KOC-L-015

KUWAIT OIL COMPANY (K.S.C.)

STANDARDS PUBLICATION

KOC RECOMMENDED PRACTICE

FOR

EXTERNAL CATHODIC PROTECTION OF

UNDERGROUND STEEL PIPELINES &

PIPING NETWORKS

DOC. NO. KOC-L-015

I STANDARDSTEAM I

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/ DOC. NO. KOC-L-015 11 Page 1 of 41 REV. 1

KUWAIT OIL COMPANY (K.S.C.)

STANDARDS PUBLICATION


FOR

EXTERNAL CATHODIC PROTECTION OF

UNDERGROUND STEEL PIPELINES

&

PIPING NETWORKS

I DOC. NO. KOC-L-015 1 1 1 1 REV. 1


FOR

UNDERGROUND STEEL PIPELINES

PIPING NETWORKS

ISSUING AUTHORITY:

STANDARDS TEAM

28.02.2007 Issued as Final Task force

KOC Recommended Practice ( TF-CPIOZ ) I

DOC. NO. KOC-L-015 11 Page 3 of 41 11 REV. 1

TABLE OF CONTENTS

FOREWORD

1 .O SCOPE

2.0 APPLICATION

3.0 TERMINOLOGY 3.1 Definitions 3.2 Abbreviations

4.0 REFERENCE STANDARDS AND CODES 4.1 Conflicts 4.2 List of Standards and Codes

5.0 ENVIRONMENTAL CONDITIONS

6.0 HEALTH, SAFETY AND ENVIRONMENT

7.0 CATHODIC PROTECTION SYSTEM DESIGN Design Considerations Basic Design Requirements Design Life Potential Range Current Requirements and Density Current Drainage Bonding Test Coupon Test Post Road Crossings Overhead Power Transmission Lines Soil Resistivity Electrical Continuity Electrical Isolation Electrical Connections Deep Well Anode Ground Beds Galvanic I Sacrificial Anode System

8.0 CATHODIC PROTECTION DESIGNER & INSTALLER

9.0 MATERIALS AND EQUIPMENT REQUIREMENTS 9.1 Selection of Materials and Equipment 9.2 Anodes 9.3 Cables 9.4 Transformer Rectifier (TIR) 9.5 Junction Boxes 9.6 Carbon Backfill

Page No.

5

6

6

6 6 9

10 10 10

12

12

12 12 13 13 14 14 14 15 15 16 16 17 17 17 17 18 19 20

2 1

2 1 2 1 21 22 22 23 23

INSTALLATION OF CP SYSTEM 101 Deep Ground Bed Installations 10.2 Galvanic I Sacrificial Anode Installations

PRE-COMMISSIONING & FINAL COMMISSIONING 111 General I 1.2 Natural Potential 11.3 Preliminary Adjustment 11.4 Potential Measurement 11.5 Interference Testing 11.6 Final Commissioning

QUALITY ASSURANCE I QUALITY CONTROL

MARKING

DELIVERABLES 14.1 General 14.2 Calculations and Documentation

AS-BUILT DRAWINGS

APPENDCES

Appendix - A : Typical Inspection and Test Plan for Deep Groundbed Cathodic Protection System

Appendix - B : Typical Check Lists 1. Deep Groundbed Cathodic Protection System 2. Road Crossing Cathodic Protection System 3. Boxes (J.B and Test Box) 4. TR I Rectifier 5. Pre-Commissioning Check List for Impressed

Current Cathodic Protection System (Pipelines)

Appendix - C : Typical Drawings for Cathodic Protection

Appendix4 : Typ. Deep Anode Ground Bed General Arrangement (CP-003 Rev.0)

Appendix 11 : Typ. Single & Double T.R Unit Compound Earthing Layout (CP-004 Rev.0)

Appendix Ill : Typ. Cathodic Protection System for piping / Pipelines (CP-006 Rev.0)

ACKNOWLEDGEMENT

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FOREWORD

This document "KOC Recommended Practice for External Cathodic Protection of Underground Steel Pipelines & Piping Networks" (Rev.1) has been approved by Standards Team in consultation with Standards Technical Committee (STC) for consistent use throughout for the corporate engineering and operational functions of Kuwait Oil Company (K.S.C).

The purpose of this RP sets out to achieve the following objectives:

a) To describe current technical practices in industry and general procedures for establishing Cathodic Protection system with a view to minimize and control corrosion of the external surfaces of underground steel pipelines and piping network.

b) To establish general technical inputs and guidance for developing project specifications in order to ensure quality, safety and reliability.

c) To provide general technical inputs and guidance for KOC User Teams and Contractors during the maintenance and upgrading programs of the existing Cathodic Protection systems.

d) To set out minimum requirements and guidance for monitoring compliance of materials and testing with a Contract.

e) To act as a tool for internal communication from which future safety, environmental and technological changes can be measured.

Feedback as well as any comments or suggestions from the application of this RP derived at any stage of design, construction, maintenance and field experiences are encouraged and should be directed to:

The Team Leader Standards (Chairman, Standards Technical Committee) P.O.Box-9758, Ahmadi 61 008 State of Kuwait

Task Force Responsible for this Recommended Practice

The preparation of this Recommended Practice has been entrusted by the Standards Technical Committee (STC) of the Task Force No. (TF-CPl02) comprising of the following members:

Abdul R. Al-Shamari Insp. & Corr. (N&WK) TF Leader Tel. No. 61426 Hasan Sabri Insp. & Corr (S&EK) Member Tel. No. 67489 Govinda Mishra Design Team Member Tel. No. 61097 Liakat Ali Maintenance (WK) Member Tel. No. 20061 Uppara Saibaba HSE Systems Member Tel. No. 71837 Hamad Rejab Prod. Opns. (EK) Member Tel. No. 22528

DOC. NO. KOC-1-015 REV. 1

This Recommended Practice (RP) covers the minimum general requirements for system design, equipment, material, installation, inspection 1 testing and commissioning of inland (onshore) permanent Cathodic Protection systems that provide adequate inland (onshore) externai corrosion protection 1 control of the external surfaces of the following KOC underground assets, which are in contact with the environment (soil). Requirements for temporary CP installation are specified to combat corrosion during construction stage.

a) New buried coated steel pipelines and piping.

b) Existing buried coated and non-coated steel pipelines and piping.

This RP is for guidance only, and does not stipulate any specific system design or practices for every application. Therefore, the system designer I contractor shall perform the necessary investigation of all system requirements and other pre- design requisites such as soil properties, piping design, pipeline coating materials, pipe sizes, pipeline lengths, pipeline routes, etc.

The application of this RP shall be undertaken only by qualified personnel, who have the necessary experience, knowledge and qualification in CP corrosion prevention methods for underground steel structures I pipelines I piping networks.

APPLICATION

The materials, equipment, system design, installation, inspection 1 testing and commissioning of Cathodic Protection (CP) system for underground steel structures, pipelines, and piping networks shall conform to the requirements of this RP and the reference standards I codes mentioned herein.

Any exceptions or deviations from this RP, along with their merits and justifications, shall be brought to the attention of KOC Controlling Team for their review, consideration and amendment by Standards Team (if required).

Compliance with this KOC Recommended Practice does not of itself confer immunity from legal or statutory obligations.

TERMINOLOGY

Definitions

For the purposes of this RP, the following definitions apply.

Anode

The electrode of an electrochemical cell at which oxidation occurs. Electrons flow away from the anode in the external circuit. Corrosion usually occurs and metal ions enter the electrolyte at the anode.

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Cathode

The electrode of an electrochemical cell at which reduction occurs.

Cathodic Disbondment

The disturbance of adhesion between coating and pipe surface due to cathodic reaction.

Cathodic Polarization

The charge of electrolyte potential in the negative direction caused by the current passing across the electrolyte interface.

Cathodic Protection

A technique to reduce or control the corrosion of a metal surface by making that surface the cathode of an electrochemical cell.

Coating

A liquid, liquefiable, or mastic composition that, after application to a surface, is converted into a solid protective, decorative, or functional adherent film.

Coating Disbondment

The loss of adhesion between the coating and the metal surface.

Corrosion

The deterioration of a material, usually a metal, that results from a reaction with its environment. It is an electrochemical process.

Corrosion Rate

The rate at which corrosion proceeds.

Current Density

The current flowing to or from a unit area of an electrode surface.

Electrical Isolation

The condition that a metal structure is being electrically separated from other metallic structures or from the environment.

Electrolyte

An environment that contains ions migrating in an electric field. In this RP, soil is to be considered.

Foreign Structure

Any metallic structure that is not intended as a part of the cathodic protection system.

Galvanic Anode

A metal that is consumed to provide corrosion protection to another metal, when they are electrically connected in the environment I electrolyte.

Holiday

Damage to the coating that exposes the metal surface to the environment.

Impressed Current

Direct current supplied to a CP system by an external power source such as transformer I rectified commercial AC, batteries or electric power generators.

Interference

Any electrical disturbance on a metallic structure resulting from stray current.

Interference Bond

A metallic connection designed to control electrical current interchang between metallic systems.

IR Drop

The voltage across a resistance in accordance with Ohm's Law.

Metal

A metal Is an element that forms readily positive ions (cations) and has metallic bond.

Mixed Potential

A potential resulting from two or more electrochemical reactions, occurring simultaneously on one metal surface.

Pipe-to-Electrolyte Potential

The potential difference between the pipe metallic surface and electrolyte, that is measured with reference to an electrode in contact with the electrolyte.

Piping Networks

Underground steel piping system constructed inside facilities.

Polarization

The charge from the open-circuit potential as a result of current across the electrode I electrolyte interface.

Reference Electrode

An electrode, whose open-circuit potential is constant under similar conditions of measurement; and is used for measuring the relative potentials of other electrodes.

Sacrificial Anode

Refer to Galvanic Anode in clause 3.1.14 of this RP.

Shielding

Preventing or diverting the cathodic protection current from its intended path.

Shorted Pipeline Casing

A casing that is in direct metallic contact with the carrier pipe.

Stray Current

Current through paths rather than the intended path.

Stray-Current Corrosion

Corrosion resulting from flow of current through paths other than the intended circuit, e.g., by any extraneous current in the earth.

Voltage

An electromotive force or a difference in electrode potentials, expressed in volts.

Abbreviations

AJB CIPS CP DCVD HMWPE HSE ICCP IJ ITP

Anode Junction Box Close Interval Potential Survey Cathodic Protection Direct Current Voltage Degradation High Molecular Weight Polyethylene Health Safety and Environment Impressed Current Cathodic Protection Insulating Joint Inspection and Test Plan

JB Junction Box KOC Kuwait Oil Company (K.S.C.) MMO Metal Mixed Oxide PVDF Polyvinylidene Difluoride T/R Transformer Rectifier

DOC. NO. KOC-L-015 I I Pageloof41 1 1

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REFERENCE STANDARDS AND CODES

Conflicts

In the event of conflicts between this RP and the standards / codes referenced herein, or other contractual requirements, the most stringent requirement shall apply. In case further clarifications are required, the subject shall be brought to the attention of KOC Controlling Team.

In general, the sequence of precedence shall be followed as:

a) Kuwait Governmental Rules and Regulations b) KOC Technical Specifications c) This KOC RP ( KOC-L-015 ) d) International codes and standards e) Contractor's standards and specifications

List of Standards and Codes

The latest edition of the following standards, codes and specifications shall apply:

National / International Standards

ASTM G57 Test Method for Field Measurement of Soil Resistivity using the Wenner Four Electrode Method

BS 7361 Part 1 Cathodic Protection, Code of Practice for Land and Marine Applications

IS0 13623 Petroleum and Natural Gas lndusries - Pipeline Transportation Systems

IS0 15589-1 Petroleum and Natural Gas lndusries - Cathodic Protection of Pipeline Transportation Systems Part 1 : Onland Pipelines

NACE RP0104 The Use of Coupons for Cathodic Protection Monitoring Applications

NACE RP 0169 Control of External Corrosion on Underground or Submerged Metallic Piping Systems

NACE RP 0177 Mitigation of Alternating Current and Lightning Effects on Metallic Structures and Corrosion Control System

DOC. NO. KOC-L-015 11 Page I I of 41 REV. 1

NACE RP 0200

NACE RP 0286

NACE RP 0502

NACE RP 0572

NACE TM 0101

NACE TM 0497

KOC Standards

KOC-C-003

KOC-E-004 Parts 1-6

KOC-E-008

Steel-Cased Pipeline Practices

The Electrical Isolation of Cathodically Protected Pipelines

Pipeline External Corrosion Direct Assessment Methodology

Design, Installation, Operation and Maintenance of Impressed Current Deep Ground Beds

Measurement Techniques Related to Criteria for Cathodic Protection

Measurement Techniques Related to Criteria for Cathodic Protection on Underground or Submerged Metallic Piping Systems

KOC Standard for Geotechnical Investigation (Onshore)

KOC Recommended Practice for Selection, lnstallation and Maintenance of Electrical Equipment in Hazardous Areas

KOC Recommended Practice for Design, Selection and Installation of Electric Cables, Cable Systems and Wiring

KOC Standard for Electrical Power Cables and Wiring

KOC Standard for Packing, Marking and Documentation

KOC Standard for Basic Design Data

KOC Recommended Practice for the Protection of KOC Services: Clearance Requirements for Buried Pipelines & Piping, Cables, Underground Structures and Buildings

KOC Standard for Cathodic Protection Material Specification

KOC Standard for Painting / Coating of Metal Surfaces - New Construction

KOC Standard for Internal Coating of Pipelines

KOC Fire & Safety Regulations (Latest)

DOC. NO. KOC-L-015 11 Page 12 of 41 REV. 1

Special consideration shall be given to the presence of sulfides, bacteria, disbonded coatings, thermal applied coatings, elevated temperatures, shielding, acid environments, and dissimilar metals.

ENVIRONMENTAL CONDITIONS

The environment of Kuwait is severe, and must be considered carefully for selection and before procurement of plant and equipment.

For environmental conditions in Kuwait, refer to KOC Standard for Basic Design Data, (KOC-G-OO7), which provides the detailed design information regarding the environmental, site and utility supply conditions prevailing throughout the KOC facilities.

HEALTH, SAFETY AND ENVIRONMENT

The designer 1 contractor shall assure the compliance of necessary HSE design requirements to minimize the consequences and impacts of hazards on the surrounding environment and adjoining facilities.

All relevant safety requirements of the KOC Fire & Safety Regulations and the KOC Health, Safety and Environment Management System (HSE MS) shall be adhered to within KOC areas.

The Cathodic Protection Systems shall be installed and continuously operated under safe conditions.

CATHODIC PROTECTION SYSTEM DESIGN

Desiqn Considerations

The corrosion control of buried or underground steel pipelines 1 piping networks shall be achieved by suitable protective coatings, supplemented by cathodic protection system.

The design for cathodic protection system shall be based on the corrosion historical data along with the operational parameters as well as surrounding environment (soil condition).

Special considerations shall be given to the location of the pipeline with respect to the population areas, other existing facilities or pipelines, and stray current caused by other systems.

Basic Design Requirements

lmpressed Current Cathodic Protection (ICCP) systems shall be used to protect KOC buried and immersed metallic assets.

Sacrificial anode systems may be used for localized protection for some portions of the piping system, such as buried pipe sleeves. This has to be identified by the Designer of CP system. Proposal to use sacrificial anode systems shall require prior KOC approval.

Temporary CP system shall be installed to ensure that all buried steel structures are protected from the time of their installation until the permanent CP facilities are operational. The temporary anode cables shall be terminated in a Junction Box.

Prior to commissioning the permanent CP facilities, the temporary CP shall be disconnected.

The Contractor shall ensure that the integrity of the existing impressed current cathodic protection (CP) system for the pipelines and other buried metallic assets is intact after the installation of the works.

Each pipeline, flow lines and piping run shall be provided with a minimum of one (1) separate cathode (negative) connection point. The actual number of connection points shall be considered to control the current flow and to provide protection by uniform potentials over the entire cathode facility.

Junction box / boxes shall be utilized for cable connection, anodes distribution, and current flow control.

It is recommended that the ICCP groundbed be designed so that the total anode groundbed resistance is 1 ohm.

Design Life

The minimum design life of the lmpressed Current Cathodic Protection (ICCP) system is 35 years.

The minimum design life of the Sacrificial Anode system is 10 years.

The minimum design life of the Temporary CP system shall be the longer period of either at least two (2) years, or the maximum period when the permanent CP facilities are installed and operational.

The additional increase in current requirement with time shall be considered within the design.

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Potential Range

The pipe I structure-to-soil potential shall be measured by using a Copper 1

Copper Sulphate (Cu / CuS04) saturated reference electrode.

The minimum negative accepted value at any point of the protection potential for steel (IR corrected, instant OFF) shall be - 0.85 V (Cu I CuS04).

At certain areas such as subkha and other water saturated areas, the minimum negative accepted value at any point of the protection potential for steel (IR corrected, instant OFF) shall be reduced to - 0.95 V (Cu I CuS04).

The maximum negative potential value permissible (IR corrected, instant OFF) shall not exceed -1.2 V (Cu I CuS04).

The maximum "ON" negative value permissible shall be - 2.5 V (Cu 1 CuS04) or depends on the pipeline coating manufacturer's recommendations.

A minimum negative cathodic polarization of 100 mV method may be applied for pipelines only as an alternative acceptance criterion in specific, irregular instances and at the sole discretion of KOC. However, the criterion stated in the above sub-clauses is the preferred minimum negative acceptance value.

The design shall consider the maximum negative potential value that will not lead to the coating disbondment.

Current Requirements and Density

For design purposes, the minimum protective current density shall be:

2 a) 0.5 mAlm for buried piping 1 pipelines where high quality coating

systems (e.g. fusion bonded epoxy, high build epoxy or three layers extruded polyethylene) are applied.

2 b) 3.0 mAlm for buried piping I pipelines where coal tar enamel or tape

wrap coating are applied.

The design of all impressed current CP systems shall include a minimum 30% excess current capacity over the design life to compensate for coating degradation.

Current Drainage

The following can drain current from the CP system and a current allowance shall be included:

- Earth grid - Steel rebar in reinforced concrete bases

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Test Coupon

Coupon Test Stations shall be provided at both ends of the pipelines and at maximum intervals of 5 km (5000 m) along the pipeline length. If the pipeline length is less than 5 km (5000 m), three (3) test stations shall be provided as minimum.

The Coupon Test Station shall be dual coupons type. One shall be for IR free potential measurement, while the other shall be for native potential measurement as per NACE RP 0104.

The Test Coupons shall be placed at pipe depth, having the same pipeline backfill.

The Test Coupon material shall have the same grade of the pipe material.

The Coupon Test Station shall include a switch between the polarized coupon and the pipe connections to facilitate interruption of the coupon.

- Cables Armours - Pipe rack footings - Module bases

The steel rebar in reinforced concrete shall be electrically continuous to avoid problems with preferential corrosion at discontinuities. Typically, tightened binding wire used in assembling cages will generally provide sufficient connection as per BS 7361 Part 1.

For design purposes the minimum drainage current shall be 40 mA I m2 for buried copper earth conductors.

Bonding

The Contractor shall supply and install bonding stations for the new pipeline. The bonding will use 25 mm2 copper cables and shall be housed in aboveground junction with shunt variable resistors box as follows:

Where the new pipeline runs parallel to the existing pipelines, at every two (2) km intervals.

Where the pipeline crosses the existing buried pipelines.

If the new pipeline crosses a pendant line, the Contractor shall consider using Sacrificial anodes. The Sacrificial anodes in addition to a diode, shall be connected to the new pipeline in a junction box.

Bonding stations shall limit the drain current from the existing TIR unit to be not more than 10% of the TIR rated output current.

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Test Post

Test Post Stations shall be provided along the pipelines at maximum intervals of 1 km (1000 m) along the pipeline length. If the pipeline length is less than 1 km (I000 m), three (3) test stations shall be provided as minimum.

Additional test posts shall be installed at the following locations:

a) Where the pipeline is intersected with other pipeline I lines, test posts shall be installed at the intersection area for both pipelines.

b) Both sides of isolating joints.

c) At both sides of the valve station.

d) On both sides of carrier pipe and the sleeve at both sides of the road, at the crossing.

e) At the galvanic I sacrificial anode installation.

f) At the stray current areas.

g) At a location that a change in the pipe wall thickness or diameter occurs.

h) At hot spot area.

i) At the drain points.

Appropriate and representative number of test posts shall be installed for the underground piping system inside the plants. The number and location of the Test Posts shall be subject to KOC approval.

The test post shall have double 10 mm2 copper cables connected to the pipeline by using thermit 1 cad weld as indicated in clause 7.15.2 of this RP.

Road Crossinas

Pipelines and piping systems shall be protected by metallic sleeves at road crossings.

Sleeves shall be electrically insulated from the pipe, using insulated spacers placed at regular intervals; and shall be sealed at each end to prevent ingress of soil I water.

Two vent pipes shall be installed at both ends of the sleeve pipe.

The length of pipe within the sleeve shall be protected by zinc ribbon sacrificial anodes to combat the scenario of failing end seals of the casing..

DOC. NO. KOC-L-015 11 Page 17 of 41 I 1

The pipe sleeve shall be cathodically protected by pre-packaged magnesium sacrificial anodes.

The sleeve shall be internally coated with phenolic epoxy as per KOC-P-005 and externally coated by using high build epoxy coating as per KOC-P-004.

The sleeve isolators and end seals material shall be selected as per clause 6.4 of NACE RP 0286.

Road crossing shall be designed as per NACE RP 0200 and NACE RP 0286 section 4,

Overhead Power Transmission Lines

Testing shall be carried out in accordance with NACE RP 0177 to evaluate the effects of induced AC current and voltage on the cathodic protection system, pipeline and the affect on safety of personnel during pipeline construction. Remedial measures shall be implemented in accordance with NACE RP 0177.

Soil Resistivitv

Soil Resistivity of the plant area is the subject of a separate and independent survey, the results of which shall be made available for optimum design and calculations for the CP system.

The survey procedure shall take into account the surface soil conditions, required survey depth and planned finished grade levels at the site.

Soil resistivity or conductivity measurements for deep anode beds are recommended, but not mandatory before the borehole is drilled. In any case, final borehole depth and anode placement shall be approved by KOC during construction, based on measurements of drill stem resistance and test anode resistance, taken during drilling of the anode borehole.

Soil resistivity data used in CP design calculations shall include the affect of seasonal weather conditions whereby the most onerous data is used.

Electrical Continuity

The pipeline / piping shall be electrically continuous over the total length but excluding connections to other pipelines. Where an insulating device is provided, a controllable bonding connection with variable resistors and current shunts shall be provided across the insulating device.

Electrical Isolation

Electrical isolation of all newly constructed pipelines / piping is recommended via insulating flanges, which shall be properly selected to comply with the pipe design parameter.

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Aboveground Cable Connections

Electrical isolation flanges are recommended to be installed at the following location(s):

a) Connection points of new pipe with existing pipelines.

b) Connection points of new pipe with gathering centers, booster stations, manifolds, tanks, pump stations, and metering stations.

c) When connecting the pipe to a device, that requires electrical grounding.

d) Connecting pipes made of dissimilar metals.

Electrical isolation may require the use of an internally coated pipe spool in conjunction with an insulating flange kit, dependent on the conductivity of fluid within the pipe. If required, the pipe spool shall be coated with phenolic epoxy as per KOC-P-005. The Contractor shall assess the need for such arrangement and make appropriate provision. Internally coated pipe spools shall be of sufficient length to prevent current flow across the insulated flange.

Additional insulating flange kits, insulating glands and similar equipment shall be installed, as necessary, to prevent shorting of electrical isolation by instrumentation, electrical, and civil requirements. Such isolation points shall have provisions for shorting with bond boxes 1 cables during commissioning and operations.

Adequate separation shall be maintained between the underground pipe and the underground high voltage N C cables as per KOC-L-002.

Insulating devices shall not be installed in any buried section of a pipeline or piping.

Each insulating flange and joint shall be fitted with an appropriate device to provide electrical isolation of CP DC voltages and currents, but provide a path for the safe passage of AC fault and lightning currents.

The isolating device shall be tested as per NACE RP 0286, Section 8.

All steel rebar in reinforced concrete, earthing, etc. shall be electrically isolated from the piping I pipeline to be protected under this RP.

Electrical Connections

a) Aboveground cable connections to pipeline / piping and structures shall be by means of bolted cable lug connections to carbon steel plates welded to the structure. The steel plates shall be welded to the structure prior to the application of coating.

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7.15.3 The connection shall be tested for mechanical strength and electrical continuity.

7.16 Deep Well Anode Ground Beds

7.16.1 Only deep well ground beds shall be used to cathodically protect pipelines and piping networks, or as recommended by this RP. Shallow ground bed can be utilized only where deep ground bed can not be used.

7.16.2 Anode ground beds shall be located such that the nearest cathode structure is not within the anode voltage gradient. No anodes shall be placed beneath concrete or paved road.

b) The steel plate and weld method shall be compatible with the structure material. The steel plate coating shall be removed to facilitate the bolted cable connection. The bolted cable connection shall be profiled, and tape wrapped with grease impregnated tape.

7.15.2 Underground Cable Connection

Belowground cable connections to piping and pipelines shall be made by means of thermit / cad welding.

A section of the pipe coating required for connections shall be removed to the minimum area, not more than 100 mm x 100 mm from the top of pipe.

Suitable tools and method shall be used for cutting and peeling back the coating to avoid any damage to bare metal and the surrounding coating (percussion tools or grinders, shall not be used for this purpose).

This pipe area shall be thoroughly cleaned to a near white metal finish Sa 2%, (NACE 2) surface preparation.

Thermit / cad welding process shall be such that copper penetration into the pipeline material shall not be deeper than one (1) mm, and that the hardness shall remain inside the original pipeline requirements.

Thermit / cad weld charges shall be no more than 15 grams, and cable cores shall be not larger than 16 sq.mm. If heavier cables need to be attached, the core shall be separated into smaller strands of less than 16 sq. mm each and welded separately.

Upon completion of the weld, the pipe coating shall be repaired in accordance with the applicable KOC Specification / Standard for pipe coating repairs.

A holiday detector shall be used to verify that the applied coating and wrapping have no holidays.

All cables shall be laid in single runs. No underground cable-to-cable splicing connections shall be made.

M e r e new pipelines I piping run within the calculated voltage gradient of an existing anode ground bed, stray current mitigation shall be provided.

Either a bonding station shall be provided between the pipeline and the existing ground bed transformer-rectifier (T/R) unit negative connection or sacrificial anodes shall be used at "hot spots". Bonding stations should limit the drain current from the existing TIR unit to not more than 10% of the TIR rated output current.

At1 anode ground beds shall have ground bed marker posts with the ground bed name, tag number and depth on a stainless steel plate.

Deep ground beds may be located in congested areas, where shallow ground beds will pose geographic, topographic, interference, or right-of way problems.

The depth of the anode column (uppermost anode) shall be 30 m below the water table.

The preferred anode material for all deep well anode ground beds is mixed metal oxide coated Titanium. However, alternate anode material may also be utilized if justified. All anodes shall be of tubular configuration.

The Vendor shall submit the calculation of quantity of backfill material required, which shall include quantity up to the top of the anode (active length) and spare quantity above the active column.

Spare amount of backfill will be equal to the amount of backfill to be consumed in design life assuming 1.0 kg per ampere per year. Total depth of the deep well hole shall be increased if required to avoid the interference with the neighboring structures.

Deep vertical anode ground beds shall be in accordance with NACE RP-0572 and KOC Drawing No. CP-003.

Galvanic I Sacrificial Anode System

The use of a galvanic/ sacrificial anode system shall be subject to KOC approval, and may be considered for the following cases:

a) Localized "hot-spot" protection to supplement ICCP systems.

b) Road crossing casing.

c) Cathodic protection for the pipeline section inside the sleeve.

d) Temporary CP systems during construction periods.

e) Underground road-crossing areas of above ground pipelines.

9 Stray current areas.

Prior to the selection of cathodic protection by sacrificial anodes, soil resistivity shall be measured to determine, if the resistivity is sufficiently low to allow successful application of sacrificial anodes; and to calculate the required weight of the sacrificial anodes.

Only Magnesium anodes shall be used and supplied in low resistivity chemical backfill package in water proof container.

CATHODIC PROTECTION DESIGNER & INSTALLER

The design and installation of the CP system shall be carried out by a Cathodic Protection Specialized Contractor, subject to KOC approval.

The design and commissioning of cathodic protection systems shall be carried out by a Cathodic Protection Specialist Engineer (NACE certified as CP- Specialist or equivalent).

A NACE certified Technician of Level II or equivalent shall present at all time at site to supervise the installation of all the parts of the cathodic protection system.

MATERIALS AND EQUIPMENT REQUIREMENTS

Selection of Materials and Equipment

All cathodic protection materials shall be as per "KOC Standard for Cathodic Protection Material Specification" (KOC-L-012).

Anodes

The anode material shall be catalyzed Titanium anode ribbon coated with highly conductive Mixed Metal Oxide (MMO). The Titanium base shall be of ASTM 8265 Gradel. MMO shall comprise a mixture of Iridium and Tantalum oxides.

The Vendor shall provide technical data sheet of the proposed MMO anode clearly mentioning the oxides, MMO application method, and thickness of the MMO, breakdown voltage across the substrate oxide and maximum voltage across the MMO film.

The MMO coating shall be dimensionally stable, and shall have a proven track record that their resistances to earth do not increase with time. The Manufacturer test certificate shall provide all the above information including a test for each of the anode under various charge densities.

Anodes shall be installed as a number of discrete strings, each comprising a maximum of two (2) anodes, with each string connected to an anode junction box adjacent to the head of the ground bed.

MMO anode shall be resistant against corrosion, acid and have strong abrasion properties.

Cables

Cables shall be specified, supplied and installed in accordance with KOC Standards KOC-E-008 & KOC-E-023 as specified in clause 4.2.2 of this RP.

Anode tails shall be of PVDF I HMWPE (KYNA* I FLUORO POLYMER + HMWPE) suitable to resist chlorine. Cables from junction box shall be of PVDF or HMWPE.

The cable sizes shall be determined to suit the current rating and voltage drop requirements of the CP design. However, the following cable types with minimum sizes shall be used:

a) Anode main cables - 50 mm2 b) Anode string cables - 25 mm2 c) Cathode main cables - 50 mm2 d) Bonding cables - 25 mm2 e) Test cables - 10rnm2 f ) Sacrificial anode cable - 10 mm2

Positive and negative cables shall be of RED and BLACK color respectively. Reference electrode cable shall be of different color.

All cables shall be clearly identified and numbered. Tagging shall be provided clearly identifying their purpose or point of origin and termination.

The cable and all their connections shall be considered as critical. Complete electrical isolation shall be essential between the cable I splice I connection and the environment. Water ingress or soil contact must not occur.

All cables shall be laid in single runs. No cable to cable splicing shall be permitted.

AC supply cable shall be armoured, direct burial type of suitable size. The Contractor shall provide voltage drop calculations to substantiate cable sizing.

Transformer Rectifier (TIR)

The TIR unit output ratings for external CP systems shall satisfy the following requirements:

a) A/C Input : 440V + 6%, 4 wire, 50 Hz & 2.5%.

b) Minimum Output Voltage : 50V DC, or as specified by design if higher rate is required.

DOC. NO. KOC-L-015 I 1 1 REV. 1

c) Minimum Output Current Rating: 50A DC, or as specified by design if higher rate is required.

Junction Boxes

Junction boxes shall be certified for EEX 'dl, IIB T3 Zone 1 & 2 use in classified areas with minimum degree of protection as IP 55. The system design shall have the following types of junction boxes:

a) AJB: Anode junction boxes

b) TJB: Test junction boxes

c) NJB: Negative junction boxes

Inside the AJB, TJB & NJB, layout drawing with a glass cover shall be fixed to show the arrangement of permanent reference electrodes and power feed cables.

Carbon Backfill

Carbonaceous backfill shall be suitable for use with cathodic protection anodes, comprising hard round grain carbon to pass sieve No. 16; and shall be dust free, with appropriate carbon lubricant added to bulk density around 70 lbslft3. The recommended backfill is Loresco SC-3 or approved equivalent.

INSTALLATION OF CP SYSTEM

Deep Ground Bed Installations

Prier to installations, all materials including transformers I rectifiers, cables, anodes, backfill, and junction boxes shall be inspected to ensure that they are in good condition.

All electrical connections shall be made safe and secured.

The Cathodic Protection system shall not be installed in the perimeter of flare and burn pit area.

The transformer 1 rectifier shall be installed in secured, fenced and accessible area as per KOC Dwg. No. KOC-CP-004. External AC cut-off switch shall be connected. The transformer 1 rectifier body shall be grounded in accordance with the requirements given in KOC-E-024.

Anodes shall be installed with centralizers in low resistivity carbonaceous backfill in such a way that the anode is in the center of the bore hole. Two (2) Nos. of centralizers shall be used for anodes of length 1000 mm and more.

A perforated vent pipe shall be installed alongside the anode string(s) and covered by a geo-textile woven fabric to avoid backfill blocking the perforations.


L

Samples of installation check lists are attached in Appendix B of this RP. The Contractor shall make suitable additions or changes for the particular job.

The backfill material shall be specially formulated to facilitate pumping from bottom with the minimum risk of air entrapment. Settling and compaction can be used to improve ground bed performance and life. The desirable properties for the backfill material shall be as per NACE RP 0572.

The anode cable shall be connected to the positive terminal of the transformer 1 rectifier, while the negative terminal of the transformer / rectifier shall be connected to the structure to be protected. This has to be confirmed after energizing the CP system by suitable measurements.

All electrical connections shall be as per clause 7.15 of this RP.

The negative and positive CP cables shall laid at 700 mm depth. After installation the cables shall be cover with cables tiles and cable warning tapes and then backfilling with soil to the original condition.

Aboveground cable markers shall be installed to show the cable routes.

Galvanic 1 Sacrificial Anode Installations

Prior to installation, the waterproof container shall be removed and the anode package shall be inspected to confirm its good condition.

The anode lead wire shall be inspected to ensure that it is securely connected to the anode.

Prior to backfilling, it shall be confirmed that the anode is centered in the backfill package.

The anode shall be connected to the cathode structure through junction boxes, installed aboveground.

Electrical connections shall be according to clause 7.15 of this RP.

Materials and design requirements shall be checked for conformance to this RP, and the reference standards 1 specifications prior to installation.

The Contractor shall submit the proposed materials for KOC approval with all relevant information. Before start of installation, all materials shall be inspected and verified with Manufacturer's test certificates and approved ITP.

DOC. NO. KOC-L-015 I 1 Page 25 of 41 11 R N . 1

PRE-COMMISSIONING & FINAL COMMISSIONING

General

Pre-commissioning shall be carried out by CP Engineer to ensure high quality performance.

All terminations inside the junction boxes, test boxes and T R shall be checked.

Anode grid resistance shall be checked.

Natural Potential

Prior to energize the CP system installed on newly constructed pipeline, the structure to soil potential shall be measured at all the measuring points, insulating joints etc.

Preliminary Adjustment

Before energizing, the TIR output shall be kept at 10% of design current output. After 48 hours, potential shall be measured and the transformer 1 rectifier output shall be increased, if required, in order to meet the protection criteria indicated in clause 7.4 of this RP.

Potential Measurement

Following the adjustment of CP station outputs to meet the structure to soil potentials, a complete set of potentials shall be recorded at all the measuring points and other positions measured earlier.

Should the potential of metallic casings be more negative than their natural potential previously recorded, then the Contractor shall investigate the reason for the low resistance between casing and carrier pipe.

Close interval potential survey (CIPS) and direct current voltage degradation (DCVD) surveys shall be carried out, after all adjustments to the CP system are made as per NACE RP 0502 "Pipeline External Corrosion Direct Assessment Methodology". Prior to any DCVD and CIP surveys, the Contractor shall develop a Survey Plan and Procedures and submit the same for KOC approval.

The results of ClPS and DCVD surveys shall be analyzed; and the Contractor's proposal for proper remedial actions shall be recommended and carried out after KOC approval.

Interference Testing

The Contractor shall perform all interference testing; and shall be responsible to contact all relevant authorities and arrange for their presence at all the required tests.

1 DOC. NO. KOC-t-015 Page 26 of 41 I REV. 1

Should any interference test results show a positive change in the potential of a foreign installation or structure of more than + 20 mV, the Contractor shall take remedial action to eliminate the interaction.

Preferably, interference should be overcome by the use of adjustable resistors and diodes installed inside a bond station junction box, between the bonding cable from the pipeline and the foreign structure.

Final Commissioning

Final commissioning shall consist of the following:

a) Measuring structure to soil potentials at all measuring points by an approved method.

b) Measuring total current output from each station and the current in each direction where current measurements are possible.

c) Measuring settings of power sources : transformer I rectifiers.

d) Measuring current and resistance, if remedial bond fitted.

e) Calibrating ail current measurement points.

QUALITY ASSURANCE I QUALlN CONTROL

The Manufacturer / Contractor shall operate a quality system to ensure that the requirements of this Recommended Practice are achieved. The quality system shall be preferably based on IS0 9000 series of standards; and the Manufacturer / Contractor shall demonstrate compliance by providing a copy of the accredited certificate or the Manufacture's / Contractor's quality manual.

Verification of the Manufacturer's / Contractor's quality system is normally part of the pre-qualification procedure, and it is therefore not detailed in the core text of this document.

The Contractor shall submit their Quality System Manual & Quality Assurance Plan that includes all the activities in chronological order with responsibilities. Inspection & Test Plan (ITP) for CP system design, procurement, installation and commissioning shall be submitted for KOC approval. KOC standard project qualtty assurance/quality control requirements shall be adhered to.

A typical ITP is attached in Appendix A of this RP. The Contractor shall make suitable additions or changes for the particular job work.

MARKING

For all relevant requirements on Marking / Packing, refer to KOC Standard KOC- G-004.

DELIVERABLES

General

DOC. NO. KOC-L-015

All correspondence, drawings, instructions, data sheets, design calculations, or any other written information shall be in English Language. In the case of dual languages, one language shall be English.

All dimensions, units or measurements, physical constant, etc. shall be in SI units, unless otherwise specified.

I Page 27 of 41

Calculations and Documentation

REV. 1

The following documentation, drawings, inspection and test plans and check lists shall be submitted for KOC review and approval:

Schematic drawings of the entire structure and the CP systems; Anode ground bed detail drawings; TIR unit electrical schematic diagrams; TIR unit general arrangement and mounting detail drawings; Ground bed layout drawing; Anode material; CP cable layout drawing & sizing, color schedule; Test facility detail drawings; Junction boxes and support stands construction drawings; Junction boxes termination drawings; Piping cable connection detail drawings; Piping interactions survey report and remedial measures required; CP electrical installation specification; Installation procedure; Pre-commissioning and Final Commissioning procedures; Operation and maintenance procedures; Inspection & Test Plan.

CP calculations shall include:

a) Protected structure surface area; b) Anode ground bed resistance, output current, anode mass and number; c) Protected structure CP current demand; d) Foreign structure CP drain current; e) CP TIR unit voltage including both the anode and cathode circuit; f ) CP TIR unit current rating; g) Soil resistivity calculations.

AS-BUILT DRAWINGS

Construction I design drawings shall be updated to reflect field modifications to the original design, showing the as-built cathodic protection system.

15.2 The as-built drawings shall establish the coordinate (Geographic Information System- GIs) locations of the following:

The pipeline route. Casings. Test posts. Electrical bonding. Interference locations. Electrical isolation locations. Cables. Junction boxes. Ground beds. Transformer 1 Rectifiers.

15.3 The Contractor shall also update the existing CP drawings of the particular facility 1 area incorporating the new system.

16.0 APPENDICES

Appendix - A : Typical Inspection and Test Plan for Deep Groundbed Cathodic Protection System

Appendix - B : Typical Check Lists for

1. Deep Groundbed Cathodic Protection System 2. Road Crossing Cathodic Protection System 3. Boxes (J.B) and Test Box 4. TR I Rectifier 5. Pre-Commissioning Check List for Impressed Current

Cathodic Protection System (Pipelines)

Appendix - C : Typical Drawings for Cathodic Protection

Appendix-l : Typ. Deep Anode Ground Bed General Arrangement (CP-003 Rev.0)

Appendix 11 : Typ. Single & Double T.R Unit Compound Earthing Layout (CP-004 Rev.0)

Appendix Ill : Typ. Cathodic Protection System for piping I Pipelines (CP-006 Rev.0)

APPENDIX A : TYPICAL INSPECTION AND TEST PLAN FOR

DEEP GROUNDBED CATHODIC PROTECTION SYSTEM

No.

- 1

Activity Description

Design and drawing Pre-inspection Meeting

Material Purchasing

Material Inspection

Drilling of Ground Bed Casing Preparation, Welding and lnstall&ion Anode Support pipe welding of bottom plate, centralizer and anode supportshoe

Installation of Anode, Cable and Vent pipe Preparation of Coke Breeze Backfill and backfilling the active area

Backfilling of non active area with gravel

Anode Junction Box Installation

Negative cable installation

Negative Cable Junction Box Installation

TIR Installation

Pre-Commissioning

Commissioning

Review Surveillance Witness

Reference Document

Acceptance Inspection Criteria Record


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-

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-

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R : S : W :

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ins1

Sub- Contractor

dion Status

izq-z

APPENDIX B : TYPICAL CHECK LISTS

1.0 Deep Ground Bed Protection System 2.0 Road Crossing Cathodic Protection System 3.0 Boxes (J.8 and Test Box) 4.0 TR / Rectifier 5.0 Pre-commissioning Checklist for Impressed Current Cathodic

Protection System (Pipelines)

APPENDiX B (c0ntd.i) : TYPICAL INSPECTION AND TEST SHEET

1. DEEP GROUNDBED CATHODIC PROTECTION SYSTEM

TYPICAL CHECK LIST

Deep Ground Bed No. : Date:

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1 DOC. NO. KOC-L-015 ! Page 31 of 41 11 REV. I

Comments:

Activity Description

Location of Deep Ground Bed

Depth Borehole to the required length ( M f Welding of Casing and Installation

Casing Length ( M )

Welding of Support Pipe Plate, Centralizers and Anodes Support Shoe

Suppolt Pipe Length ( M )

Attach Anode to Support Pipe and lnstallation

Anode Quantity ( EA )

Anode Spacing ( M )

Vent Pipe Length ( M )

Coke Breeze Backfill

Rough Sand or Gravel Backfill

Anode Bed sealed as per approved drawing

Resistance Measurement

Anode Bed Resistance Measurement I

Results

Acc.1 Rej.1 NA

Sub-contractor

Note - Additional i tems m a y be added b y KOC a t a n y stage o f t h e work and shall be implemented b y t h e Contractor.

Abbreviations -

Acc. : Accepted ; Rej. : Rejec ted ; NA : Not Applicable

Name

Signature

Date

Sub- Contractor

Contractor

1 KOC

Inspection

Contractor KOC

APPENDIX B (c0ntd.l) : TYPICAL INSPECTION AND TEST SHEET

2. ROAD CROSSING CATHODIC PROTECTION SYSTEM

TYPICAL CHECK LIST

Road Crossing No: Date:

DOC. NO. KOC-L-015 I Page 32 of 41 REV. 1 I

Results Inspection Sub-

Activity Description Acc.1 Rej.1 NA Contractor contractor KOC Location of Road Crossing as per approved drawing

Check the Nos. of Insulation Spacers 1 Installation of Wedges for Anode Check the Length (m) of Zinc Ribbon Anode I Position of Zinc Ribbon Anode (Typ. 5 and 7

5 1 o'clock) I 1 I I Non-metallic Straps for fixing Anode & Wedge (

I 6 1 in position I 1 I

I Check discontinuity between Anode and I 7 Carrier Pipe

Check discontinuity between Carrier Pipe and 8 Casing Pipe

Continuity test for Zinc Ribbon Anode I 1 I Cable connection to Zinc Ribbon Anode. 1 I I 1

11 Cad Welding check

12 Check Installation of End Seal lnstallation of Test Box and Connection of

13 Cables as per approved drawing 14 Cable clearly identified at each cable ends

Comments:

Sub-contractor Contractor KOC

Name

Signature I

Date 1

Note - Additional items may be added by KOC at any stage of the work and shall be implemented by the Contractor.

Abbreviations -

Acc. : Accepted ; Rej. : Rejected ; NA : Not Applicable

APPENDIX B (contd.1) : TYPICAL INSPECTION AND TEST SHEET

3. BOXES (J.6 AND TEST BOX) : TYPICAL CHECK LIST

Tank No: Date:

Results Inspection

Sub-contractor Contractor No. Description Acc, Rej, NIA KOC

1 Support as per detail drawings

2 Foundation Location and Details correct

3 Installation as details drawing Cable connections as per Termination

4 Diagram.

5 Cables installed & Termination complete.

6 All Cables clearly identified with tags.

Comments: 1

Sub-contractor Contractor KOC I Name

Signature

Date 1 Note - Additional items may be added by KOC at any stage of the work and shall be implemented

by the Contractor.

Abbreviations -

Acc. : Accepted ; Rej. : Rejected ; NA : Not Applicable

1 DOC. NO. KOC-L-015 ! Page 34 of 41 1 1 1 -

APPENDIX B (contd.1) :

4. TR I RECTIFIER - TYPICAL CHECK LIST

Comments: I

13

14

15

DC output current

Negative cable connection

Positive cable connection


Name

Signature

Date

/ Abbreviations -

I Ace. : Accepted ; Rej. : Rejected ; NA : Not Applicable

Sub-contractor Contractor KOC

APPENDIX B (contd.1) : TYPICAL INSPECTION AND TEST SHEET

DOC. NO. KOC-L-015

5. PRE-COMMISSIONING CHECKLIST FOR IMPRESSED CURRENT

CATHODIC PROTECTION SYSTEM (PIPELINES)

Page 35 of 41

I No. 1 Descri~tion

REV. 1

1.0 o

/ in a Junction box. f Check if all JlBs and test posts are marked and labeled

Pre-commissioning Check if number and location of the anode are as per

1 inside and outside. o 1 Check if all JlBs shunt and resistor rating as per

drawing. Check if all anodes cable are terminated and labeled in the anode Junction Box (AJB). Check if the negative cable (from structure) is terminated

I specifications. 1 Check if all TIRs capacity, location, labeling, oil level,

silica gel are as per specification. Check if the T/R positive cable is connected to anode JIB and negative cable is connected to Structure JIB. Check if all reference cells and coupons are installed as

I to the carrier pipe. I Verify that no short circuit exists between the casing,

0

per drawings. Check if at road crossing the Mg anode is NOT connected to the casing and Zn anode is NOT connected

I short circuit. 1 Check If all bonding cables to foreign pipelines are not I connected.

0 1 Check If all temporary cathodic protection system is

carrier pipe and Zn anode. Check if the isolation joint (IJ) are installed and there is no

/ disconnected. a ] Witness potential natural reading for all test posts before

1 1 energizing the TIRs.

After energizing the TIRs. Verify if TIRs meters are functioning. Witness if potential "On/Off' readings are meeting the protection criterion for all test posts, JIB & 1J. After bonding cables to foreign pipelines are connected, Mg anode is connected to the casing and Zn anode is connected to the carrier pipe, witness if potential "OnlOff' readings are meeting the protection criterion for all test

Notes:

Reviewed By ................................. Approved by ...................... (Snr Engr)

posts, JIB & i J. 1 I Check for any interference.


APPENDIX C : TYPICAL DRAWINGS FOR CATHODIC PROTECTJON

CP-003 Cathodic Protection Typical Deep Anode Ground Bed General Arrangement

CP-004 Cathodic Protection Typical Single and Double T.R. Unit Compound Earthing Layout

CP-006 Typical Cathodic Protection System for Piping / Pipelines

DOC. NO. KOC-1-015 11 Page 38 of 41 11 REV. 1

Appendix II : Typ. Single & Double T.R Unit Compound Earthing Layout (CP-004 Rev.0)


Appendix Ill : Typ. Cathodic Protection System for Piping I Pipelines (CP-006 Rev.0)

DOC. NO. KOC-L-015 Page 40 of 41 11 REV. 1

ACKNOWLEDGEMENT

This RP has been approved by the Standards Technical Committee (STC) consisting of the following:

Mr. AJRedha Al-Haddad Standards Team Mr. Mohammad Emam Insp. & Corr. Team (S&E) Mr. S. Kumar Standards Team Mr. A. Unnikrishnan Standards Team Mr. Khalaf Hamada Design Team Mr. N. Ramanathan Export Facilities Team Mr. Ali Hassan AI-Failakawi HSE System Team Mr. Daniel Pino Utilities Team Mr. Abdul R. Al-Shamari Insp. & Corr. Team (N&WK) Mr. Khalid Al-Ahmad Gen. Project Team Mr. Abdul Aziz Akbar Project Mgmt. Team (NK) Mr. Moataz Khalaf Information System Team

Chairman Deputy Chairman Secretary1 Member Member Member Member Member Member Member Member Member Member

The draft of this RP had been circulated to the KOC User Teams for review and the responses were received from the following:

ENGINEERING GROUP TECHNICAL SERVICES DIRECTORATE

Team Leader Design

MAJOR PROJECTS GROUP (I)

Team Leader Export Fac. Projects

OPERATIONS GROUP (SK)

Team Leader Opns. Tech. Svcs.

Team Leader Maintenance

OPERATIONS GROUP (EK)


AHMADI SERVICES GROUP

Team Leader Utilities

Team Leader HSE (TS)

MAJOR PROJECTS GROUP (11)

Team Leader Project Support

OPERATIONS GROUP (WK)


OPERATIONS GROUP (NK)


GAS MGMT GROUP (SEK]

Team Leader Gas Opns.

Team Leader Project Design Team Leader Consumer Networks

HSE GROUP (SEK) EXPORT & MARINE OPNS GROUP

Team Leader HSE (SEK) Team Leader Export Svcs.

HSE GROUP

Team Leader Safety

Team Leader HSE Systems

Team Leader H&E

Task Force Responsible for this Recommended Practice

The preparation of this Recommended Practice has been entrusted by the Standards Technical Committee (STC) of the Task Force No. (TF-CPl02) comprising of the following members:

Mr. Abdul R. Al Shamari Insp. & Corr. (NWK) TF Leader Tel No. 61426 Mr. Hasan Sabri Insp. & Corr. (SEK) Member Tel No. 67489 Mr. Govinda Mishra Design Team Member Tel No. 61097 Mr. tiakat Ali Maintenance (WK) Member Tel No. 20061 Mr. Uppara Saibaba HSE Systems Member Tel No. 71837 Mr. Hamad Rejab Prod. Opns. (EK) Member Tel. No. 22528

KOC-L-015

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Transcript of KOC-L-015