180530-00-ME-SPC-0007-A[1]

8/11/2019 180530-00-ME-SPC-0007-A[1]

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PETROM SA

EXPLORATION &

PRODUCTION DIVISION

PROJECT NO: 180530 DOC NO: 180530–00–ME–SPC-0007-A PAGE 1 OF 22

ENGINEERING SPECIFICATION

DOCUMENT TITLE: HEAT TRACING SPECIFICATION

PROJECT DESCRIPTION: FEED AND PRE-FEASIBILITY STUDY FOR SURFACE PRODUCTIONSYSTEMS IN OIL AND GAS

ORIGINATOR: G. DONZELLI

DATE: 9 JAN. 08

REV. DATE DESCRIPTION BY CHK APP’D CLIENT

0 15/01/08 ISSUED FOR INTERNAL REVIEW GD SD SD

1 17/01/08 ISSUED FOR CLIENT REVIEW GD SD SD A 24/01/08 APPROVED FOR DESIGN GD SD SD

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REVISION DESCRIPTION SHEET

Rev. Para. Revision Description

0 Issued for Internal Review

1 Issued for Client Review

A Approved for Design

Hold

No.Para. Description of Hold

1 3.3 P&ID Legend document numbers

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1 EXECUTIVE SUMMARY .........................................................................4

1.1 Project Outline ........................................................................................4

2 SCOPE ....................................................................................................5

2.1 Definitions ...............................................................................................5

2.2 Units........................................................................................................6

2.3 ABREVIATIONS .....................................................................................6

3 REGULATIONS AND CODES ................................................................6

3.1 EU Directives ..........................................................................................7

3.2 Codes and Standard List.........................................................................7

3.3 Project Specifications..............................................................................8

3. 4 Precedence.............................................................................................8

4 GENERAL REQUIREMENTS .................................................................8

4.1 Service Conditions..................................................................................8

4.2 Responsibilities .......................................................................................9

5 DESIGN AND CONSTRUCTION ..........................................................10

5.1 Electrical System ..................................................................................10

5.2 General .................................................................................................11

5.3 Heating Elements..................................................................................12

5.4 Temperature Control.............................................................................14

5.5 Accessories...........................................................................................15

5.6 Installation.............................................................................................16

5.7 Additional Requirements.......................................................................18 6 INSPECTION AND TESTING................................................................19

7 SHIPPING AND HANDLING .................................................................21

8 DRAWING AND DATA REQUIREMENTS ............................................21

8.1 General Requirements..........................................................................21

8.2 Information to Be Submitted With Tender .............................................22

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1 EXECUTIVE SUMMARY

PETROM have issued a reimbursable engineering contract to WorleyParsons to providea Front End Engineering Design (FEED) and EPC ITT documentation for the Central andEast Region OSPS Facilities consisting of 284 Parks contained within 23 Projects (22 inCentral Region and 1 in the East). In addition, Pre-feasibility Studies leading to futureFEED design work are to be carried out on 92 Parks (contained within 15 Projects) forthe Western Region as well as for 45 Tank Farms in the three regions (2 in the EasternRegion; 38 in the Central Region; and 5 in the Western Region).

1.1 Project Outline

The Project Scope is comprised of the modernisation or abandonment of existing Parkfacilities. Modernisation consists of complete replacement of the existing Park facilities,sized to present production capacities. The Park facilities will be designed to be ofmodular construction, the modules to consist of PETROM design for manifold only(PMAN) or one of five metering point (MP) designs as put forward by PETROM.

In addition, there are five Metering Point Production (MPP) designs covering 20 Parkfacilities in the Central and East Regions that are to be evaluated for abandonment,

modernising, upsizing or downsizing in addition to others in the Eastern Region that areto be identified. Given the size and complexity of these facilities, only partialmodularisation is expected.

Work on the West Region Parks will culminate in a Pre-feasibility Study following adetailed data gathering exercise and verification of the same. There are 92 Parkscontained in 15 Projects that will be assessed for upgrade or abandonment.

The 45 Tank Farms are to be examined for upsizing, downsizing, modernisation orabandonment and will also culminate as a Pre-feasibility Study.

The scope of work begins at the manifold inlet to the Park facilities and continuesthrough to the delivery points of the Tank Farms or MPP’s; i.e. pipelines and wellheads

upstream of the manifolds upstream are not considered. However, interconnecting anddelivery pipelines will have to be considered in the overall assessment of the project.

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2 SCOPE

This specification details the minimum requirements for the design, manufacture andtesting of equipment, materials and their installation for complete electrical trace heatingsystems for installation at the OSPS Facilities located in Romania.

Particular requirements for the electrical trace heating system will be detailed on the datasheets. The Contractor / Vendor’s shall provide the information requested and return thecompleted data sheets with the bid. The Contractor / Vendor’s bid proposal submissionsshall include sufficient data to allow the system to be evaluated against the projectrequirements.

The Contractor / Vendor shall submit with the bid full technical details of his standardequipment and materials, which most nearly meet the requirements detailed herein. Aspects of the requirements, which cannot be met or for which the Contractor / Vendorproposes new or alternative technology, shall be identified and the variances explained.

It shall be the Contractor / Vendor ’s responsibility to furnish all items essential for thesafe and satisfactory operation of the electrical trace heating system, notwithstanding theinclusion or omission of it from this specification and associated data sheets.

The Contractor / Vendor shall only propose equipment and materials of proven reliability,of a type that has been in successful operation for not less than two-years. TheContractor / Vendor shall, if required, provide evidence (reference lists with installationdates and run-hours accumulated to date, etc.). Prototypes or similar unprovenequipment and materials shall not be proposed and will not be accepted.

The electrical trace heating system, including all equipment and materials, shall have aminimum service life of 25 years, under the stated service conditions. The Contractor /Vendor shall state in the tender the anticipated service life of the equipment andmaterials, assuming maintenance in accordance with the Vendor’s recommendations.

All equipment and materials shall be brand new and of recent manufacture. Used, re-conditioned or equipment and materials that have been held on long-term storage will berejected.

2.1 Definitions

• The Contractor is the party who carries out all or part of the design, engineering,procurement, construction, commission or management of the project, oroperation or maintenance of a facility.

• The Manufacturer/Supplier/ Vendor is the party who manufactures or suppliesequipment and services specified by the Contractor / Company

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•

The Company is the party who owns and operates the equipment.

• The Purchaser is the party which buys the equipment and its auxiliaries for its ownuse or as an agent for the owner.

• The Inspection Authority is the party appointed by the COMPANY to ensure thatthe equipment supplied conforms to the requirements of the Specification.

• The word shall indicates a requirement.

• The word should indicates a recommendation.

2.2 Units

The S.I. (System International) system of units shall be used as the official unitsthroughout all documentations with the exceptions as shown on data sheets and pipingspecifications.

2.3 ABREVIATIONS

The following abbreviations are used in this document:

IDS - Inspection Data Sheet

IEC - International Electrotechnical Commission

IP - Ingress Protection

ISO - International Organization for Standardization

MCB - Miniature Circuit Breaker

P&ID - Process and Instrumentation Diagram

RTD - Resistance Temperature Detector

SI - Système International d'Unités

SDRS - Supplier Document Requirements Schedule

3 REGULATIONS AND CODES

All work specified shall be in accordance with the applicable sections of the latesteditions of the Regulations, Codes and Standards (and their current amendments), listedbelow or referenced in this specification, except where modified or supplemented by

requirements noted in this specification.

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3.1 EU Directives

EU Directive 94/9/EC Equipment for explosive atmospheres (ATEX Equipment Directive)

3.2 Codes and Standard List

The equipment and installations shall comply with the latest issues and most recentrevisions or amendments of the Statutory Requirements and IEC Recommendations,current at the time of placing the purchase order including, but not limited to thefollowing:

IEC 60079 - Electrical apparatus for explosive gas atmospheres

IEC 60706 Guide on maintainability of equipment

IEC 62086-1 Electrical apparatus for explosive gas atmospheres, Electricalresistance trace heating, Part 1: General and testing requirements.

IEC/TR261423 - 1&2

Heating cable for industrial applications - Part 1 and 2

IEC 60417 - Graphic symbols for use on equipment

IEC 60445 - Basic and safety principles for man-machine interface, marking andidentification - Identification of equipment terminals and of

terminations of certain designated conductors, including generalrules for an alphanumeric system

IEC 60529 - Degrees of protection provided by enclosures (IP Code)

IEC 60617 - Graphic symbols for diagrams

IEC 60702 - Mineral insulated cables and their terminations with rated voltagenot exceeding 750V

IEC 60800 - Heating cables with rated voltage of 300/500V for comfort heatingand prevention of ice formation

IEC 61000 - Electromagnetic compatibility (EMC)

For the purposes of this Specification, the word ‘should’ shall be replaced by the word‘shall’ wherever it appears in the above referenced codes and standards.

For the purposes of this Basis of Design, the word 'should' shall be replaced by the word'shall' wherever it appears in referenced codes and standards.

The equipment shall be supplied in accordance with all applicable European Union

Directives. Particular attention should be paid to:• Safety

• Low voltage equipment

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• Machinery

•

Electromagnetic Compatibility• CE Marking

3.3 Project Specifications

The following project specifications are referenced in this document and apply wherespecified:

180530–00–PR–PHL-0004 Winterization Philosophy180530–00–PR–PID-XXXX P & ID Legend (HOLD)

180530–00–ME–SPC-0003 Painting and Coating Specification180530–00–PE–BOD-0001 Overall design basis

3. 4 Precedence

In general, the order of precedence for all design work shall be:

a. Romanian Laws, Decisions, Orders, Prescriptions, Normative, Rules, NationalStandards, Codes and Regulations:

b. EU Directives

c. Contract

d. Datasheets & Drawings

e. Project Specifications and Philosophy

f. Referenced Codes & Standards e.g. IEC or other National Standards

In the event of any conflict arising between the referenced documents, laws, codes andstandards, the more stringent shall be applied. Any deviation from the referenceddocuments, laws, codes and standards shall obtain written approval from COMPANY.

4 GENERAL REQUIREMENTS

4.1 Service Conditions

4.1.1 Environmental Conditions

The electrical trace heating system shall be suitable for long term, continuous operationat part or full load on the electrical system having the characteristics specified on thedata sheet.

The electrical trace heating system shall be suitable, in all respects, for operation in thesite environmental and service conditions as listed in the project document BasicEngineering Design Data Document No.180530–00–PE–BOD-0001.

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Equipment and materials conforming to this document shall be suitable for operation attheir nameplate ratings in the conditions stated above and as follows:

External equipment design temperatures: -25 °C min 55 °C maxInternal equipment design temperatures: -25 °C min 40°C maxMaximum relative humidity: 85 % Average relative humidity: 75 %

The Contractor/ Vendor shall state the maximum and minimum operating temperature ofthe equipment and materials proposed.

4.1.2 Electrical System Characteristics

The heat tracing system shall operate normally under following power supply variation:

a) Nominal power supply shall be 400V, 3 phases, 4 wire with ±10% voltage variationb) Nominal frequency shall be ±5% frequency variation

System voltage drops shall be limited to 10% at the consumer’s terminals under normaloperating conditions. Transient voltage deviations occurring at switchboard bus barsduring power system switching or motor starting/reacceleration shall be such as tomaintain a minimum of 90% voltage on the switchboard bus bars and at least 80% at allconsumers’ terminals.

The voltage drops shall be calculated for the worst operating conditions (i.e. with thesystem operating at minimum short circuit conditions).

4.2 Responsibilities

The Contractor / Vendor shall have single point responsibility for all aspects of the works,inclusive of all components sub-contracted or purchased from other parties.

4.2.1 Health, Safety and Environmental Regulations

The Contractor / Vendor shall be responsible for ensuring that the goods and services

supplied meet all applicable regulations on health, safety and environmental issues.

4.2.2 Quality Assurance

The Supplier / Vendor for heat tracing and heating system designer and manufacturershall have a quality management system that complies with the applicable requirementsof the Quality management as specified in the subcontract document. Designer andfabricator shall be certified as an ISO 9001 compliant company.

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5 DESIGN AND CONSTRUCTION

5.1 Electrical System

5.1.1 Panel Boards

Panelboards shall be rated as specified in the Data Sheet. Branch circuit breaker trip ratingshall be 20 Amp unless otherwise approved by the buyer. In no case shall the branchcircuit breaker exceed 30 Amps. Distribution panels shall be located as close as practical tothe center of the load of the heaters they supply. Each distribution panel shall have 20percent spare breakers at the end of construction. The interrupting rating of the circuit

breakers shall be based on the available short-circuit current from Buyer's power system,and the characteristics of the distribution transformer. Circuit breakers shall be mouldedcase and full-load current shall not exceed 80 percent of its rating. Circuit breakers feedingcircuits located in Classified areas shall be 30mA ground fault interrupting type.Panelboards that are located outside, shall be suitable for outdoor installation withenclosures. Panelboards located in Classified area shall be suitable for use in Classifiedarea. A Local trouble alarm shall be provided at the Panel board to indicate

• fault trip operation of an MCB/RCD

• Heat Tracing failure

• Damaged temperature sensor

Alarms shall be audible and visible with test and reset features. Audible alarm shall have‘silence’ feature. Dry output contact for common trouble shall be provided for remotealarm for Buyer’s use. The common trouble alarm shall also include loss of main powerin addition to the above alarm conditions.Local indication on Panel boards shall also be provided for the following:

• Main Supply available

• Heat Tracing ON

• Common Trouble

• Current

5.1.2 Field DistributionThe supply cabling between the distribution board and the heaters shall have a crosssection adequately rated for the maximum load, and restricting the voltage drop over thecable under full load conditions to maximum 5% of the nominal voltage. The cables shallhave copper conductors and a steel wire armouring or braiding and, if required, leadsheathing. Cabling and heaters shall be connected via junction boxes. Individual heaters orgroups of heaters of not more than five segments on the same pipeline shall be providedwith a local switch pad lockable in the 'Off' position and installed near the supply point of theheater(s). Heaters integrated in instruments along the pipelines shall also be connected toa heater supply circuit.

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5.2 General

5.2.1 The Contractor / Vendor shall provide design worksheets to facilitate the installation ofthe trace heating system(s), including any instruments and impulse lines of theinstruments, showing the following information:-

Line Number, Pipe Size, Pipe Material and Specification, Fluid in Pipe & Fluid IgnitionTemperature, Pipe Length, Number of Valves, Number of Flanges, Number ofInstruments.Type of Insulation Material, Thickness, Cladding, Heat Loss.Heater Reference and Type.Length of Heater per metre of Pipe, Valve, Instrument and Pipe Support.

Spiral Pitch where applicable.Length of Heater per Circuit.Temperatures.Mass Flow Rate.Distribution Switchboard and Circuit Reference.Circuit Inrush and Duration.MCB Rating, Type/Characteristic.Power Cable Size and Type including Gland Size.Drawing/Document References.Hazardous Area Certification.

5.2.2 Design data shall be prepared on the basis of the following parameters provided by thePURCHASER:-

Pipe Material.Pipe Size.Pipe Route (Isometric / General Arrangement Drawing where available).Pipe Run Details (Product in Pipe, no. of Valves, Instruments and Flanges etc.)Insulation Type and Thickness (and Cladding where applicable).Temperature to be achieved / maintained and Heating Range.Piping and Instrumentation Diagrams (P & ID’s)Flow Rate

Initial Temperature of Pipe Fluid.Minimum Ambient Temperature.Line List.

5.2.3 Selection of equipment to be installed in hazardous areas shall be in accordance with"Hazardous Area Classification Philosophy", document No. – HOLD –

5.2.4 Apart from compensation heating, there may be a need to heat-up (to liquefy) thecontent of a line within a certain duration. For this type of application additional heatingcapacity/control shall be given to the maximum heat density allowed under suchconditions.

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5.2.5 When the pipe material or content has low thermal conductivity, the heat density of theheating elements shall be such that the temperature limits for pipe or content are notexceeded.

5.2.6 The inclusion of spare capacity, i.e. design margin, shall be considered when for criticalapplication the power output is not allowed to drop below the design values.

5.2.7 All electrical equipment subject to operating and maintenance activities shall be easilyaccessible and shall allow for safe and convenient performance of such activities.

5.3 Heating Elements

5.3.1 General

5.3.1.1 The following heater types shall be used in order of preference:-

• Self-regulating heaters

• Constant wattage parallel heaters

• Mineral insulated heaters

The heater type that best suits each application shall be selected.

5.3.1.2 All heating tape shall be supplied in continuous drum lengths as stated in the Requisition.

5.3.1.3 The Contractor / Vendor shall state in the bid his standard and maximum drum lengths.

5.3.1.4 Drums shall be non-returnable and of rigid construction, with a metal reinforced centre and woodor metal flanges, suitable for shipping and transportation. Heating tape shall be weatherprotected over the exposed outer coils.

5.3.1.5 Heaters shall be distributed and grouped logically in order to minimize the number of switches,thermostats and power cabling required. In installations where the process flow can followdifferent routes (for example manifolds and A/B pump lines, bypass circuits and safety showers),each independent part of the system shall be controlled separately and supplied via separateMCBs. Where the same conditions apply in a pipeline, the heaters shall be controlled from one

point unless they are connected to different circuits.

5.3.1.6 Heating systems of duplicated process control instruments shall not be connected to the samecircuit. Heater circuits shall be loaded with maximum 20 A for single-phase circuits and 3 x 20 Afor three-phase circuits. For the operating current rating of self-regulating/self-limiting heaters,the minimum operating temperature shall be taken into account.

5.3.1.7 To prevent overloading of the heater conductors, the maximum length of a Parallel HeatingCable shall be limited in accordance with the specification of the Manufacturer. Some heatingcables are available with additional power supply conductors integrated in the tape. This willallow extended heater lengths without using separate power feeding points.

5.3.1.8 Through connections or 'Tee-offs' shall not be made underneath the pipe insulation; only end-seals and 'cold-lead' connections may be used. All other connections shall be made inconnection boxes. Sufficient heater capacity shall be installed to ensure that, towards the end of

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the heating cable, the output does not drop below the minimum design value owing to thevoltage drop in the heater conductors.

5.3.2 Self-Regulating Heaters

5.3.2.1 Self-regulating heaters shall be utilised where possible, within the restrictions of heat output andoperating temperatures. They can be used for all winterising and the majority of compensationheating requirements.

5.3.2.2 Heating tape shall consist of two parallel copper conductors, both being in contact with a self-regulating semi-conductive material. This basic element shall be insulated by one or more non-hygroscopic jackets, and shall be covered with a braided metal screen covering the surface anda polymer outer jacket. The braided metal screen shall have an electrical conductivity not less

than the conductivity of one conductor.

5.3.3 Constant Wattage Parallel Heaters

5.3.3.1 Constant wattage parallel heaters shall be utilised when the required heat output or the operatingtemperature is beyond the capabilities of self-regulating heaters. A constant wattage parallelheating cable shall consist of two copper conductors separated by an insulating core.

5.3.3.2 Heating elements (wires or other type of elements) are connected to the two conductors atcertain distances, forming heated zones. The maximum length between two elements (unheatedzone) shall not be more than 0.5 metre.

5.3.3.3 The conductor and the heating elements shall be provided with one or more layers of insulatingmaterial. All insulating material shall be heat resistant and non-hygroscopic, and shall becovered with either a braided metal screen covering the surface together with a polymer outer jacket or stainless steel corrugated outer sheath.

5.3.3.4 The electrical conductivity of both the braided metal screen and the stainless steel corrugatedouter sheath shall be not less than the conductivity of one conductor.

5.3.4 Mineral Insulated Heaters

5.3.4.1 Mineral insulated heaters shall only be used when the required temperatures are beyond thecapabilities of constant wattage parallel heaters. Use of mineral insulated heaters shall besubject to PURCHASER's approval.

5.3.4.2 Mineral insulated heating cable shall consist of a metal outer tube with a concentric heatingconductor inside, insulated with compressed magnesia oxide powder. The cable shall have aconstant power output per metre, which shall be determined by the specific conductor resistanceand the total length of the cable.

5.3.4.3 The cable shall be prefabricated in the required length and provided on both ends with properseals, cold connection leads and cable glands.

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5.4 Temperature Control

5.4.1 General

5.4.1.1 The selection of temperature control will be dependent on the following criteria:-

• Energy saving

• Product requirements

• Temperature limitation for safety reasons

5.4.2 Temperature Control for Energy Saving

5.4.2.1 Pipelines with compensation heating normally do not require heating when the line is in

operation. Only under no or low flow conditions will the heating system be used to compensatefor the heat losses.

5.4.2.2 Consequently, the heating system shall only be activated when required, and it shall becontrolled by local thermostats.

5.4.2.3 The number and location of the thermostats shall be selected to ensure that the heatingrequirements of all piping and equipment involved will be maintained under all processconditions.

5.4.2.4 Local thermostats shall be of the capillary type. The capillary shall be no more than 5 m long.The contacts of thermostats used for direct switching shall have a minimum rated capacity of 16

A, which may be obtained by an integrated local contactor. Each contact shall not be loaded withmore than 75% of its nominal rating. The temperature setting accuracy shall be better than ± 5%of the set value, with a maximum of ± 10 °C. The switching hysteresis shall be between 5% and10% of the actual setting or between 4 °C and 10 °C whichever is the smaller.If highly accurate control is required, electronic thermostats with PT-100 sensor should be used.The contacts of the thermostats used for direct switching shall have a minimum rated capacity of16A, which may be obtained by an integrated local contactor. Each contact shall not be loadedwith more than 75% of its nominal rating. The maximum switching accuracy shall be within ± 1°C for an actual setting between 0 °C and 100 °C, or ± 2% for higher temperature settings. Theswitching hysteresis shall be within ± 3%.

5.4.2.5 Local thermostats shall only be adjustable with the use of tools.

5.4.3 Temperature Control Resulting from Product Requirements

5.4.3.1 Pipelines carrying products which are sensitive to degradation due to overheating may require amore sophisticated control system than local thermostats.

5.4.3.2 Temperature control for the compensation heating shall under these conditions be obtained fromthe process temperature measuring system. If such a system is not available, an independentcontrol system with thermocouple devices or RTD's (e.g. PT100 elements) shall be provided.

5.4.3.3 The sensors shall be of the sealed type and shall be hooked up to separate junction boxes. The

wiring between a sensor and its associated connection box shall not be more than 5m.

5.4.3.4 The control units shall be installed in the trace heating distribution board(s) and shall comply withrequirements stated in the relevant specifications (HOLD).

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5.4.4 Temperature Limitation for Safety Reasons

5.4.4.1 When heaters are installed in a hazardous area which is classified with a more stringenttemperature classification than that of the heater, independent temperature limiters shall beinstalled to monitor the surface temperature of the heaters. When the maximum allowabletemperature has been reached, the associated heater shall be switched off automatically, andremain switched off until the temperature limiter has been reset manually. Alternatively, automatic reset will be acceptable when the temperature limiter sends an alarm toa manned control room if the heater is switched off.

5.4.4.2 Thermostats installed as temperature limiters for safety reasons shall be of the fail-safe type.

5.5 Accessories

5.5.1 Junction Boxes

5.5.1.1 Junction boxes shall, as far as practical, be located at close to grade or adjacent to platforms,stairs, or ladders in order to facilitate access for safe installation, inspection and maintenance.

5.5.1.2 Junction Boxes shall be suitable for the stated service conditions, with minimum degree ofprotection IP 55 (to IEC 60529). Enclosures shall be stainless steel sheet, supplied with internaland external earthing studs. Internal terminals shall be fixed within the terminal box. All cableentries shall have ISO metric threads and shall be plugged with removable threaded stopper

plugs.

3.5.1.3 All junction boxes for hazardous area installation shall be constructed from die-cast Aluminium Alloy LM6 with epoxy powder coating finish.

3.5.1.4 Junction boxes shall be used for:-

• The connections between supply cable and heater cable.

• The distribution of supply of one circuit of the distribution board to sub-circuits. Only thesupply of one circuit of the distribution board shall be allowed in a connection box.

5.5.1.5 Junction boxes shall contain sufficient terminals for all the connections to be made. Individual

terminals shall be provided for each conductor. The terminals shall be of non-looseningconstruction and of the wedge type, obviating the use of cable lugs and constructed in such away that direct contact between screw and conductor is avoided.

5.5.1.6 Terminals shall be identified in accordance with the related diagram. In addition, sufficient earthterminals or an earth bar with sufficient earth connection points shall be provided to earth themetal screens of all cables and heaters.

5.5.1.7 All cables connected to the box shall enter the box through the bottom or the sides. No entrancefrom the top is allowed. Sufficient cable glands suitably sized for the associated cables shall beinstalled.

5.5.2 Thermostat / Junction Box Mounting Brackets

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5.5.2.1 Mounting brackets, for securing thermostats / junction boxes to piping, shall be manufacturedfrom stainless steel and shall be complete with all necessary accessories for securing thermostat/ junction box to bracket.

5.5.2.2 Stainless, adjustable straps for securing brackets to pipelines shall also be provided.

5.5.3 Adhesive Tape

5.5.3.1 Adhesive tape, for securing heating tape to pipe lines, shall be glass cloth pressure sensitive withthermo-setting adhesive.

5.5.4 Termination Kits

5.5.4.1 Heating elements shall be fitted with termination kits where they are connected to the powersource.

5.5.4.2 Termination kit cable glands shall be brass, waterproof and fitted with special grommet to suiteach size of heating tape as required.

5.5.4.3 Each gland shall be supplied complete with lockout, IP washer and termination sleeving wherenecessary. Remote end sealing materials of the heat-shrink type shall also be provided.

5.5.5 Insulation Entry Kits

5.5.5.1 Insulation entry kit shall provide weather proof entry into thermal insulation and shall includecable gland with grommet to suit each size of heating tape as required.

5.5.5.2 Each kit shall include tightening plate manufactured from stainless steel and locknut for cablegland.

5.6 Installation

5.6.1 Heater Distribution

5.6.1.1 Heaters will be distributed and grouped logically in order to minimise the number of circuits,thermostats and power cabling required. In installations where the process flow can follow

different routes, each independent part of the system shall be controlled separately. Where in apipeline the same conditions apply, the heater shall be controlled from one point unless theapplied heaters are connected to different circuits.

5.6.1.2 The Contractor / Vendor shall provide all relevant information to the PURCHASER to enable alogical and economical circuiting of the trace heating system, concern also being paid to need forsafe access for subsequent inspection and maintenance.

5.6.1.3 Heater circuits shall be supplied 230V 50 Hz, 1 phase. The heater elements shall be suitable forswitching by air break contactors.

5.6.1.4 Heater circuits shall be loaded with maximum 16A per phase (continuous). For the current rating

of self-limiting heaters, the minimum operating temperature shall be taken into account. Thelocal thermostat shall not be loaded with more than 75% of its nominal rating.

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5.6.1.5 To prevent overloading of the tape conductors, the maximum length of a parallel heating tapeshall be limited in accordance with the specification of the manufacturer. Some heating tapesare available with additional power supply conductors integrated in the tape. This will allowextended heater lengths without using separate power feeding points.

5.6.1.6 No through connections or “tee-offs” shall be made underneath the pipe insulation. Cold-leadconnections shall be made in junction boxes. Sufficient heater capacity shall be installed toensure that, towards the end of the tape, the output does not drop below the minimum designvalue owing to the voltage drop in the tape conductors.

5.6.2 Heater Installation

5.6.2.1 Heaters shall be installed in accordance with the manufacturer instructions. All heaters shall befixed to ensure a good and permanent contact with the surface to be heated over the entire (hot)length.

5.6.2.2 Heating tapes shall normally run straight along the lower quadrant of the pipes. If spiralling oftapes is necessary, this shall be done in such a way to ensure that the tape can easily beremoved. Overlapping or touching of constant wattage output heaters is not allowed. Whereheaters run close together, special retaining fixings shall be used to prevent the heaters fromtouching. Overlapping of self-regulating heaters shall be avoided as much as possible.

5.6.2.3 Entry kits shall be used where heating tapes, cold leads or temperature leads enter the thermalinsulation, to prevent damage and to ensure weatherproofing.The entry kits may consist of special entry brackets, cable gland or conduit type entries. Cable

glands or conduit type entries shall be fixed to the bottom part of the pipeline.The design and the installation of the entry brackets shall be such that ingress of water isexcluded.

5.6.2.4 Heating tape fixed to pumps, valves, flanges, instruments, etc. shall allow easy removal of theequipment without damaging the tape. To obtain good contact between heater and heatedsurface, additional metal tape or foil can be used. Additional fixing straps shall be provided onboth sides of the fitting to avoid loosening of the heater from the associated pipes. Specialmeasures shall be taken to prevent damage to the heaters from sharp edges or rough surfaces.

5.6.2.5 Fixing materials for heaters shall ensure good and permanent contact between heater andheated surface. They shall be of sufficient mechanical strength, non-corrosive, suitable for the

relevant operating temperature, and shall not damage the heater mechanically or chemically.In general, for heaters with a polymer outer jacket, self-adhesive plastic or glass fibre tape shallbe used. For heaters with a stainless steel outer sheath, stainless steel straps or bands shall beutilised.

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PRODUCTION DIVISION


5.7 Additional Requirements

5.7.1 Nameplate, Rating Plate and Labels

5.7.1.1 To facilitate ease of identification, heater tape drums shall be clearly labelled with the following:-

• Tape Type and Supply Voltage.

• Tape Output (W / m).

• Length of Tape on Drum.

• Purchase Order and Item Number.

• Drum No. as stated on the Purchase Order.

This identification shall be indelibly stencilled in English each outer flange of the drum.

The Contractor / Vendor shall prepare drumming schedules to facilitate material control duringinstallation.

5.7.1.2 Heating element identification tags shall be of the thermo-fit marker system (heat shrink) type.Each identification tag shall be coloured white, have space for 15 digits and be pre-assembledon a suitable carrier to facilitate installation. Tag marking shall be in accordance with pipe lineschedule.

5.7.1.3 All pipelines and equipment heated with electrical tracing shall be provided with suitable, durableweatherproof caution signs, visible from all sections of a traced system. Signs on traced pipelines shall not be more than 5 metres apart and positioned on alternate sides of the cladding.Caution signs shall be yellow with black lettering and shall be in English.

5.7.1.4 The elements of a circuit such as thermostats, junction boxes and heaters shall be provided withpermanent labels which shall consistently indicate the number of the circuit to which theelements are connected and the circuit reference. The labels shall be fixed on a non-removablepart and shall be in English Language. Labels for heaters shall be fixed on the sheathing of theassociated pipe lines or equipment.

5.7.1.5 All signs and nameplates shall be securely attached with stainless steel screws.

5.7.2 Painting and Finish

5.7.2.1 The Supplier / Vendor’s standard finish will be acceptable subject to the following minimumstandards:

a. Components degreased, sprayed with a zinc phosphate primer and passivated;b. Electrostatically applied polyester powder coating to an average dry film thickness of 75micron.

5.7.2.2 Finish colour shall be the manufacturer’s standard.

5.7.2.3 The Contractor / Vendor shall submit details of the paint finish.

5.7.2.4 The Contractor / Vendor shall provide 2.5 litre of touch-up paint to repair any damage incurredduring installation.

5.7.3 Special Tools and Test Equipment

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PETROM SA

EXPLORATION &

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5.7.3.1 The Contractor / Vendor shall provide any special tools and test equipment necessary for thesafe and effective erection, operation, periodic inspection, testing and maintenance of theequipment provided.

5.7.3.2 Duplicate sets of keys shall be provided for all lockable devices.

5.7.4 Spare Parts

5.7.4.1 The Contractor / Vendor shall provide a separately priced list of spare parts recommended tobe held for two-year continuous operation.

5.7.4.2 Installation and Commissioning spares (approved by the PURCHASER) are to be included withthe main equipment.

5.7.5 On-Site Supervision

5.7.5.1 The Contractor / Vendor may be required on-site to supervise the installation andcommissioning of the heat tracing systems and ensure that work is properly executed.

5.7.5.2 The Contractor / Vendor shall provide with the bid rates for the on-site supervision of theerection and commissioning.

6 INSPECTION AND TESTING

Inspection and witnessed test shall be as detailed in inspection data sheets.

The equipment shall be inspected and witnessed tested by the PURCHASER andCOMPANY at the manufacturer's works, as described in the relevant standards and asnoted below.

The PURCHASER shall be allowed access to manufacturer's shop and offices at allreasonable times for purposes of inspection and obtaining information on the progress ofwork.

The Contractor / Vendor shall submit a detailed programme of testing to the

PURCHASER at least ten working days prior to the commencement of the tests. Whereapplicable, specialist equipment Contractor / Vendor’s shall be notified. The programmeshall indicate the sequence and timing of all inspection, testing and pre-commissioningrequirements.

All parts of the installation shall be inspected, tested and certified, fully in accordancewith the referenced codes and standards.

No witnessed testing shall take place until all the latest relevant drawings, certificatesand specifications have been issued to and approved by the PURCHASER.

Type tests as required by the relevant standards shall have been carried out on identicalequipment and materials by an independent testing authority and type-test certificatesshall be provided.

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PETROM SA

EXPLORATION &

PRODUCTION DIVISION


The Contractor / Vendor shall confirm satisfactory completion of all routine tests andshop inspection prior to inspection by the PURCHASER, to ensure that the witnessedtesting is not prolonged by faultfinding and rectification.

Faults or unsatisfactory operations that result in abortive witness tests shall be rectifiedat the expense of the Contractor / Vendor. Any expense incurred by the COMPANY orthe PURCHASER resulting from abortive tests shall be chargeable to the Contractor /CONTACTOR/ VENDOR.

The Contractor / Vendor shall submit to the PURCHASER for approval a full set ofstandard test sheets suitable for recording all test results. Where tests are required to be

carried out for which there is no standard test sheet, the Contractor / Vendor shallprepare suitable test sheets for approval by the PURCHASER.

The Contractor / Vendor shall supply all necessary personnel, tools, tackle, testequipment and other items required to satisfactorily carry out all the tests. All instrumentsshall be calibrated in accordance with the manufacturer’s recommendation. Copies of thecalibration certificates shall be provided with the test results.

Should the equipment not pass the witnessed tests, further witnessed tests may berequired.

On satisfactory completion of the tests and before despatch, the Contractor / Vendorshall submit copies of the test certificates for approval. The equipment shall not bedespatched until the PURCHASER has approved the test certificates.

Inspection and testing documentation shall be prepared by the Contractor / Vendor andsubmitted to the PURCHASER prior to works acceptance.

The Contractor / Vendor shall record all the details, measurements and data as requiredin the relevant standards.

All test results shall be written at the time of test in blue ink and signed by the tester and

the witness. Alterations or corrections shall be made by crossing out not by over-writingthe previous data. No test results shall be corrected with correction fluids or similarcorrection media.

The Contractor / Vendor shall provide the original and a copy of the inspection and testsheets, together with any supportive documentation required in the relevant standards,to the PURCHASER within five working days of the tests being carried out.

The inspection and test documentation shall indicate all of the test instrument detailsincluding the following satisfactory completion of all works inspection and tests theContractor / Vendor shall submit all completed certificates, results and relateddocuments to the PURCHASER for acceptance.

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PETROM SA

EXPLORATION &

PRODUCTION DIVISION


Acceptance or acknowledgement of any test results or data by the Company orPURCHASER does not relieve the Contractor / Vendor of responsibility for theequipment supplied as required in the Specification, relevant Standards, Regulations orCodes of Practice.

7 SHIPPING AND HANDLING

Unless indicated otherwise in the contract, the equipment shall be thoroughly preparedfor export and packed for shipment as specified in the requisition.

Methods of shipment to be employed are subject to Company and/or PURCHASER's

approval. The Contractor / Vendor shall submit details of the proposed methods with thebid.

Export packing methods shall also be suitable for 6 months extended storage at the jobsite under covered shelter and in the environmental conditions detailed. For thispurpose, it shall not be necessary to hook-up any anti-condensation heaters, where theyare provided. Sufficient drying agent shall be provided inside the packing to absorb anypossible condensation products.

Where the storage period is expected to exceed 6-months, the PURCHASER will notifyContactor and arrange for possible additional protection and inspection by

manufacturer's representatives.

Marking of shipping containers shall be subject to Company and/or PURCHASER'sapproval, and guidelines for special marking shall be followed meticulously, to ensurepositive identification at the jobsite.

During transportation, shipment, storage and installation all openings shall be sealedweather-tight.

The Supplier / Vendor shall separate pack any miscellaneous equipment that must beremoved for shipment.

8 DRAWING AND DATA REQUIREMENTS

8.1 General Requirements

8.1.1 The Contractor / Vendor shall notify the PURCHASER of any conflict with or omissionsfrom the data contained in the enquiry documentation.

8.1.2 Technical drawings, data and documentation shall be issued in the quantities and at thetimes as defined and agreed with the Company and/ or the PURCHASER.

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PETROM SA

EXPLORATION &

PRODUCTION DIVISION


8.1.3 The Contractor / Vendor shall ensure that his drawing sizes and their title blocks satisfythe PURCHASER’s requirements for the project. This shall also apply to all drawingsprovided by the Contractor / Vendor’s sub-Supplier/ VENDORs.

8.2 Information to Be Submitted With Tender

8.2.1 General

a. Confirmation of full compliance with the specification, or a list of deviations.

b. All of the information requested in the requisition, including partial completion of thedata sheets.

c. Details of the proposed painting system for the equipment.

d. Estimated total assembled weight of the equipment and materials, overall and shippingdimensions.

e. Comprehensive specification of all equipment and materials complete with fulldescriptive literature.

f. Details of the proposed packing and shipping methods.

g. Lists of spare parts recommended to be held for installation, commissioning and two-years continuous operation.

h. List of special tools and test equipment.

Documents

180530-00-ME-SPC-0007-A[1]