Edo Wms Cor Cns Int Xxx 016 686 885 Rev 0 Work Method Statement for Soil

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A 16.05.2016 İLK YAYINLANIŞ E.D

Rev.No.

Date DescriptionPREPARED CHECKED CONTR. BY ONAY EDOPEC

ORIGINATOR Published by

EDOPEC ENERJİ PETROL MÜHENDİSLİK SANAYİİ VE TİCARET

LİMİTED ŞİRKETİ

Head OfficePalmıye Mah. Adnan Menderes

Bulvarı 1225 Sokak.Oktay

SıtesıNo: 6 Kat 8 D:17 PK-

33100 Yenısehır –Mersın – TurkeyP:+90 324 3260595

F:+90 324 3260596

www.edopec.com.

[email protected]

Document Title

WORK METHOD STATEMENT FOR SOIL RESISTIVITY SURVEY FORTEMPORARY CATHODIC PROTECTION (TCP)

Document No.

EDO WMS COR CNS INT XXX 016 686 885 Rev A Co.Org.Cod

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TS EN ISO 9001:2008 ;TS EN ISO 14001:2005TS OHSAS 18001:2008 ; Certificate No: 764/01/02/03

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Project: EDOPEC ENERJİ Proj. Identification:

Document Title:ORK METHOD STATEMENT FOR SOIL RESISTIVITY SURVEY FOR

TEMPORARY CATHODIC PROTECTION (TCP)Document No.:

EDO-WMS-COR-CNS-INT-XXX-016-686-885-REV-0-WORKMETHOD STATEMENT FOR SOIL RESISTIVITY SURVEY FORTEMPORARY CATHODIC PROTECTION (TCP)

Revision: A Date: 16.05.2016

TABLE OF CONTENTS

1 EXECUTIVE SUMMARY ................................................................................................. 3

2 SCOPE AND PURPOSE ................................................................................................. 4

2.1 Purpose.................................................................................................................................. 4

2.2 Scope ..................................................................................................................................... 4

3 DEFINITIONS AND ABBREVIATIONS........................................................................... 5

4 CODES STANDARDS AND REFERANCES .................................................................. 6

5

DESCRIPTION OF THE PIPELINE SYSTEM ................................................................. 8

6 SOIL RESISTIVITY SURVEY.......................................................................................... 9

6.1 General................................................................................................................................... 9

6.2 Measuring Equipment ........................................................................................................... 9

6.3

Procedure

............................................................................................................................ 10

7 AUTHORITY AND PERMITS REQUIREMENTS

........................................................... 12

8 LAND ACQUISITION REQUIREMENTS ....................................................................... 13

9 H&S REQUIREMENTS .............................................................................................. 14

10 ENVIRONMENT ASSESSMENT ................................................................................ 15

11 COMMUNITY RELATIONS ASSESSEMENTS .......................................................... 16

12

SECURITY ASSESSEMENT

...................................................................................... 17

13 QA / QC ...................................................................................................................... 18




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1 EXECUTIVE SUMMARY

Matcor Inc. with the assistance of Ergil Makina provides engineering, materials andinstallation, supervision for cathodic protection system of Baku-Tbilisi-Ceyhan CrudeOil Pipeline Ceyhan Marine Terminal Onshore and Offshore Project. This workmethod statement summarizes the methods and the procedures that Matcor Inc. willbe using to obtain the most accurate soil resistivity measurements to engineerCeyhan Terminal’s Load Lines temporary cathodic protection (TCP) groundbeds.




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2 SCOPE AND PURPOSE

2.1 Purpose

This work method statement describes methods and procedures that will be used insoil resistivity survey of the Load Lines of the Baku-Tbilisi-Ceyhan Crude OilPipeline Project for the TCP System.

2.2 Scope

This Work Method Statement covers the resurvey and verify the soil resistivitymeasurements along the Load Lines route at approximately every 100 meters.

Resurvey along the pipeline route to assess the conductivity of the soil will becarried out to ensure continues flow and evenly distribution of current fromcathodic protection transformer/rectifier units. This soil resistivity survey willprovide information in determining the temporary cathodic protection (TCP)current requirements along the pipeline. This data will be used to verify and, ifnecessary, modify the previous consultant’s test results. Any change to projectspecifications if made, will be submitted to the Employer with supportivedocumentation.




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3 DEFINITIONS AND ABBREVIATIONS

ANSI American National Standards Institute

API American Petroleum Institute

ASTM American Society for Testing and Materials

HSE Health, Safety and Environmental

IEC International Electro technical Commission

IEEE Institute of Electrical and Electronics Engineers

IP Institute of Petroleum

ISO International Standards Organisation

NACE National Association of Corrosion Engineers

CP Cathodic Protection

TCP Temporary Cathodic Protection

LL Loading Line

BTC Baku-Tbilisi-Ceyhan Crude Oil Pipeline

HSE Health, Safety and Environmental

QA Quality Assurance




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4 CODES STANDARDS AND REFERANCES

ANSI / IEEE C2-93 National Electrical Safety Code

ANSI / IEEE C62.11 Standard for Metal-Oxide Surge Arrestors for Alternating Current Power Circuits

API RP 540 Electrical Installations in Petroleum ProcessingPlants

API RP 550 Manual on Installation of Refinery Instrumentationand Control Systems

API 1102 Steel Pipelines Crossing Railroads and Highways

ASTM A123 Standard Specification for Zinc (Hot DipGalvanised) Coatings on Iron and Steel Products

ASTM A153/A153M Standard Specification for Zinc Coating (Hot-Dip)on Iron and Steel Hardware

BS 8800, 1996 Guide to Occupational Health and SafetyManagement Systems

ISO 1800, 1996 Safety Management Systems

ISO 9000: 1994

ISO 9004-1 1994

ISO 14001, 1996 Environmental Management Systems

IEEE 81 Guide for Measuring Earth Resistivity, GroundImpedance, and Earth Surface Potentials of aGrounded System

IP Code Part 3 Model Code of Safe Practice in the PetroleumIndustry: Refining

IEC 529 Degrees of Protection Provided by Enclosures (IP- Code)

IEC 99-2 Lighting Arrestors Part 2: Expulsion-Type Lightning Arrestors First Edition (withdrawn)

IEC 146-1 Semi-Conductor Converters-General Requirementsand Line Commuted Converters




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IEC 227-1 to 5 Polyvinyl Chloride Insulated Cables, Rated Voltageup to and including 450/750V

IEC 269-1 Low Voltage Fuses Part 1: General Requirements,

Second Edition

IEC 76-3 Insulation levels and dielectric tests

NACE RP0169 Control of External Corrosion on Underground or Submerged Metallic Piping Systems

NACE RP0177 Mitigation of Alternating Current and LighteningEffects on Metallic Structures and CorrosionControl Systems

NACE RP0190 External Protective Coatings for Joints, Fittings,and Valves on Metallic Underground or SubmergedPipelines and Piping Systems

NACE RP0274 High Voltage Electrical Inspection of PipelineCoating Prior to Installation

NACE RP0286 The Electrical Isolation of Cathodically ProtectedPipelines

NACE RP0572 Design, Installation, Operation and Maintenance of

Impressed Current Deep Ground Beds

NACE RP0792 Standard Format for Computerised Close InternalSurvey Data

NACE RP0572 Design, Installation, Operation and Maintenance ofImpressed Current Deep Groundbeds

KOÇ, T., “Elektrokimya”, Palme Press, Ankara, 1999

YALÇIN, H., KOÇ, T., “Katodik Koruma”, Palme Press, Ankara, 1998

YALÇIN, H., KOÇ, T., “Mühendisler İçin Korozyon”, Nitelik Press, Ankara, 1998

I




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5 DESCRIPTION OF THE PIPELINE SYSTEM

The cathodic protection system shall protect the following pipeline bundle:

Pipeline Dia. Length (m)

Loading Lines 2 x 42” 3,000

Fire Water Line 30” 3,000

Service Water 4” 3,000

Portable Water 2” 3,000

Vapour Recovery 24” 150

Foam Concentrate 6” 150




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6 SOIL RESISTIVITY SURVEY

6.1 General

A soil resistivity survey along the pipeline route to assess the corrosionlikelihood of the soil will be carried out to identify corrosive areas and todetermine locations where temporary cathodic protection (TCP) is required.

Table 1: Classification of Soil Resistivity

Soil Resistivity,(ohm.cm)

Corrosive Characteristic of Soil

Up to 1000 Severely corrosive

1000 to 5000 Corrosive

5000 to 10,000 Moderately corrosive

10,000 and above Slightly corrosive

Severely corrosive soils Soils with humic acid and sulphide minerals.

Corrosive soils Soil, which has the capability or tendency to causecorrosion.

Moderately corrosive soils Marshlands, agricultural areas, clays, marls, clayeysoils, shale, schist and clay cemented sandstones.

Slightly corrosive or

Non-corrosive soils Silts, sands, silica and limestone cementedsandstones, conglomerates and limestone

6.2 Measuring Equipment

The following instruments and any additional instruments which shall be reasonablynecessary shall be available on site for the TCP/PCP survey, testing, and

installation:

AC resistance bridge or megger (frequency approx. 108 Hz) Multimeter for AC and DC voltage, current and resistance measurements GPS receiver Cu/CuSO4 half-cells Shunt, 1 megohm Miscellaneous hand tools

The measuring equipment to be used for the survey shall be subject to the approvalof the BTC P/L Directorate. All equipment will be calibrated annually.




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6.3 Procedure

The soil resistivity will be calculated immediately after the test is performed. If themeasurement between two consecutive readings has either increased or decreasedby a factor of two, then intermediate soil measurements will be done.

The test set-up utilizes the mechanics of the Wenner "Four Pin-Electrode Method".The resultant resistivity is the average resistivity of the soil (electrolyte) to a depthequal to the spacing between adjacent electrodes (soil pins). When using the 4 pinmethod to measure soil resistance, the 4 pins are driven into the ground in astraight line at the spacing stated below. Good contact with the soil is important.The two “C” binding posts are connected to the two end pins, and the two “P”binding posts are connected to the adjacent center pins.

Wenner 4-Pin Method

The soil resistivity will be carried out by the Wenner 4-Pin method. The resultantresistivity is the average resistivity of the soil (electrolyte) to a depth equal to thespacing between adjacent electrodes (soil pins).

The distances between the inner electrodes " P1- P2" and between the inner and theneighboured outer electrodes "C1-C2 will be as follows:

1st series of measurements, Wenner methoda = 2.0 m

2nd series of measurements,a = 4.0 m

Each measurement series will comprise consecutive individual measurementsperformed at equal intervals over the total length to be surveyed. If necessary,greater distances of "a" will be used.




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Soil resistivity measurements will be obtained along the pipeline route at depths of2, and 4 meters.

Soil resistivity measurements will be plotted on a graph of resistivity versus distance(km). This graph will be used to locate areas with less than 2000 ohm cm soilresistivity. At these locations, a TCP test station will be installed.

The soil resistivity survey will be carried out under the supervision and control ofproject engineers.




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7 AUTHORITY AND PERMITS REQUIREMENTS

Presently no additional requirement is foreseen, if any such permits to be obtained,the same will be obtained in accordance with the requirements.




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8 LAND ACQUISITION REQUIREMENTS

Presently no additional land requirement is foreseen, if any such requirement anaddendum will be prepared and submitted to Employer for approval.




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9 H&S REQUIREMENTS

Refer attached JSEA and Risk assessments .




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10 ENVIRONMENT ASSESSMENT

No special environmental assessments is required any how

All environmental incidents will be reported.

All debris and waste materials will be removed from the easement eachworking day to Employer approved location.

Toilet facilities will be provided on the easement at all times.




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11 COMMUNITY RELATIONS ASSESSEMENTS

Whenever and wherever the COL department service required, they will beinformed in advance in a timely manner to carry out their work.




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12 SECURITY ASSESSEMENT

None.




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13 QA / QC

All the works will be carried out in accordance with approved procedure andspecifications.

Documents

Edo Wms Cor Cns Int Xxx 016 686 885 Rev 0 Work Method Statement for Soil