans, copies will be provided by the Contractor. Optimized repair pylons must meet the limits of the ranges and clearance requirements. The final optimization must be based on prices of towers and foundations submitted by the Contractor. For all towers, the Contractor shall ensure compliance of their distribution to all specification requirements, such as: The weight ranges and wind are not higher than those used for design; The scope weight is not less than the range of design; Specified clearances are met; Foundations and towers are not stressed beyond their design capacities specified. In addition, the following information must appear on the drawings of plan view and profile: On the longitudinal profile: identification number, type, extension, and chaining ground elevation for each position of the towers, span length and equivalent individual curves of the maximum deflection of the conductors and release curves; On the longitudinal profile for: identification number, type, extension, and chaining ground elevation for each position of the towers, span length and equivalent individual curves of the maximum deflection of the conductors and clearance curves; On the plan view: identification number to each pylon position, angle of the line and chaining cumulative for each angle of the line and anchor pylon.

14.6.2 Table of tower and equipment lists The Contractor shall prepare the table pylon for the entire length of the line and submit to the engineer to the Owner for approval before work begins. The table must include at least the following information: Individual litters and litters of control; Deflection angles of the line; Types of pylon; Leg extension and individual extensions; Details of line crossings (rivers, roads, ditches, transmission lines, etc.). Equations linking; Cartridge for comments, revisions and final numbers of structures; Wind and weight spans for each tower;

Models of insulator strings; Number of braces applicable; Number of shocks per pylon; Number of spacer dampers per litter; Number of packing (armor‐rods); Cable joints, fittings and all other necessary information. 14.6.3 Picketing pylon The picket tower must be performed by experienced personnel and supervised by a qualified surveyor. Phase will be to proceed with picket picket towers at the location indicated in the report produced by picket PLS‐CADD stamped by the engineer of the project owner and the brand "approved for construction." The towers will be located on the ground with stakes numbered. The Contractor shall locate all towers at the station shown on the plans and longitudinal profile. However, tolerances for positioning with respect to the axis of the line are: Longitudinal gap: 10 cm; Transverse deviation: 30 cm. We will conduct the survey cross‐sections of land to the tower site located on a slope in order to determine the exact lengths of uneven feet. These gradients will appear in the final book picket. The towers will be located by means of three posts, a picket line at the center of two stakes and management located 15 m in front and behind the stake center. The stake center is considered the

working point from which the line level and the tower site must be established. High mast angle, the Contractor stakes must also provide guidance along the bisector of the angle of deviation of the line. The Manufacturer will be responsible for the correct location of towers on the ground and the final length of span, whose exact values will be measured by his office and communicated to the engineer to the Owner.

15 STUDY OF SOIL 330 KV 15.1 General In order to confirm the nature of the various soils encountered along the route and the locations of new positions, the Contractor shall undertake geotechnical investigations that consist of: To drill exploration wells by means of exploration and / or boreholes. These boreholes will identify the main soil types over a distance of 10 km between two polls and where soil characteristics change significantly along the line route. The drill holes will generally be performed using dynamic penetration tests; To drilling locations, a visual contradiction, density measurements in situ sampling of soil samples for particle size analysis and water sampling for chemical analysis (aggressiveness) will be realized; The Contractor shall also, during the geotechnical subgrade, soil resistivity measurement using the methods and devices approved. All the results and interpretations of these studies should be compiled in a detailed report including: The location of boreholes, with the survey statement identifying the different soil strata encountered; The level of groundwater in accordance with ASTM D4750 and water testing in accordance with ASTM G51; Tests carried out on site and laboratory; The interpretation of results and recommendations on the bearing capacity of soil and rock, internal friction angle, specific weight, etc.., And the types of foundation recommended. 15.2 Soil Investigation The soil survey must be conducted to provide data required for proper selection of the type of footings and facilities grounding for each tower. The methods of investigation that will be used are listed below. When more than one method, the Contractor is free to choose the method that seems most suitable.

The cost of soil survey, the cost correlation tests to validate all study methods other than those specified and all costs relating to the tests required under section 15.3 the next to confirm the choice of foundations, must be included in the unit price of the estimate. In order to select the proper footings for each tower site, the results of each study site, values of N, Cu and others are used to identify the type of soil in place depending on the extent of soil data, such as classified in Section 13.3, Table 13.1. As foundations are subjected to pull‐out loads and compression, soil type must be set to 2.5 times the width of the foundation (or 3 m) below the level of foundation area planned and at least 1 m below the rock surface where bedrock is encountered.

Any method of investigation proposed by the Contractor and accepted by the Engineer to the Owner pursuant to Section 15.3, which does not require sampling of soil, should be supplemented by a description of soils in situ during excavation. Measurements of soil resistivity shall be in accordance with the method or method 4 points Van der Pauw of IEEE Std. 81. 15.3 Methods of soil surveys a) bedrock i. Drilling and rock sampling for identification and testing of resistance, if required. b) Granular Soils ii. The standard penetration test (SPT) in accordance with ASTM D1586‐. This method should always be supplemented by a description of soils in place. The soil can be identified, coarse or fine grained, based on identification procedures shown in Figure 7 Earth Manual, U.S. Department of the Interior, Bureau of Reclamation, Second Edition, 1974. If the ground to the required depth contains both coarse and fine grains, identification of the type of soil must be based on the type of which takes up more than 50% of that depth, and the average values of N obtained at each half meter in the borehole. iii. Static penetration tests (Dutch cone penetrometer) in accordance with the ASTM D3441. This method must be supplemented by a stratigraphic interpretation inferred from test results. iv. A combination of one of the methods 15.3b (i), 15.3b (ii) and any other method that the Contractor wishes to propose, in accordance with the following conditions:

Method 12.3 b (i) or 12.3 b (ii) should be used for at least 10 locations corner towers and / or anchor; The proposed method should be used with success in the practice or at least a proposed transmission line comparable. The proposal must be submitted with full technical documentation; In addition, the Contractor shall clearly demonstrate through field trials, the correlation between its proposal and one of the methods specified in 15.3b (i) or 3.15 b (ii). To this end, field trials should be performed by the Contractor at least 10 different locations. v. The proposed method will be applied only in the type of soil where the correlation was clearly demonstrated by the Contractor; vi. If the Contractor can not justify the correlation, it will use the method 15.3 b (I) or 15.3 b (ii) no additional cost; vii. For the method proposed is accepted, the correlation should not be any ambiguity. The correlation coefficient must be greater than 0.9; viii. If the dispersion is too large, the Contractor shall have the option to perform additional tests until an acceptable correlation occurs or set a lower correlation curve including 90% of correlation points for each soil type;

ix. The analysis methodology to establish the correlation should be submitted for approval. The following criteria must be considered: At least three points of correlation will be used for each study site; A three‐point correlation should correspond to the planned depth of drilling at the location of study site; The second point must match the projected drilling depth 1.5 m, but not at a depth less than 1 under the natural ground level; The third point must correspond to the proposed depth of the drill once more the width of the foundation, but not at a depth less than 1.5 under the natural ground level; A minimum of 10 points is required to establish the correlation curve for a given soil type. c) Land‐grained (cohesive) i. Static penetration tests (Dutch cone penetrometer) ii. vane Nilcon

15.4 Report on soil survey and selection of foundations For each tower location,] the Contractor shall prepare and submit the report on the study of the ground, describing the methods used, soil type chosen according to the results of the study, the extent of soils according to Section 13.3 , Table 13.1, and the foundation selected. In the event the Contractor and / or engineer the project owner consider that the results of the study soil are not sufficient to identify the soil in place and / or to select the proper foundations, the Contractor will do additional studies to complete the report with findings and conclusions required.

16 CLEANING THE WAY 330 KV The cleaning itself will consist of felling and stump removal of trees and other vegetation as well as the demolition and removal of debris across the width of the ROW or 34 m either side of the axis of the line of houses, sheds, barns and stables, etc.., The Contractor shall not remove any type of building or artifact made by hand, without the authorization of the Engineer to the Owner. Beyond the trench slaughter, any tree located 3 m in height equals the distance between the foot of the tree and the vertical plane passing through the driver nearest to be shot after getting the necessary permission of the Engineer to the Owner. No cleaning is required for trees, crops and other vegetation of commercial value including: The maximum height at maturity does not exceed 3 m within the ROW or the maximum height at maturity does not exceed 7 m outside of the ROW The destruction of food crops and annual plantation should be minimized by cutting one (1) meter away from the width of the center line of cultivated land. While cleaning a width exceeding one (1) meter cropland must be constructed only with written permission of the Engineer and perform as soon as possible after harvest. The locations of the towers, especially between the legs of the towers, all trees, bushes or other vegetation that is greater than 2 m should be cut as close to the ground. After cleaning, the stem should not exceed 10 cm above ground level. All removed material should be left stacked in cords, burned or disposed as directed by the Engineer to the Owner. Piles of brush, logs or accumulated material, must be located a sufficient distance from the locations of towers for the following construction operations are delayed in any way. Furthermore, the location of materials removed which can be burned, shall in no circumstances endanger the stored timber, logs retrieved, crops and other property on or off the ROW.

The incineration of materials removed must be made only with written permission of the Engineer to the Owner. The Contractor will be responsible for the firing, control and extinguishing of all lights and assume any compensation for damage suffered as a result of the incineration.

17 ACCESS ROADS 330 KV The construction of access roads, as far as possible, remains within the influence of the transmission line and the closest to the pylons. The Contractor shall obtain from landowners and local agencies involved all necessary access permits and those required for the construction of the transmission line within the way defined above. If problems occur, the Contractor shall attempt to resolve amicably with the parties involved. After preliminary approval of the Engineer to the Owner, in a preliminary engineering phase, the Contractor shall arrange all points of the line and access roads including owners and interested parts or skins Then prepare the access cards for a final agreement and approval of the Engineer to the Owner. The Contractor shall construct an access road along the common transmission line complete with all parts of roads connected to it. Work will include creating an access path to the different longitudinal line of pylons and access tracks cross to quickly reach the different points of the line from main roads. These tracks will be properly leveled and include a sufficient side clearance of vegetation. During construction, roads and paths, used in conjunction with landowners, must remain passable at all times. All openings in walls and fences of private property must be equipped with lockable doors or gates accessible by the Contractor and owners of the land. Roads and access tracks shall be equipped with light structures crossing seasonal streams (riffles, gabions, bridges, culverts buried with head protection nozzles) and remain accessible even in the rainy season. When the new access roads / maintenance of existing roads intersect, the Contractor shall visit to view the status of existing routes and familiarity with the required changes. It must verify the location of all access roads / existing maintenance prior to construction. The Contractor shall prepare and submit to the engineer's approval of the Contracting Authority, the relevant plans and details showing the sequence and method of constructing access roads / maintenance of the transmission line. The plans must include the equipment to be used, access routes from existing ones and detailed design of access roads / maintenance. All access roads / maintenance permanent and must be designed to withstand environmental conditions throughout the duration of the construction of the line. They will be ready on the date of completion. All access roads / maintenance permanent and must be built in areas where there is no risk of

landslide or erosion, unless the Contractor provides the necessary protection and preventive measures counteract the erosion so that the roads remain fully operational. Access roads / maintenance must have a gravel base of at least 200 mm. The Contractor shall provide unit rates to provide the gravel for access roads. The Contractor shall have the engineer's approval of the Contracting Authority to undertake the work.

The Contractor shall prevent excessive stripping near or in the vicinity of access roads / maintenance in order to stabilize slopes and prevent erosion caused by water from heavy rainfall. Temporary construction areas of deposit or storage must be approved by the Engineer to the Owner. All access roads / maintenance will be cleaned and free of debris, organic material or other deleterious materials and inadequate. All access roads / maintenance must be approved by the Engineer to the Owner. The Contractor shall take all necessary measures for access roads / maintenance shall include provisions for drainage of water due to heavy rainfall in tropical climates. The drainage water must be approved by the engineer.

18 mitigations ENVIRONMENTAL MEASURES 330 KV The implementation of measures to reduce the impact of construction on the environment (soils, rivers, agriculture), human population and wildlife must be planned for all construction operations. The major mitigation measures to be applied during construction of transmission lines will comply with the recommendations of the management plan and environmental and social, as appropriate, the relocation plan populations, as submitted by the Master of book. This will include are: Soil protection: Avoid construction in sensitive areas during the rainy season; Limit the number of lanes and movement of equipment in work areas; Limit intervention on soil vulnerable and susceptible to erosion by using appropriate equipment. Protection of streams: Provide a protective perimeter greater than 50 m around the shores of rivers susceptible to erosion. This restriction applies to all work. No structures will be erected inside this perimeter. Preserve the canopy of shrubs as well as stem and roots of trees cut in a radius of 50 m. Agriculture in the rainy season: Use existing roads to access the work area or move along the edges of cultivated fields. Once in the work area, indicating an access road. The work must be conducted so as not to damage crops. Check

with the farmer on the fields where traffic is permitted; Select uncultivated land or of lower quality for cable pulling, the space used must be minimized. Forest or bush: Clearly define the areas of cutting to reduce deforestation; Maintain vegetative cover to prevent wind erosion. Designing paths and detour, in cooperation with the competent authorities, for highways to be accessible to the public. Inhabited areas: Repair any damage caused to private property. At the end of construction, clean and restore order to what has been damaged; Any intervention in private property must be approved by the landowner. Respect, as much as possible, the work schedule presented to the local population. Ensure the safety of residents and spectators during the construction by taking appropriate measures (fence installation, supervision, etc.). Inform people about the dangers they face death if they try to remove portions of the pylon or climb on structures; During construction, provide archaeological monitoring of work areas, suspend all activities in the case of a discovery and immediately notify the Engineer;

Pay particular attention when the grip runs nearby towns and villages. contamination: Seal all boreholes at the end of construction; Take all necessary precautions to prevent spills when the supply of vehicles and fuel equipment. Prohibit the supply within a radius of 60 meters near a river, even if the tank is dry. Have on hand a supply of absorbent material and sealed container to use for recovery of oil residues and wastes in the case of a spill. Disposal of these wastes must be done on sites that meet the standards set by environmental authorities. Have a contingency plan for spills; Avoid driving machinery near potable water and other water sources. Identify a protection area. Crossing safety measures: Temporary protection facilities shall be designed and provided by the Contractor, for road crossings, pipeline and transmission lines, and generally wherever the protection of the public and other forced requires such measures. The proposed safety measures must be subject to the approval of the Engineer to the Owner and local authorities concerned.

19 CONSTRUCTI ON FOUNDATIONS 330 KV

19.1 Excavation The bottom of excavation must be stable, perfectly level in order to introduce the vertical flanges of the angles and obtain a correct surface. The depth of the excavation will be adjusted accordingly. If an excavation deeper than proved necessary, clean the concrete will be placed at the bottom of the excavation to bring it to the desired level. Excavations should be kept dry during installation of foundations. Whenever it is necessary or if the engineer of the Client's request, the Contractor shall again clear the accumulated material in excavations previously prepared. Operations of excavation, formwork, or pumping of water are part of the activities required for the construction of foundations and their cost is included in the tendered cost. The slopes of the trenches will be excavated suitable materials and temporary supports should be placed at appropriate locations for shoring and retaining walls. The Contractor shall take the necessary steps to ensure that all excavations remain open for as long as possible. It should also be careful to avoid accidents (occurring especially at night) resulting from excavations uncovered and without a safeguard. Security markup will be installed around the excavation before backfilling. 19.2 Confirmation of the soil and the foundation selected During the excavation, it is possible that the engineer of the Client and / or the Contractor considers that the soil in place does not meet the criteria established in the phase of the study and foundation selected is not really adequate. In this case, the Contractor shall, with a penetrometer or vane or any other method and / or instrument approved by the engineer of the Client, measure the soil bearing capacity in place to confirm the choice of foundation initially selected . In the case where the choice of foundation selected is confirmed, construction will progress as normal. If the initial choice can not be confirmed, the engineer of the project owner may request the use of a more appropriate foundation or redo the study of soil in the same method originally used. This new study will be conducted near the location of the pylon, in undisturbed soil, with no extra charges. 19.3 Backfill Backfilling of excavations shall be made after inspection and approval of the foundation by the engineer to the Owner. Entire embankment foundation pylons will be protected in an approved manner so that it is not caused by runoff. At the tower site, the surface must be tilted from the legs of the tower to allow for proper drainage. This work may not be an additional cost. The tops of foundations shall be located 30 cm above the natural ground and ending in a point with an appropriate slope to prevent water stagnation. In flood prone areas, tops of foundations shall be located 30 cm above the highest water level so that the metal parts are never submerged.

The excavated soil will be used as backfill if its use is appropriate. The rock and earth that it is not possible to compact must be cleared at the expense of the Contractor and replaced with fill material satisfactory to the Engineer to the Owner. The materials must be compacted to a density of 95% modified Proctor as specified in ASTM D698 (Method A).

Excavated material suitable as backfill shall be deposited in a suitable area. The surplus excavated material shall be loaded and transported in an approved disposal area. The backfill should be placed in layers with a thickness of approximately 20 cm, or on a suitable thickness to the maximum diameter of the materials. Each layer must be carefully compacted after wetting information if necessary. Unless otherwise directed by the engineer of the Client, materials with a diameter greater than 10 cm will not be tolerated. In the case where a normal consistency of concrete is used, the filling should not be performed within 7 days of casting. If an accelerator is used, backfill will be permitted after 8 hours of laying of concrete. 19.4 Installation of foundations Before any work, the Contractor will identify areas of support and axes digging lines to keep the exact direction defined by the picket books and get a perfectly correct position of each bracket. The Contractor shall provide plans showing the locations and levels of soil foundations. It will identify their positions on site if necessary. The Contractor shall be solely responsible for the accurate implantation of foundations. The setting of the bases should be done by an approved method (using templates or theodolites). The permissible tolerances on the adjustment of the bases will be: The distance between the top of the bases and the real axis alignment shall not exceed 15 cm; The distances between the tops of the bases should not be different from the values shown on the plans of making more than 1 cm. 19.4.1 Anchors Grout sealing The grout sealer will have the following characteristics: rapport‐ciment/eau expressed by weight "0.4; compressive strength after 28 days: not less than 30 MPa.

When meeting with cavities, loaded with sand grout will be used. This grout will present the required compressive strength is 30 MPa. The use of grout or expanding other topics will be subject to approval of the Engineer to the Owner. Execution of drilling The borehole diameter will range typically between 1.5 and 2 times the diameter of the anchor bar; Boreholes will have a length equal to that of the anchor bolt more 100 mm; All drilling will be blown with compressed air injected at the base of the hole before cementing; The drilled holes will be sealed at the top to start cementing operations.

Cementing and setting up bars Before implementation, the bars will be cleaned so as to be free of loose rust; The grout will be set up from the bottom drill using a metal tube; The bars, after installation, will be protected to prevent movement of the bar to the grout. Any bar remained mobile after taking will be uprooted. The hole will then be redrilled at the expense of the Contractor, and a new bar will be set up. 19.4.2 Concrete work The Contractor shall provide all materials and equipment necessary construction and transportation, labor and all other services and resources required to perform the work including: Dosing, mixing, transportation, manufacturing, consolidation and implementation; Formwork, stripping and surface finishing; Ask all reinforcing steel; sealed, if required, all items, if supplied and erected by himself or by others, in accordance with this specification and drawings. The cement is Portland cement in principle complies with the requirements of ASTM C150 or equivalent, except in the case of cement use in corrosive or reactive aggregates. Using a cement suitable for these special cases will be proposed by the Contractor to the Engineer to the Owner for approval. Cement may be delivered in bulk or in plastic bags clearly marked with the manufacturer's name,

and must be carefully stored in a hangar with a waterproof floor or in silos of approved pattern, generally located near the concrete plant . Every delivery of cement must be stored in a separate compartment of previous orders. In addition, the cement must be used in the order in which it was delivered. Any cement that has hardened or expired should not be used and must be removed from the site immediately. All aggregates shall conform to the requirements of ASTM C33 in all aspects and should be subject to appropriate tests. These tests will be by the Contractor at the start of work and, thereafter, whenever the Engineer to the Owner considers it necessary, particularly when potential change of source materials. No granules can be used without the approval of the Engineer to the Owner. Aggregates with inappropriate characteristics should not be used in the work and must be removed from the site immediately. The fine aggregate shall be classified within the limits specified in clause 6 of ASTM C33, while the coarse aggregate shall meet the requirements of Class 57 of Table 2 of ASTM C33. The tests to be performed periodically on each class of aggregate and corresponding frequency are given in ASTM C33. The Contractor shall provide evidence that the aggregates supplied unlikely to develop, with the cement proposed type reaction alkali‐silica or alkali‐carbonate, commonly known as "Alkali‐reaction". The Contractor shall also ensure that the sand will not contain organic matter.

The various fractions of fine and coarse aggregate must be stored separately and the mixture so as to avoid dust in the concrete. Aggregates shall be handled so that segregation is avoided. The proportions of fine and coarse aggregate must be adapted to the manufacture of a dense concrete proper handling, the proportions of cement containing water and appropriate. This proportion will be subject to the approval of the engineer. Water used in mixing concrete, mortar and grout should be clean and free of harmful quantities of oil, acid, alkali, salt, organic material and other substances that can damage the concrete and steel. The mortar cubes made with non‐potable water must be rated at 7 and 28 days no less than 90% of the strength of similar specimens made with potable water. For use, the Contractor shall provide for approval of any adjuvant, a record showing compatibility of the admixture with other components of concrete, their influence on the water content at constant workability, their effect on the consistency water content equal to, the start time and end of setting of cement paste, the mechanical strength of the resulting concrete. The tests will be made to the proposed optimal dosage and dosing half and double the optimal dosage. The water‐reducing admixtures, retarders and accelerators, shall conform to ASTM C494. The air‐entraining admixtures shall conform to ASTM C260. 19.4.3 Preparation of Concrete

A file will be submitted to the Engineer to the Owner showing that expected for consistency, the composition proposed by the Contractor and the means of construction, including concrete mixers, will produce a concrete meeting the specifications. No implementation of concrete will not begin until the approval of the Engineer to the Owner. Concrete shall conform to the requirements of ASTM C94. The Contractor shall submit the concrete compositions to the engineer to the Owner in sufficient time to avoid delaying the start of work, given the time needed to study events. Before the start of concreting and after he verified that the elements to be embedded in the concrete (reinforcement, sealing strips, anchors, etc..) And the forms are properly placed and secured and that all surfaces to be in contact with the concrete to be prepared. All concrete should be mixed with mixers. The type of mixer must be approved by the Engineer to the Owner. The concrete slump should be between 25 and 50 mm corresponding to a plastic consistency. When the maximum temperature exceed 30 ° C, special precautions must be taken to the satisfaction of the Engineer to the Owner, to cool the aggregates and mixing water and to maintain a water / cement ratio. These special arrangements can be: Watering and protection against solar radiation of gravel and pebbles; Watering formwork; Concrete protection during transport and the establishment against solar radiation. The concrete should not be performed when the maximum temperature exceed 45 ° C.

19.4.4 Formwork Panels and brackets bear without excessive deformation, the weight of concrete, frames and parts to be sealed and the forces due to the fall of the concrete, its tightening, shock moving equipment, personnel, changes temperature and climatic elements. Joints between panels are tight laitance and ensure satisfactory continuity of concrete surfaces. Before the introduction of concrete into the form, the surface casing must be no overlay mortar, grout, rust or other foreign material. Before any concrete, the surface casing must be oiled with a commercial oil that will not leave any marks on the concrete surface. The forms will not be moved or removed until the concrete has gained sufficient strength to support its own weight and construction loads that might apply. No stripping will be allowed earlier than 24 hours. 19.4.5 Establishment and consolidation of concrete

The foundations will be poured all at once. The times of concreting shall not be permitted, except with the consent of the Engineer to the Owner. After mixing, no addition of water during concreting will be tolerated. The concrete will be in place and tightened to prevent movement of formwork, reinforcement parts and sealed or sealed. The drop height of concrete shall not exceed 1.00 m. all concrete shall be compacted with vibrators. The number, frequency and power of pervibrators will be adequate at all times to obtain a quick and appropriate compacting the entire volume of the concrete to set up. Vibrators will be introduced vertically at regular intervals in the concrete to be compacted. If the layer being put in place covering a freshly compact layer, the vibrator will be lowered about 10 cm in the previous layer. The pervibrators be withdrawn slowly to avoid leaving a vacuum. The vibration will continue until the rise of air bubbles is substantially complete and will cease at the onset of milt or excess water. 19.4.6 Surface Finish Unless otherwise requested by the engineer of the project owner, the foundations will exceed the floor level of at least 30 cm at any point. Surfaces will be provided with slopes for drainage as provided on the plans or specified by the Engineer to the Owner. If the faces have at stripping some localized defects (pile of stones, accidentally exposed rebar) or irregularities, the Contractor shall notify the engineer of the Client before any patching so that these defects and irregularities are subject to a finding contradictory and review. If in the opinion of the Engineer to the Owner, the defect does not jeopardize the preservation of the quality of the structure, the Contractor will propose the necessary repairs before defects in surface finish. The patching of localized defects and holes left by formwork ties and will be made with cement mortar adhesive and added an additive to prevent shrinkage. Joint cracks, burrs and irregularities incompatible with the specified quality of siding will be repaired at the expense of the Contractor.

The Contractor will provide the finishing unformed surfaces upon completion of the concrete before the concrete hardens. The finish will be conducted at the simple rule, the vibrating screed, wood float, etc.., Or with any means to obtain the required quality. The rules guiding devices and their supports shall be subject to the approval of the Engineer to the Owner. 19.4.7 Concrete Cure The exposed surfaces of concrete will be kept moist for 7 days with one of the following methods:

Cover horizontal surfaces by a layer of sand, burlap or other absorbent constantly kept wet; Watered continuously maintaining a continuous flow of water on the concrete; After watering, cover with a waterproof membrane; Application of a curing compound. The use of a curing will be permitted for surfaces to receive new concrete without raising new and preparation for surfaces whose appearance could be damaged by the curing compound. The curing compound shall conform to ASTM C309 (Type 2), and their method of application must be approved by the Engineer to the Owner. Generally, two coats of curing should be applied to all surfaces of fresh concrete. The cure will begin as early as possible after the establishment of concrete for the parties Unformed and immediately after stripping for parts formed concrete. Costs for the supply and installation of all materials and products used for treatment of concrete should be included in the unit price for the foundations. 19.4.8 Tests on fresh and hardened concrete The Contractor shall provide all necessary equipment and labor and all other services and resources required to conduct field sampling of concrete. The test specimens shall be in accordance with ASTM C31. While testing compressive strength of hardened concrete should be performed according to ASTM C39. At each sampling (by a casting), the following tests will be performed: Four sets of three specimens for determining the compressive strength test of consistency (slump); A temperature measurement; Density of fresh concrete. Additional tests may be required by the Engineer to the Owner when the consistency of concrete varies significantly. The test will be deemed conclusive study and composition of concrete accepted if the following conditions are met: The average of five consistency results is within the range specified; Each measurement is greater than 0.85 fc.

19.5 Tolerances All foundations must be put in place precisely to their specific place, the allowable tolerances will be: The top of the bases should be in the same plane. The maximum difference in level between two bases must not exceed 3 mm. Fitting tolerances of the base of the tower between two bases: on the diagonal: ± 10 mm laterally to the tower: ± 5 mm Templates for positioning timing approved footings and bases shall be furnished by the Contractor and shall be used whenever necessary. The alignment gap, dimensions and size of structures in relation to established dimensions of alignment must be corrected. If not possible, structures shall be withdrawn and replaced by the Contractor. 19.6 Earthing of towers The Contractor shall provide and install equipment grounded in accordance with this specification section 11. All towers shall be grounded permanently and effectively.

20 FITTING THE TOWERS 330 KV The Contractor shall erect towers in accordance with detailed drawings and construction approved. The towers must be completed with all accessories in place including the assembly bolts, bolts tight‐levels safely before work and draw cable adjustment begins. No mounting bracket on its foundation shall not take place before a minimum period of 7 days after the establishment of concrete of the foundation, except in special engineering of the project owner. 20.1 Handling and Storage Warehouse and on site installation, all steel structures should be kept without direct contact with the ground, under conditions. Galvanized weapons materials will be handled and mounted so as to maintain a perfect surface and prevent deformation of the parts. The bars should not happen in the places of storages deformed. It will not be accepted as consequences of faulty loading or as a result of damage during transport or due to inadequate packaging, deformations of inflectional length. As for torsional deformations, they will not be accepted. Bolts and washers shall be packaged in drums equipped with all the information enabling the

identification of the material. The Contractor shall take all appropriate measures to prevent the elements of the towers stay in the mud, etc. .. All surface rust, salt or other corrosive material abroad, filed before or during installation of the towers must be removed without causing damage to surfaces. 20.2 Mounting Procedure The assembly will be carried out either in advance, that is to say, element by element with the aid of a lifting mast which is moved gradually into the barrel of the tower, or to the crane which allows the lifting tower previously assembled on the ground. During handling and installation, the Contractor will use the safeguards necessary to prevent damage to the tower elements, including the galvanizing of ferrous parts. The method of mounting the pylons will be subject to the approval of the Engineer to the Owner and will be such that at no time, no room is requested beyond its elastic limit. Joints and of the mast elements must be lifted in a manner not to be dragged on the ground. The Contractor shall take all necessary measures to prevent slippage of the elements of the tower one against the other. The contact surfaces of the flanges at the joints must be clean before assembly. All bars bent, twisted or bent during installation work must be corrected at the expense of Contractor. After editing and revision, the lack of verticality of tower shall not exceed 5 mm per meter, regardless of tower height.

20.3 Tightening bolts During installation of towers, the bolts are tightened to the torque wrench. After complete erection of the mast, the nuts ASTM A394 bolts shall be tightened according to Table 20‐1.

Table 20-1: Tightening bolts

Diameter of bolts (mm) Torque (kg - cm)

12 500 - 600 16 1,000 - 1,200 20 1,400 - 1,800

Torque values of bolts other than ASTM A394 shall be subject to approval of the Engineer to the Owner.

The wrenches used for tightening of bolts should be subject to the approval of the Engineer to the Owner. The use of any key that can deform the nut or damaging the galvanizing will not be permitted. If the Contractor does not use cons-nuts or washers, it must break the thread of the bolt to the surface of the nut after it has been tight. In addition to cutting the threads, bolts located below the anti-scaling device must be welded to nuts in order to prevent theft of the angles. The Contractor may propose wheel nuts 20.4 Defective Parts Weapons materials will be assembled according to the vendor installation drawings duly approved by the Engineer to the Owner. No faulty hardware will be implemented. If manufacturing defects in the steel parts are discovered, the Contractor shall notify the Engineer of the Employer will determine whether these defects can be corrected on site or if parts must be returned to the manufacturer for correction or replacement at the expense of the Contractor. No additional fitting, not shown on circuit diagrams, shall be permitted. The bore holes for the correction of errors plant will not be allowed. 20.5 Parts damaged The Contractor is liable for damages that would be caused to parts up to take possession of the line, it will be required to repair such damage at its expense by corrections if the engineer of the project owner's permission, or by replacement of rejected parts with identical parts original. All parts of the towers should be clean and straight. And can not be mounted parts whose spire exceeds + 2/1000 of the distance between nodes for parts compressed or + 6/1000 for parts strained.

20.6 Damage to the galvanizing It must at all costs avoid damaging the galvanizing because its repair will not ever equivalent to the original hot-dip galvanizing. In cases of unavoidable and accidental damage, galvanizing can be repaired as follows. For areas of the elements in place of towers that have undergone a slight alteration of the zinc coating during assembly, a restoration will be authorized by editing using a zinc rich paint approved. These refinements will be made as follows: Removing rust with sandpaper or wire brush areas where corrosion appears and dandruff zinc nonadherent. Cleaning solvent and wipe. Treatment with phosphoric acid will be banned; Application of one or two coats of paint above (minimum thickness of dry film: 100 microns and% zinc "85) to be implemented according to the supplier's instructions.

The holes drilled on site will be painted as described above prior to assembly of components. The parts would be seriously damaged galvanizing shall be rejected. 20.7 Signs of towers and accessories The Contractor shall install warning signs and anti-climbing devices on all towers, plate tracking helicopter must be installed on the corner towers and all towers such as 10 specified in the drawings and approved by Engineer to the Owner. 20.8 Special fittings for the transposition The transposition of phases will be conducted in accordance with plan No. 016742 transposition - 5100-43-DD-0018. There must be transpositions on line 330 kV Sakété - Togo-Benin border. The exact points of transposition will be determined by the Contractor. All special fittings may be required will be provided in accordance with the approved design. `The Contractor shall tender all special fittings and accessories for any transposition along the line. The burgundy price was adjusted accordingly.

21 INSTALLING THE CHAINS OF INSULATORS AND ACCESSORIES 330 KV 21.1 Insulators Insulators shall be packed in strong wooden boxes and must be delivered on site in their original containers. They should not be unwrapped until ready to use. The insulator strings and accessories shall be assembled according to the assembly drawings of the supplier duly approved by the Engineer to the Owner. No faulty hardware will be implemented. No isolator shall be mounted in chains if its surface has the slightest sparkle. All insulators shall be free of any trace of mud or other during assembly. When installing and just before the hanging, the insulators should be cleaned thoroughly. Cotter pins must be properly placed and will be free from any damage or defect. 21.2 Suspension Accessories and anchoring Equipment and anchors for suspended drivers, steel cables and covered with aluminum OPGW will be handled and mounted so as to maintain a perfect surface and prevent deformation of parts during assembly. All accessories must be installed in the position shown on assembly drawings. All nuts, cons‐nuts, washers, cotter pins, etc. for accessories, shall be installed in the correct order. Checking the consistency of the parts with assemblies provided is appropriate. No additional parts not shown on assembly drawings shall be permitted without the written approval of the Engineer to the Owner.

All accessories must be judged poorly assembled or assembled again changed by the Contractor's expense. The Contractor is fully responsible for any damage caused by the improper installation. 21.3 Fittings anchor and compression type joints for conductor Joints and clamps to compression type shall be installed according to manufacturer's recommendations. The Contractor shall submit the instructions and the detailed installation procedure for the approval of the Engineer to the Owner. The number of joints and their location on the bearing must be approved by the engineer Client. Outside ends of the lengths on reels, the use of seals will be avoided. There will be no joints in crossing roads, railroads, transmission lines, rivers, etc.. The distance between the joints of a single driver should be no lower than 100 m. The joints shall not be installed within 15 m of suspension clamps, or attached to less than 50 m of wedgelock. The Contractor shall maintain a register of all joints and clamps to the location, type and installation date of each assembly. 4.21 anchoring fittings compression type and seals to the shield wire of aluminum‐coated steel Joints and clamps to the compression type for guard cable steel coated with aluminum must also be installed in accordance with the requirements of Section 21.3. The procedure is that recommended by the manufacturer.

21.5 Repair Sleeves In the event of cable damage, the Contractor shall submit a repair method to engineer the project owner, this method involves the installation of a normal joint or repair, or cut some lengths of cables. To this end, the shells of repair must be used to repair minor damage to driver when not more than two son of the outer layer are broken. These shells will also be used to repair the damage of the aluminum coating of the cable guard and should not be used where steel portion is damaged or broken. The use of shell repair must be very limited and can be done only with the written approval of the Engineer to the Owner. 21.6 linings protection (Armor‐rods) Protective linings must be installed according to manufacturer's recommendations.

The protective lining shall be placed in the center of the suspension clamp with a tolerance of 50 mm. The contact surfaces must be clean and free from harmful materials prior to installation. 21.7 Vibration dampers The vibration dampers must be installed immediately after the draw cables. The shock absorbers must be located, installed and tightened, as recommended by the manufacturer. Before installation, all buffers should be thoroughly cleaned and inspected. No permanent deformation of the springs or clips are allowed. 21.8 Spacer Dampers The spacer dampers must be installed according to manufacturer's instructions. The spacing of the spacer dampers must be submitted to the Engineer to the Owner for approval. Installation can be done from mobile carts attached to the driver. Carts and all accessories must be supplied by the Contractor. The method of installation, drawings and descriptive information carts will be subject to the approval of the Engineer to the Owner. The spacer dampers should be installed immediately after the process of clamping the conductors has been completed.

22 KV 330 Conductor unwinding 22.1 General The grounding of all towers must be made permanent and effective. Also the resistance of grounding requirements must be met before starting the work of unwinding of drivers. The Contractor shall place the cables and adjusting the arrow conductors in accordance with IEEE Std. 524 and manufacturer's recommendations, taking into account the specifications and drawings. Drivers must be taken simultaneously using only one line drawing. After adjustment of the boom, the attachment points must be marked on each conductor in a manner satisfactory to the engineer to the Owner. Insulator assemblies shall be tied to drivers in points scored on the conductors. Particular attention should be paid during handling and storage to prevent abrasion or other damage to the cables. Protection drums during storage, handling and transport will be such that at the time of the draw, the drums do not damage the cables and did no damage. It is expressly specified that the cables will be maintained consistently above the ground away from water, dust, mud, metal surfaces and other obstructions, and by intermediate supports of proper height, properly placed in sufficient numbers.

The wooden slats and other protection covering the cables must be removed to the site and the outer layer of each drum should be examined by the Contractor in the presence of the engineer of the Client to ensure that the cables are in good state and that there is no nails, staples or other sharp objects that may damage the cables during the work of peeling. 22.2 Unwinding cables The peeling and pulling cables will be made under tension using a winch and a brake, which can tighten the cable and ensures that the driver does not touch the ground and will not being injured by contact with sharp edges. The Contractor shall submit, for approval of the Engineer to the Owner a complete and detailed description of equipment and procedures for unwinding cable installation and adjustment of the arrow, it provides to use. Later than two months before the start of construction of cable installation, the Contractor shall submit a general plan to ask the engineer for approval. The plan must describe the work schedule proposed by the Contractor, the peeling method, the method of temporary bracing, the complete list of facilities, the media and he plans to use skilled personnel required for the execution of works. In addition, no later than two weeks before the start of the installation work of cables for each district placement, the Contractor shall submit to the engineer to the Owner for approval, details of each canton is routed, positions of the reels, the diameter and shape of the groove of the pulleys of unwinding, the tensioning to be used for the unwinding, the clamps and drawing the exact lengths of the cables. At each site of unwinding, the Contractor shall use groups of six reels of conductor of the same length. It is very important that these cables are installed in the same section line. Therefore, the Contractor shall take all necessary precautions to prevent the mixing of groups during handling and installation.

Unless otherwise approved by the engineer of the project owner, the process of unwinding and pulling cables should be strictly in accordance with recommendations of manufacturer of equipment for unwinding. Only specially trained linemen, who are well trained in handling and operation of such equipment must be used. Reliable means of instantaneous communication must be available between the teams pulling and braking, and between these teams and all observation posts that can be placed along the Township poses. The equipment peeling must be adjusted to avoid causing excessive vertical loads on the towers. The distance to the nearest pylon which the cables must be installed must be selected in relation to the pulleys and the equipment used peeling. The distance of the tower at pulling equipment is at least 4 times the height of clashes points of the pulleys. A reasonable tolerance must be respected to avoid

accidental overvoltage cables. The pulleys are peeling multiple ball bearing design acceptable to the unwinding of two conductors simultaneously. Their effective diameter will be chosen accordingly with the diameter of the cable to the phase conductor and the shield wires. The engineer of the Contracting Authority reserves the right to inspect and reject all pulleys peeling that his opinion is not functional or can damage the driver or have a detrimental effect on the sag of conductor. Block hooks shall be of uniform length so that drivers will be maintained at the same height as the suspension clamps on which they are hung. At the end of adjustment operations, drivers will then be cut and placed on a proper course pinces.Pour work, pulleys peeling must be inspected daily. The use of defective blocks will not be permitted. At any time during unwinding, the cables must be kept constantly above the ground (not less than 2 m), metal finishing and other obstacles. If it becomes inevitable to lower the ground conductor, a suitable non‐metallic coating must be placed below. Any portion of a cable having any injury will be eliminated. Unwinding tension shall not, at any time exceed the voltage adjustment of the arrow corresponding to more than 20%. The Contractor shall ensure that the clips drawing or other hauling device is an approved model which does not damage or bend the cables improperly during their unwinding. If for any reason, unwinding operations in progress must be stopped, drivers must be left in the blocks unwinding, but their power must be minimized. If the interruption lasts longer than one day, then the drivers will be more grounded as a safety measure. If the interruption lasts longer than 40 hours or if a stormy weather is in effect, the cables should be inspected carefully to assess the damage. Such inspection is particularly true ellipsis where the cables are left in the pulley grooves. During pulling operations and control, cables and equipment will be grounded to avoid any accident by lightning. The Contractor shall take necessary measures for the temporary bracing of the towers, when required. Appropriate plates (removable) must be installed on towers to attach temporary guys. This type of operation should be kept to a minimum.

22.03 Draw and setting The operations of drawing and under mechanical tension adjustment will be conducted so that the towers will never be overloaded. To this end, it will be for the Contractor to produce all the necessary information, in particular tables maximal efforts eligible for the towers and the load cases considered.

For a given range, tables and arrows voltage must display the arrow for temperatures between ‐5 ° C and 60 ° C in increments of 5 ° C. Temperature setting arrow should be read from a thermometer inserted into the inner layers of the bare conductor. The driver must be suspended in the air with no jacket and no less than 3 m above the ground. Temperature readings will be taken only after 20 minutes of exposure. Moreover, the voltage applied to the cables should not exceed the maximum voltage shown in the tables as laying the cable is subjected to phenomena such as creep under the effect of stresses to which it is submitted after installation. The Contractor shall verify the arrow of each driver with a range having an average length approximate (functionally equivalent). The arrows should also be verified in all ranges exceeding 600 meters and scopes of angle towers and anti‐cascade. The intermediate ranges must be inspected by an arrow uniform. If the Engineer to the Owner wishes to verify the arrow to any position, the Contractor shall provide assistance, equipment and qualified personnel. The townships of installation shall be limited to allow a satisfactory fit. They should not exceed 15 litters or 6 km (the length of the smaller of the two). In each setting, drivers will be treated as uniformly as possible to what they later the same creep. To this end, the setting must be completed in one day (24 hours) and for all drivers of a given portion as much as possible. The control voltage conductors should be similar between the cantons of poses for the insulator strings provide an appropriate position. The Contractor shall maintain a register showing details of the adjustment arrows driver installation for each township. 22.4 Setting clamp After completing the adjustment operations and drawing, drivers must be on clip accordance with approved procedures. The clamps to be of proper length to ensure the power conductors without bending or strand slippage and without relative sliding of the steel core. To allow future adjustments possible, about half of the usable length of turnbuckles should remain after the anchor. Setting clamp must be made within 48 hours after the end of the adjustment of the arrow, unless otherwise approved, but the cables must remain in the pulleys peeling for a minimum of two (2) hours before are put on the clip begins. The cable ends will be thoroughly cleaned before introduction into the joints or clamps and will include cleaned of fat. To compress the sleeves will be filled with special paste, according to the

manufacturer's instructions. After compression, the anchor clamps and joints should be as straight as possible.

The joint surfaces between the leg of the clamp body and the neck anchor death must be clean and flat. To this end, the two contact surfaces are brushed in order to remove the alumina layer and coated with grease or paste appropriate contact advised by fitting manufacturer. Protective linings must be installed according to manufacturer's instructions. They should be centered within ± 5 cm. Once installed, the difference between the ends of rods shall not exceed 5 mm. The clamps are tightened to the manufacturer's instructions. Immediately after the clamp on, the tolerance on the arrow setting the driver should not exceed 2% provided that the clearance from the ground specified is achieved. The suspension insulator strings must be vertical; the tolerance on the arrow adjustment shall not exceed 30 mm. 22.5 Communications During the work of peeling, the Contractor shall maintain good communication between staff at all times ensure that it clamps drawing or other hauling device does not damage or bend the cables improperly during their unwinding. The staff that monitors the clips drawing must have reliable communications with that assigned to the position of unwinding. The Contractor shall provide a second communication system in case the first system failure occurs.

23 CABLE GUARD unwinding of 330 KV 23.1 General This specification establishes the installation settings specific to the conductor. The following specifications supplement the requirements of Section 21. 23.2 veneer The ground wire must be installed over the entire length of the transmission line. Tools and equipment used to install the ground wire must be similar to those specified for the driver. Tables for laying the ground wire must be included with those drivers. The ground wire must be installed before the drivers. The method of unwinding must be the same as that used for the conductors. The tools and equipment for the peeling of the shield wire must be grounded as those of drivers. Precautions to prevent abrasion or other damage to the cable guard during handling and storage must be taken. A damaged cable must be replaced by the Contractor to the satisfaction of the Engineer to the Owner.

23.03 Draw and setting The development of guard cable sag will be done before the driver according to the arrow and voltage tables (Tables installation) provided by the Contractor. The draw and adjustment of the shield wire must follow the requirements specified for the driver. 23.4 Setting clamp after adjusting the cable sag guard, setting clip must be performed in the same manner as that specified for the driver.

Unwinding of 24 CABLE GUARD OPTIC (OPGW) 330 KV 24.1 General This section defines the installation requirements that are specific to OPGW, they are added to those presented in Section 21. Care must be taken to avoid damage to the OPGW during handling operations and peeling. The Contractor shall ensure that the clips drawing or other hauling device is an approved model which does not damage or bend the cables improperly during their unwinding. Like other drivers, use the shackles of conductors or tongs drawing that prevent communication cables for torsional effects during the unwinding. The OPGW drums should always be transported and handled in a vertical position. Under no circumstances should they be placed flat or side. 24.2 Installing The OPGW must be installed before the drivers. The Contractor shall submit, for approval of the Engineer to the Owner, the complete and detailed description of the equipment and the peeling procedure of installation and adjustment of the arrow. This procedure must be in accordance with the manufacturer of OPGW. The diameter and shape of the groove pulleys peeling and brakeman used to unwinding of cable optical ground must comply with the requirements of OPGW manufacturer. During installation, the Contractor shall prevent communication, the effects of torsion in OPGW demand. The Contractor will install a non‐rotating system between the puller cable optical ground and swivel. This system shall be equipped with non‐rotating counterweight having a mass sufficient to prevent rotation of OPGW during peeling. The pliers and pulling hauling device must not damage or bend the cables. The use of frogs is prohibited parallel jaws to pull the cable of optical ground. When setting the anchor and the OPGW, use tongs to draw that meets the requirements of the manufacturer of OPGW. The OPGW should not be cut with scissors ratchet or other type of tools that can compress the son

of aluminum. The following values must be followed to prevent damage to the OPGW: Minimum diameter of the pulley peeling 40 x D (OPGW) Recommended diameter of the pulley peeling 70 x D (OPGW) Radius of curvature continuous (no voltage) 15 x D (OPGW) Unwinding voltage 20% of the maximum breaking strength of the OPGW 24.03 Draw and setting The draw and the OPGW cable adjustment will be made in accordance with arrow and voltage tables (Tables installation) provided by the Contractor. A pair of contact surfaces must be used to smooth the circulation of the OPGW to prevent its damage, and in particular the compression of the son of aluminum.

24.4 Anchoring and clamp set The sleeves of the OPGW anchor must be installed on spans and pylons anchoring limit. They should also be used to tower angle when the angle is too large when the use of suspension clamps is not recommended. The suspension clamps are normally used for suspension towers. The OPGW should not remain in the pulleys peeling more than 48 hours after adjustment of the arrow. Drawing the clamps will be parallel jaw‐type and smooth contact surfaces, they will be of proper length to ensure the power cable without folding. The setting of the OPGW clamp will be effected by means of a trim protection attached to the structure. The vibration dampers must be placed on the OPGW immediately after a crush. 24.5 Points of connection The connection points must be located at the beginning and the end of each drum OPGW. After adjustment of the arrow and when handling and fixing of the OPGW, descending the tower to be respected over the minimum radius of curvature of the OPGW prescribed by the manufacturer. Immediately after turning on clamp, it will set the OPGW along a main member. The clamps will be installed just down from the top of the tower and standard installation of splice case. The maximum distance between two consecutive down clamps must be between 1.5 to 2.5 m. At the foot of the tower, the OPGW be cut in order to maintain a ground cable length of about 20 m. We cut the layers of metal son. However, the stripped ends of OPGW must be sealed to prevent new mold, the distance from the end which is recommended by the manufacturer of the splice closure.

Groups each of OPGW fiber will be inserted into the slots in the connector rings will be installed, and fiber optics will be combined. Everything must be done according to the manufacturer's instructions splice enclosure. The housing and the bottom loop of OPGW located above the anti‐climbing. 24.6 Connecting the optical fibers The connection of the optical fibers must be by fusion. The withdrawal of the ducts and fiber coating stripping, splitting and merging must be performed by a qualified team, sheltered from the weather, with automatic tools and equipment, well adjusted and calibrated to fiber type Optical to be connected. The maximum loss for a splice fusion splicing must be less than 0.15 dB. Any merger with a loss at splices above 0.08 dB shall be resumed. The value of the loss of a fusion splicer is the average of measurements taken in both directions. All connections must be protected using a heat shrink tubing with integrated reinforcement, or any other material / process having equivalent protection. An additional length of 1.5 m shall be provided on each side of the connector, and safely stored in the junction box.

CLEANING 25, FINAL INSPECTION AND TESTS 330 KV 25.1 General At the end of the work and before commissioning, the Contractor shall immediately clean up the site and repair damage and to the performance of electrical tests in accordance with the specifications before receiving operational facilities. 25.2 Cleaning Unless the Client agrees to keep some free buildings or facilities that the Contractor would be erected at the site of general facilities, or other points of the site, all buildings, all facilities, all materials must be removed, dismantled, destroyed, if necessary. The sites should be made clear of all structures, platform of concrete or metal. The rehabilitation of the premises shall be conducted before final acceptance. Restoration sites include: Rehabilitation of irrigation facilities to obtain a plot looks similar to the one he had before the arrival of Contractor; Restoration of natural drainage in areas where temporary facilities were erected for construction purposes; Repair of all fences, gates, etc.., Which were damaged during construction;

Rehabilitation of access roads. 3.25 Final Inspection At the end of the work and in the presence of the Engineer to the Owner will be the final inspection of the line, during this inspection, the Contractor shall immediately remedy all defects, and in particular ensure that: Backfilling excavations, grading around the foundation, drainage requirements for sloping land, the disposal of surpluses of land, etc. were completed; At the top of the concrete foundations above the natural ground is carefully done to avoid water stagnation; The exact direction of the line drawing and a perfectly correct position of each tower; Accessories towers, signs, anti‐climbing, etc.. are complete and properly adjusted; The perfect alignment of joints without the presence of additional fitting; Repair by painting suffered minor damage to the galvanizing; The insulators are free from visible foreign matter, and all units have integrity; The phase conductors and shield wires are erected according to plans, setting clip of the cables is performed correctly, the various accessories (armor‐rods, vibration dampers, spheres markup, braces, suspenders, etc..) Are place and splice boxes are installed at specified locations;

All blocks unwinding of driver, hooks and other equipment were removed from the line; All bolts, nuts, washers and pins, etc. are properly installed and tightened; The phase conductors and ground wires are clean and show no damage, etc.. The maximum tension in all cables is consistent with the values shown in Tables installation and clearances are met; Access roads / maintenance are completed correctly; The hold is empty of obstacles (trees, buildings, etc.). The clamping pieces of ground are placed correctly. 25.4 Testing off and commissioning The Contractor shall organize and carry out all electrical tests to demonstrate that the transmission line is ready for commissioning. Electrical tests include without limitation:

Measurement of the phase balance; Measurement of insulation; Measuring the resistance of the line current; Measuring the resistance of the AC line; Measuring the reactance and the impedance of service; Measuring the reactance of the impedance phase and earth; Direct measure of capacity; Measuring the resistance of the earth of each tower; Measurement of zero‐sequence capacitance. Field tests required by the Engineer for the shield wire to fiber optics include, but are not limited to the following tests: i. Requirement of loss along the optical fiber (weakening) The Contractor shall measure the attenuation loss per length along the line. The final measures of this test must be performed after the commissioning of the line. This measurement on site must be comparable to the value initially measured at the factory and must be less than the maximum specified in the table of technical characteristics of OPGW "average losses per km." ii. Losses at splices The Contractor shall measure the maximum loss at splices for all connection points. This measurement on site must be comparable to the value initially measured at the factory and must be less than the maximum specified in the table of technical characteristics of OPGW "maximum loss at splices." For a given section, the average loss for all connection points must not exceed the value specified in the table of technical characteristics of OPGW "average loss at splices." The results of these tests shall be recorded and referenced to the number of pylon.

Qualified personnel must be present during testing when the line is put into service so that it can provide assistance and perform any corrective actions with respect to the performance of the transmission line. All tests must be performed in the presence of the Engineer to the Owner. The Contractor shall provide all tools, facilities and equipment and transportation, skilled labor and all other services and resources required to conduct the tests. 26 SECTION 3 ‐ WORK TO 161 KV