当前位置:首页 >> 电力/水利 >>

DD-SPC-SP-CC-0003 Specification for 3LPE REV 1


CNOOC ENGINEERING

DD-SPC-SP-CC-0003

CONTENTS
1 2 2.1 2.2 2.3 2.4 2.5 2.6 3 3.1 3.2 3.3 3.4 3.5 4 4.1 4.2 4.3 4.4 5 5.1 5.2 5.3 6 7 7.1 SCOPE.......................

.............................................................................................. 5 REFERENCES ......................................................................................................... 6 Codes and Standards........................................................................................... 6 Contractor’s Standards......................................................................................... 6 Abbreviations........................................................................................................ 7 Definition .............................................................................................................. 7 Contractor Exceptions .......................................................................................... 8 Certifying Authority ............................................................................................... 8 GENERAL REQUIREMENTS .................................................................................. 8 Operation & Design Life ....................................................................................... 8 Materials............................................................................................................... 8 Linepipe................................................................................................................ 9 Transportation Loads ........................................................................................... 9 Certifying Authority ............................................................................................... 9 RECEIPT OF LINE PIPE.......................................................................................... 9 General................................................................................................................. 9 Serial Number and Pipe Length ........................................................................... 9 Circumference ...................................................................................................... 9 Line Pipe Inspection ............................................................................................. 9 PRELIMINARY INSPECTION................................................................................ 10 Pipe End Bevels ................................................................................................. 10 Pipe Surface....................................................................................................... 10 Stacking of Out-Of-Specification Pipes .............................................................. 10 COATING OF LINE PIPES .................................................................................... 10 COATING MATEIAL REQUIREMENTS ................................................................ 11 General Requirements ....................................................................................... 11 PAGE 2 Of 34

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

CNOOC ENGINEERING 7.2 7.3 7.4 8 9 9.1 9.2

DD-SPC-SP-CC-0003

Materials Identification........................................................................................ 11 Properties of The Applied Coating...................................................................... 12 Procedure Qualification Testing ......................................................................... 12 HANDLING AND STORAGE OF COATING MATERIALS.................................... 16 QUALITY PROCEDURES ..................................................................................... 16 Coating Procedure Specification ........................................................................ 16 Inspection and Test Plan .................................................................................... 17

10 SURFACE PREPARATION ................................................................................... 18 10.1 10.2 Surface Cleaning................................................................................................ 18 Surface Inspection Prior to Coating.................................................................... 19

11 PIPE PREHEATING............................................................................................... 20 12 COATING APPLICATION REQUIREMENTS........................................................ 20 12.1 12.2 12.3 12.4 General............................................................................................................... 20 Coating Layer Thickness .................................................................................... 22 Pipe Ends ........................................................................................................... 22 Non-Slip Surface for Concrete Weight Coating .................................................. 23

13 PROCEDURE QUALIFICATION TESTING ........................................................... 23 14 INSPECTION AND TESTING PROCEDURES ...................................................... 25 14.1 14.2 14.3 General............................................................................................................... 25 Quality Control of Pipe Coating .......................................................................... 25 Inspection and Testing Requirements ................................................................ 25

15 REPAIRS ............................................................................................................... 32 16 IDENTIFICATION AND MARKING ........................................................................ 32 17 HANDLING, STORAGE OF COATED PIPES ....................................................... 33 18 SHIPMENT OF COATED PIPES ........................................................................... 34 SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 3 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

19 DOCUMENTATION................................................................................................ 34

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 4 Of 34

CNOOC ENGINEERING 1 SCOPE

DD-SPC-SP-CC-0003

The Liwan 3-1 Gas Field is located in the South China Sea, People’s Republic of China. The development facilities consist of Liwan 3-1 subsea production facilities, two deepwater pipelines, Liwan Gas CEP, a shallow water export pipeline, and an onshore gas plant (CNOOC Deepwater Gas Plant (Gaolan)). Liwan 3-1 subsea facilities lie in water depths ranging from 1350 to 1500 meters, approximately 300 km southeast of Hong Kong. Liwan Gas CEP is situated in approximately 190 m water depth, about 79 km to the northwest of Liwan 3-1 subsea facilities. The onshore gas plant is located on Gaolan Island. Liwan Gas CEP receive and process gas from Liwan 3-1 gas field and/or the potential discoveries in the region, receive dry gas from Panyu 34-1/35-1/35-2 gas fields. The commingled gas will be compressed and transported to onshore gas plant through a subsea pipeline for further processing. In addition, Liwan Gas CEP provide chemical injection, electrical, signal and hydraulic controls to the subsea facilities at Liwan 3-1 and/or the potential discoveries in the region via subsea control umbilical and Mono-ethylene Glycol (MEG) flowline. Dry gas will be exported to Guangdong pipeline grid. The interface to the Hong Kong user is reserved. This specification covers the minimum requirements for material, application, inspection, repairs, handling and other requirements for plant application of three-layer polyethylene coating system on line pipe for offshore pipelines. All the coating systems shall provide adequate corrosion resistance to the pipeline for minimum 50 years with 50 ℃ operation temperature. All the material and application provided in this project shall be demonstrated to satisfy the requirement in below design basis. The shallow water subsea pipeline shall be coated with 3 layers PE coating system with concrete coating and 3 layers PP coating system without concrete coating as below: Pipeline description:
Pipeline Design life, years Installation time, years export pipeline 50 2

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 5 Of 34

CNOOC ENGINEERING
Contents Structure 3LPE with concrete segment Length, km (approx.) 3LPP without concrete Length,km(approx.) O.D., mm O.T.℃ Insulation thickness,mm Burial segment

DD-SPC-SP-CC-0003
Dry gas Single pipe 251

10 762 ≤ 50 0 Yes

2 2.1

REFERENCES Codes and Standards This specification has been prepared based on the appropriate section of the

following standards. Where differences exist between this specification and the references, this specification will govern.

CAN/CSA-Z245.20-06 CAN/CSA-Z245.21-06 DNV-RP-F106-2003 GS GR COR 220-2010

External Fusion Bond Epoxy Coating for Steel Pipes External Polyethylene Coating for Pipe Factory Applied External Pipeline Coatings For Corrosion Control Three layer polyethylene external coating for pipelines

NACE RP 0274-2004
SSPC-SP 1-2004 SSPC-SP 3-2004 SSPC-SP 5-2007

High voltage electrical inspection of pipeline coatings prior to installation
Solvent Cleaning Power Tool Cleaning White Blast Cleaning

2.2

Contractor’s Standards Contractor’s data sheets, application instructions and safety precautions shall be

considered part of this specification.

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 6 Of 34

CNOOC ENGINEERING 2.3 Abbreviations
CPS CWC DFT DSC EPC FBE HSS HSE ITP MDR MSDS PP PPA PQT 3LPP VDRL μm μS UV WFT Coating Procedure Specification Concrete Weight Coating Dry Film Thickness Differential Scanning Calorimeter

DD-SPC-SP-CC-0003

Engineering Procurement and Construction Fusion Bonded Epoxy Heat Shrink Sleeve Health Safety and Environmental Inspection and Test Plan Manufacturer’s Data Records Materials Safety Datasheet Polypropylene Polypropylene Adhesive Procedure Qualification Testing Three-Layer Polypropylene Vendor Data Requirements List Micrometer (micron) Micro-siemens Ultra Violet Wet Film Thickness

2.4

Definition
Nominated Third Party EPC verifying body CNOOC

Certifying Authority Company

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 7 Of 34

CNOOC ENGINEERING
Field Joint Purchaser Contractor Manufacturer

DD-SPC-SP-CC-0003

The gap between the factory applied corrosion and weight coating left following field butt welding of the pipe during the laying operation. Coating yard The party responsible for the application of coatings The party responsible for the manufacture and/or supply of raw materials and consumables used in the application of coatings

2.5

Contractor Exceptions Contractor shall be responsible for submitting, together with the Tender, a list of

deviations or exceptions to this Specification. In the absence of any exceptions, it will be construed that Contractor fully complies with this Specification. In the event of any conflict arising between this Specification and other documents listed herein, refer comments to the contractor for clarification before design or fabrication commences. The order of precedence that applies is as follows: purchase Order This Specification Project Specifications International Codes and Standards 2.6 Certifying Authority Contractor shall ensure that his ITP includes all Certifying Authority requirements for inspection, testing and certification. 3 3.1 GENERAL REQUIREMENTS Operation & Design Life Material shall be selected such that the coating system shall be suitable for the service conditions. 3.2 Materials All materials shall be as detailed in this specification. When materials are not specified Contractor may offer his standard material suitable for the offshore marine salt laden environment and operating/design conditions. SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 8 Of 34

CNOOC ENGINEERING All materials shall be new and free of defects. Contractor shall use only non-asbestos products. 3.3 Linepipe a. b.

DD-SPC-SP-CC-0003

If bevel protectors are fitted, then these shall be removed prior to coating and replaced immediately after coating to protect the bevelled pipe ends. The contractor shall provide suitable temporary caps or sealed covers to be applied to both ends in order to prevent debris, abrasives and other contaminants from entering the pipe. These end caps shall be removed on completion of coating operations, and the mill bevel protectors re-installed. Should any coating material enter the pipe it shall be completely removed without damaging the interior pipe surface.

3.4

Transportation Loads Where required Contractor shall provide transportation supports for loading and

transporting the coated linepipe by either road and/or sea. 3.5 Certifying Authority Contractor shall ensure that his ITP includes all Certifying Authority requirements for inspection, testing and certification. 4 4.1 RECEIPT OF LINE PIPE General Contractor shall assume custody and full responsibility for pipes upon receipt. For each pipe the following measurements shall be made and pipe identification recorded before coating operations commence. 4.2 Serial Number and Pipe Length The pipe serial number, heat number, OD and wall thickness, length in metres and pipe weight shall be recorded. 4.3 Circumference A measurement shall be made around the circumference of each pipe 250 mm from each end. The measurement shall be recorded against the pipe serial number and length. 4.4 Line Pipe Inspection PAGE 9 Of 34

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

CNOOC ENGINEERING DD-SPC-SP-ST-0002.

DD-SPC-SP-CC-0003

The inspection of line pipe reception shall be performed in accordance with

If the marks of the line pipe are not clear, then the line pipes are rejected. 5 PRELIMINARY INSPECTION The following visual inspection will be made out on every pipe. 5.1 Pipe End Bevels Pipe end bevels showing signs of damage (as a minimum cracks, seams, gouges, non-conforming bevel angle) shall have their condition recorded against the pipe serial number, and the damage notified to Company. 5.2 Pipe Surface Pipe surface condition shall be in accordance with the requirements of API 5L. Any indentations, or external damage which is out-of-specification, including but not limited to, corrosion damage, laminations, surface roughness and slivers shall be recorded against the pipe joint serial number and notified to Company. Such out-of-specification pipes shall be stacked as per Clause 5.3 and rejected. 5.3 Stacking of Out-Of-Specification Pipes Pipes not complying with the specification requirements following Contractor measurements and inspection shall be stacked separately. Company shall be notified and will advise on the treatment of such out-of-specification pipes. Contractor shall make an accurate tally of pipes received indicating the Purchase Order and manifest numbers. Each pipe number and length shall be individually verified against the manifest. Any discrepancies shall be stored in a separate stockpile and investigated. 6 COATING OF LINE PIPES If bevel protectors are fitted, then these shall be removed prior to coating and replaced immediately after coating to protect the bevelled pipe ends. The contractor shall provide suitable temporary caps or sealed covers to be applied to both ends in order to prevent debris, abrasives and other contaminants SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 10 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

from entering the pipe. These end caps shall be removed on completion of coating operations, and the mill bevel protectors re-installed. Should any coating material enter the pipe it shall be completely removed without damaging the interior pipe surface. 7 7.1 COATING MATEIAL REQUIREMENTS General Requirements a. b. c. d. e. f. All materials and Coating Suppliers shall be subject to Contractor and Company approval. The coating system shall be designed to provide coating properties for offshore pipeline, with a maximum design temperature of 60°C. Coating materials shall be stored, handled, and applied in accordance with Coating Suppliers recommendations. Coating yard shall carry out pre-qualification testing and production testing of coated pipe in accordance with the requirements of this specification. All coating materials shall be tested by a approved testing organization. The test certificates shall be provided by the Coating Supplier Contractor shall receive and store coating materials, review certification of analysis and testing for compliance with the applicable standards. Submit this certification to Company for review and approval prior to starting any coating work. Contractor shall submit detailed Inspection and Testing Procedures for Company approval. The coating system shall be able to comply with functional requirements during subsequent external reinforced concrete weight coating as required for submarine pipeline and during installation of pipeline both offshore and onshore.

g. h.

7.2

Materials Identification All materials shall be suitably marked with the following minimum information: Name of the manufacturer. Type of material and product designation. Batch Number. Manufacture and expiry dates Storage temperature limits and storage instructions.

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 11 Of 34

CNOOC ENGINEERING Product data sheets

DD-SPC-SP-CC-0003

Relevant manufacturing standards and specification. All materials noted to be without the foregoing identification shall be deemed suspect and shall be rejected by Contractor. Such materials shall be removed from site and replaced by Contractor at no cost to Company. 7.3 Properties of The Applied Coating The Contractor shall submit details of the FBE, polyethylene and composite coating to be applied for review and approval by Company prior to commencing the coating application. The Contractor shall give assurance that the applied coating will preserve its integrity and maintain good properties of a pipeline coating system during normal handling, installation, testing, and under the operating conditions as specified. 7.4 Procedure Qualification Testing Prior to commencement of the production coating of pipe, the Contractor shall perform a procedure qualification test on a full length of pipe coated with the specific materials to be adopted. A record of successful completion of this testing shall be submitted to Company for approval. The testing shall be in compliance with the following requirements. The coating procedure qualification tests may be witnessed by Company, or its representative. a. Coating manu shall submit the material specification, the coating process, the equipment and the procedures to be used for Company approval. These shall be qualified through a PQT. This trial shall comprise 3 joints each pipe size. Contractor shall, prior to the start of his production run, carry out the following minimum PQT requirements: Coating PQT for cathodic disbonding, impact resistance, flexibility, and peel adhesion test; Coating PQT for polyethylene tensile stress at yield, elongation at break and heat ageing test; The testing shall be conducted and executed at a recognised testing laboratory and the tests shall be witnessed by Company Representatives; SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 12 Of 34

b.

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

Test results shall be fully documented and original reports submitted to Company. 7.4.1 Fusion bonded epoxy To confirm that the powder has been manufactured, handled, shipped and stored correctly, the Contractor shall perform a gel test on each batch within one week of use. The epoxy primer shall be 100% solid powder form. The use of liquid epoxy is not allowed. The powdered epoxy primer shall have the following properties. Test
Density Gel time Cure time Moisture content

Acceptance criteria
Meets manufacturer’s within 50g/L specification

Test method
CAN/CSA-Z245.20-06

Within 20 % manufacturer’s specified CAN/CSA-Z245.20-06 nominal Meets manufacturer’s specification 0.5%(Max) (Titration) CAN/CSA-Z245.20-06 CAN/CSA-Z245.20-06

Particle size

3.0 % maximum powder retained on 150?m mesh and 0.2 % maximum CAN/CSA-Z245.20-06 powder retained on 250?m mesh

Glass transition no less than 100°C for fully cured Differential Scanning temperature material Calorimeter (DSC) Bend test No holiday CAN/CSA Z245-20, Clause 12.11 2.5° at minimum temperature

ASTM 570 on a free film Water absorption Less than 10% of weight uptake after 28 of 500microns +/- 50 (demineralised days at 80°C thickness water) DSC, on a sample of fully “wet” Glass “wet” Tg shall be at least 10°C higher water saturated free film transition than max operating temperature of of FBE. 1st run, fully temperature pipeline sealed pan.

7.4.2

Polymeric Adhesive Contractor shall provide details of type and properties of the adhesive layer for

the Company’s approval. SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 13 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

The adhesive shall conform to the following properties. Test
Flow - rate Density

Unit
g/10 min g/cm3

Acceptance criteria

Test method

D1238 Within 20% of manufacture’s ASTM specified nominal 190℃ /2.16kg Within 1% of manufacture’s ASTM D792 or specified nominal ASTM D1505 At least 90℃ ≤-50 (for F20) > 120 > 500 ASTM D1525 ASTM D746 ISO 11357-1 and -3 ISO 527

Vicat Softening point (9.8 ℃ N) Brittleness temperature Melting point Elongation at break ℃ ℃ %

7.4.3

Polyethylene (High Density) The polyethylene shall be suitable for the design temperature of the pipelines

and suitable for a 3-layer coating system. The plastic coating materials shall conform to the following properties. Test Unit
g/cm3 g/10min MPa % ℃ ℃ % ℃

Acceptance criteria
> 0.940 0.15-0.80 ≥18.5 ≥600 ≥110(raw) > 120 > 2.0 ≤-70( F20)

Test method

Density Flow rate Tensile stress at yield Elongation at break Vicat softening point Melting point Carbon black content Brittleness temperature

ASTMD792 or D1505 ASTM D1238 (190℃/2.16kg) ASTM D638 Type IV sample Crosshead speed 50 mm/min ASTM D638 Type IV sample Crosshead speed 50 mm/min ASTM D1525 ISO 11357-1 and -3 ISO 6964 ASTM D746

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 14 Of 34

CNOOC ENGINEERING Test Unit Acceptance criteria
F20>1000 hrs
>50

DD-SPC-SP-CC-0003 Test method

Environmental stress crack resistance h condition
Hardness Shore D

ASTM D 1693, Cond B (10% Igepal)
ASTM D2240 NF A 49-710

Thermal resistance UV ageing

degradation

day
-

≥100 days Result<0.35

ASTM D 1693, Cond B (10% Igepal)

7.4.4

Coating Requirement After application, the finished coating shall have the following properties. Test Unit
MPa
Shore D

Acceptance criteria
≥17
>50

Test method
ASTM D638
ASTM D2240

Tensile strength
Hardness

< 5(28 days at 23 +/- 2°C) Cathodic disbondment mm < 3(48hr at 65 °C+/- 2°C) ≥7.0 10 kV/mm (25 kV max) > 200 CAN/CSA-Z245.21-06

Impact resistance (23± J/mm 2°C) Holiday Detection Resistance to peeling At least 80% of peeled surface to be cohesive kV N

DIN30670 NACE RP 0274 at 23 +/- 2°C CAN/CSA-Z245.21-06

Elongation at break at23°C +/- 2°C for PE % topcoat Indentation Vicat softening point Brittleness temperature mm

>500 <0.10 at 20°C

ISO 527-1 and -2

NF A 49-710 <0.30 at 80°C >110 <-70 ASTM D1525 ASTM D746

℃ ℃

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 15 Of 34

CNOOC ENGINEERING Test
Environmental stress crack resistance h condition Flexibility Curing of epoxy °C J

DD-SPC-SP-CC-0003 Unit Acceptance criteria
F20>1000 hrs No cracking of polyethylene ΔTg lower than 3°C No residual enthalpy

Test method
ASTM D 1693, Cond B (10% Igepal) CAN/CSA-Z245.20-06 DSC

8

HANDLING AND STORAGE OF COATING MATERIALS Materials shall be handled and stored in accordance with applicable safety

regulations and the material manufacturer’s recommendations, and shall be used according to the manufacturer’s batch sequence. Contractor shall submit details of material control recording procedure to Company for review prior to commencement of coating. Contractor shall submit details of his traceability procedure for Company’s review and approval. In order to ensure coating application traceability, Contractor shall record the batches of material used to coat each individual pipe length, the time and date of coating. The information shall be included in the MDR, which shall be presented to Company on completion of the contract. The containers or packages of materials shall be properly handled in order to avoid damage. Coating materials shall be segregated by the type and batch, during storage and handling. Storage temperatures for coating materials shall be as specified by the manufacturer. 9 QUALITY PROCEDURES Contractor shall submit for Company approval, a Quality Plan detailing all coating process activities. The Quality Plan shall, as a minimum, include a Coating Procedure Specification (CPS) and an Inspection and Test Plan (ITP). 9.1 Coating Procedure Specification Prior to the commencement of coating, Contractor shall submit a pipe Coating SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 16 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

Procedure Specification (CPS) giving full details of all the characteristics of the proposed coating process. The project specific CPS shall be formulated by Contractor and submitted for Company’s approval in the form of a bound manual. No element of pipe coating shall proceed without Company’s written approval of the CPS. The CPS shall include, but not be limited to, the following information: Contractor’s personnel and their roles and responsibilities. Pipe receival and initial inspection. Quarantining of defective pipe. Steel surface preparation, including preheating, steel defect removal, phosphoric acid treatment, cleanliness, profile, methods of measurement and consumables. Pipe heating, temperatures and control. Complete details of raw materials together with quality control and manufacturer’s data. Application of materials, including characteristics, application temperature, etc. Pipe coating quenching and cooling, including time and temperature. Complete details and inventory of laboratory and equipment. Detailed method of repair of coating defects duly classified based upon the nature and magnitude of defects and repairs thereof. Spark testing and repairs. Cutback procedure. Pipe handling, stockpiling, load out and transportation procedures. Sample of recording and reporting formats, including laboratory reports, certificates, etc. Complete details of test certificates for raw materials, including test methods and standards. Environmental provisions for raw materials storage. Procedure for transferring of pipe identification numbers, paper barcode labels, and applying pipe identification marking. 9.2 Inspection and Test Plan Quality assurance system, Inspection and Testing Plan (ITP) and reporting formats, documentary proof of current 3rd party calibration of all test and SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 17 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

measurement equipment, equipment types, makes and uses, etc. The ITP shall encompass all required testing and test frequencies, including but not limited to: Proposed substrate chloride contamination test method. Proposed substrate cleanliness test method. Proposed coating adhesion test. Proposed hot water immersion resistance test. Proposed cathodic disbondment resistance test methods. Proposed holiday testing method. 10 SURFACE PREPARATION 10.1 Surface Cleaning The pipes will be supplied without a mill coating. Immediately prior to blast cleaning, the pipes shall be inspected for surface contamination. All grease, oil or other surface contaminants shall be removed by a suitable solvent according to SSPC SP1. Pipes which have been subject to salt spray shall be washed prior to blast-cleaning with fresh water ensuring that the contamination is not spread over the surface. Test for the presence of salt shall be performed on the pipe surface from 1 pipe per 100 pipe joints and shall be lower than 20mg/m2. If chemical cleaner is used, subsequent washing with fresh water will be necessary. During blast cleaning, the pipe surface shall be at least 3°C above the dew point temperature and the ambient relative humidity should not exceed 85%. Pre-heating of pipes is required if humidity is higher. The grade of finished surface after blast-cleaning shall be in accordance with the requirements of SSPC-SP 5. Sand blasting is not permitted, grit blasting only. The surface profile after blast cleaning shall have a peak-to-trough height between 50μm and 100μm and shall be measured by a method agreed with Company. Manufacturer shall inspect every pipe under ample lighting conditions. The grit shall be selected so that the average roughness Ry5 (as per ISO 4287) SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 18 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

obtained ranges from 50 to 100 microns (as per ISO 8503-4). The use of replica tape to assess the roughness is not allowed except get approval by company. At start of production, cleanliness and salt contamination of abrasives shall be checked as per ASTM D 4940: Conductivity shall be lower than 1000 micro Siemens/cm and no oil shall be visible after 30 minutes. No silica grit is allowed. The profile of the blasted steel surface can be measured on the first pipe of every shift and 1 pipe in 20 thereafter using a Testex Press-O-Film replication tape together with a calibrated micrometer or equivalent method when get approved by Company. Directly before coating, any dust, grit of other contaminants shall be removed from the pipe surface by a method to be advised by the Contractor and approved by Company. Where rust blooming or further contamination has occurred, the pipe surface shall be (blast) cleaned again. Coating shall take place before any further contamination or rust blooming appears. Blast-cleaning shall be suspended when the pipe surface temperature falls to within 3℃ of the dew point or the relative humidity is more than 85%. At regular intervals, the blasted surface shall be checked for chloride contamination. The Contractor needs to provide details of such testing method. If Chlorides are detected, then the entire cleaning procedure shall be re-investigated and the source of contamination shall be eliminated to the satisfaction of the Company. Oxidation or flash rust shall not be permitted prior to coating. Typically, all pipes shall be coated within 4 hours after blast cleaning, depending on relative humidity. Immediately following the surface preparation, the pipe shall be inspected by the Contractor or Company to determine whether or not the surface is free of dust and other residues encountered during the cleaning operation. If, in the judgment of the Contractor's inspector, any surface is not adequately cleaned, the pipe shall be rejected and re-cleaned. 10.2 Surface Inspection Prior to Coating SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 19 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

The pipe surface shall be inspected immediately after blast-cleaning by the Contractor under adequate lighting, and slivers, scabs, gouges, etc., made visible shall be removed by grinding using a method approved by Company. 11 PIPE PREHEATING a. The pipe shall be uniformly heated prior to coating application. The pipe temperature shall not, under any circumstances, exceed 270°C at any time during the process. The preheating shall not cause contamination due to combustion or surface oxidation. The pipe temperatures at the entrance of the coating station shall comply with the specification supplied by the Coating Supplier. The pipe temperature shall be continually checked by use of graduated "Tempil Stik" heat indicating crayons. Contact with the pipe shall be kept to a minimum. Calibrated optical pyrometers may be used for continuous temperature monitoring. The calibration of the optical pyrometer shall be checked at least twice daily. Pipe heated to temperatures causing blue oxide shall be reprocessed.

b. c. d.

e.

12 COATING APPLICATION REQUIREMENTS 12.1 General The coating application process shall follow the Coating Supplier’s

recommendation and comply with the following requirements of this specification: a. FBE Application

The pipes shall be heated by induction. The temperature of the pipe and the intercoat time (between primer and adhesive) shall be set according to the gel time of the epoxy primer and following the epoxy Coating Supplier’s recommendation, in order to obtain, as a minimum, adhesion values required. The powder epoxy primer is sprayed using electrostatic pray guns. The thickness of the coat shall be as per section 9. b. Adhesive Application

The adhesive shall be applied in a time frame (after epoxy application) compatible with the gel time of the epoxy primer. Extrusion parameters shall be set SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 20 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

following adhesive Coating Supplier recommendation, in order to obtain, as a minimum, adhesion values required in. The adhesive thickness shall be as per section 12. c. Polyethylene Application

The polyethylene top coat shall be applied by extrusion exclusively. No air entrapment, micro voids and/or micro bubbles are allowed within the layer thickness of the polyethylene. The pipe will be coated only after the pipe surface has achieved by the requirements of section 12. The Contractor shall coat the pipe in accordance with the following requirements. The heating equipment shall be suitably controlled to maintain uniform temperatures and to achieve the required uniform temperature along the total length of the pipe joint. Prior to coating, the pipe temperature shall be checked with approved and calibrated instruments to ensure that the temperature complies with the established coating procedure. During coating, the beveled ends of the pipes shall be protected against mechanical damage and against contamination with coating material. d. Surface preparation for concrete coating

The polyethylene surface shall be processed to improve the friction coefficient between the concrete and the polyethylene surface. Granules or powder of polyethylene shall be sprayed on the hot extruded polyethylene surface (before quenching). The granules being no totally melted, they will provide a rough surface. The coating shall comply with the requirements of concrete weight coating. e. Cooling

When coating is completed, the tube shall be sprayed with water in order obtain a pipe temperature of +60°C maximum. Temperature shall be such that handling of the coated pipe leaves no marking or degradation on the coating.

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 21 Of 34

CNOOC ENGINEERING 12.2 Coating Layer Thickness

DD-SPC-SP-CC-0003

The application of the coating shall be in accordance with the material manufacturer’s recommendations and Company-approved procedures. The finished coating shall be textured to provide a mechanical key with the CWC. During coating application no container/hopper shall contain material from more than one batch. Each pipe end shall be left uncoated so that a minimum 25mm FBE toe protrudes on the steel beyond the cutback polyethylene coating layer. Total System Coating Thickness (μm)
FBE(Min.) 400 Adhesive(Min.) 150 PE(Min.) 2650 Total(Min.) (Excluding sinter powder roughening) 3200

The minimum total thickness may be reduced to Min. 2.9mm on the weld seam of SAW pipes for above total system coating thickness. The thickness of the 3LPE parent coating which EXCLUDES the sinter powder roughening. 12.3 Pipe Ends The pipe surface shall be free of all coating 135~145 mm length measured from the end of the pipe. The coating shall be cut just after cooling and removed manually or mechanically with power brushes. The stripped steel ends shall be brushed clean. Epoxy primer shall be visible for a few millimeters at cut back to avoid any disbonding during storage. The ends of the polyethylene coating shall be bevelled in order to ensure a satisfactory bonding of field joint material on site. The bevel angle shall be approximately 15-30°. The cut backs shall be protected by peeling varnish in order to avoid rusting of the bare metal during storage/transportation. SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 22 Of 34

CNOOC ENGINEERING 12.4 Non-Slip Surface for Concrete Weight Coating

DD-SPC-SP-CC-0003

At a PE layer temperature to be determined by Contractor, PE powder shall be applied to and embedded in the surface of the PE layer to provide a non-slip surface for anchoring CWC. The rate of application shall be such as to create a rough finish. Contractor shall ensure that the PE powder embeds in the PE layer providing a rough textured finish. The shear strength between anti-corrosion coating and concrete coating shall be equal or greater than 0.15 MPa. In order to provide the adequate shear strength capacity, anti corrosion coating shall have a rough surface finish by means of synthered powder application (partially melt). The roughness shall be greater than 0.5mm or recommended by coating yard. 13 PROCEDURE QUALIFICATION TESTING Qualification of the proposed application plant, personnel, coating method and products shall be carried out in due time through a Procedure Qualification Testing (PQT). Qualification shall be organised jointly by the CONTRACTOR and witnessed by a COMPANY representative. Qualification testing shall be organised at least 8 weeks before the works start in order to ensure that a suitable solution can be implemented in case of test results fail to meet the requirements of this specification. Qualification shall consist of the following step: Raw materials (epoxy, adhesive, PE): Conformity certificates and tests results for materials requirements shall be submitted to COMPANY for approval prior to the start of qualification process of the coating. - Certificate of analysis for each batch of product used for qualification process shall be submitted to COMPANY. - For PE only: Tests results (from an independent laboratory) for ESCR resistance as per ASTM D1693, Cond B shall be submitted to COMPANY for approval. Test result shall not be older than three years. Note: It is requested that contractor provide the data listed in below to SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 23 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

COMPANY or its representative on site during either qualification or start up. Qualification or production : Project reference Date Applicator/Location Pipe characteristics (diameter, WT, seamless or not etc…) Speed of coating line Adhesive and PE extrusion output Type of coating and thickness (provide data sheet, certificate of analysis and conformity for each product) Steel roughness (Ry5) Salt contamination Peeling strength at RT and 80°C Shore D CD test : 28 days at 23°C, 48hrs at 65°C Coating process: Witnessed by COMPANY representative and Coating process parameters shall be fully recorded during PQT. Same parameters shall be used for production, with a maximum discrepancy of 5% for each parameter. Of special interest here is line speed, which shall be strictly monitored to be equal during PQT and production (within a 5% margin). Coating properties : Witnessed by COMPANY representative, A summary of Qualification tests as well as acceptance criteria and frequency is given in this specification. The CONTRACTOR and APPLICATOR shall submit a complete joint report of the Qualification test results to the COMPANY for approval. Once approved, the system (considered as the three components as a whole) will be considered as qualified on the corresponding coating line. Any change in the components of the system or the application of a qualified system on a new coating line shall lead to a new qualification process. At start of production a Pre-Production testing (PPT) shall be carried out, consisting mainly of reinforced test frequency over the first pipes of the first shift of production (typically five pipes, but can be more, subject to COMPANY decision).

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 24 Of 34

CNOOC ENGINEERING 14 INSPECTION AND TESTING PROCEDURES 14.1 General

DD-SPC-SP-CC-0003

Company and/or their representative shall have unrestricted access to all departments of the coating yard when coating of the pipe or testing of the materials is executed. In the event that problems are detected or repairs are needed, the Contractor shall take immediate steps to correct the situation to the satisfaction of Company. 14.2 Quality Control of Pipe Coating All requirements for quality control shall be met, as laid down in this specification. The Contractor quality control department shall be responsible for timely warning and the Contractor’s production department for timely correction of problems and repairs to avoid any serious delays in the production. They shall communicate with Company and arrange for the checks as described under section 7 hereinafter at Company option. Records shall be kept of pipe coated by the Contractor as follows and copies shall be made available as requested by Company’s representative. a. b. c. d. Pipe mill serial number, for each pipe Number of pipes rejected per shift and cause of rejection. Date on which a new batch of FBE and Polyethylene (PE) is fed into the coating application plant. Max. temperature to which pipe joint has been subjected e.g. by strip chart records of with tempilsticks for every joint.

The pipe mill data sheets supplied with the pipe delivery shall be attached to the above data indicated on these copies by the Contractor’s. 14.3 Inspection and Testing Requirements Inspection shall include, but not be limited to, monitoring of the surface cleanliness, measuring of the surface profile and coating thickness, holiday detection, adhesion testing and visual inspection. The frequency of testing, where not specifically indicated, shall be agreed SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 25 Of 34

CNOOC ENGINEERING between the Contractor and Company.

DD-SPC-SP-CC-0003

The tests described herewith shall be witnessed by Company’s representative. 14.3.1 Surface Profile The surface profile shall be measured in accordance with a procedure agreed with Company. The meter shall be calibrated daily. The frequency of testing shall be on an hourly basis. 14.3.2 Coating Visual Appearance The coating shall be free from blisters, pinholes, scratches or any other irregularities and shall have a uniform color and gloss. Any line pipe showing blisters or any indication of disbonding will be rejected. 14.3.3 Coating Thickness The method for measurement of the coating thickness shall be approved by Company. The measurement equipment shall be calibrated at least once per shift. The measurements may be carried out by electronic thickness gauge, magnetic thickness gauge and/or diameter tape. A minimum of twelve thickness checks shall be made at three equidistant locations spread over the total length of the selected pipe joint at the 3, 6, 9 and 12 o’clock pipe. (First 5 pipes of each ordered) Thereafter all pipes shall be checked for thickness at four equidistant locations along the pipe. The frequency may subsequently be varied, based on the quality history and agreement of Company. Coating thickness (nominal and minimum values of individual layers, maximum value) shall be defined in purchase document and provided in section 11. Any line pipe exhibiting a single thickness measurement less than specified minimum thickness provided in section 11 an additional 4 readings shall be taken around this area. The average of the additional 4 readings and the initial reading shall be higher than the minimum thickness.. 14.3.4 Holiday Detection Every pipe shall be inspected for holidays over 100% of its coated surface with a SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 26 Of 34

CNOOC ENGINEERING holiday detector approved by Company.

DD-SPC-SP-CC-0003

The coating shall be checked with the holiday detector with voltage of 25kV. The Contractor shall demonstrate to Company’s representative that the setting of the detector is satisfactory for detecting pinholes. This setting shall be checked once every four hours with a voltmeter. Every coated pipe with more than two holidays shall be rejected and subsequently stripped and recoated unless otherwise mutually agreed between the Contractor and Company being due to poor steel surface quality. Coated pipes with not more than two holidays shall be repaired in accordance with section15. 14.3.5 Peel Test The adhesion of the coating in the transverse direction at ambient temperature shall be checked in accordance with an agreed modified procedure on one pipe per shift selected at random. In addition, the Contractor shall check the adhesive strength at 50℃ by performing one test on a first-day-production pipe. An adhesion test at ambient temperature shall also be carried out in the longitudinal direction in accordance with an agreed modified procedure. The results shall be recorded and reported. These tests shall be carried out on a minimum of one pipe per shift of production on pipe’s end. If any line pipe fails the adhesion test, the following action shall be taken in consultancy with the Company. The previous line pipe length to be coated shall be tested, together with one extra line pipe length at random, from the previous shifts production. If either length fails the test, then the entire shift production will be rejected. Additionally, the next coated line pipe after the first test failure, shall also be tested. Testing should then be continued on at least every tenth line pipe until the problem is solved. All line pipe lengths will be rejected up to the time where two consecutive test passes occur. 14.3.6 Cathodic Disbondment Test SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 27 Of 34

CNOOC ENGINEERING test sample as per section 7.4.4 herein. 14.3.7 Impact Strength Test

DD-SPC-SP-CC-0003

A cathodic disbondment test shall be carried out on the procedure qualification

Impact resistance test shall be carried out on the procedure qualification test sample as per section 7.4.4 herein. 14.3.8 CWC Shear Test, Full System Contractor shall perform shear tests to demonstrate that the shear strength between the PE surface and the CWC is a minimum of 0.15MPA. submit a shear test procedure for Company approval. shear tested. 14.3.9 Adhesion Test of Epoxy Layer This test shall be performed on a coated pipe representative of the coating process (at PQT). The objective of the test is to assess long term adhesion of FBE to the steel after ageing in hot water. During coating process, adhesive layer shall be stopped in order to apply on the pipe only FBE layer and PE top coat. (This test can also be used for testing of curing of FBE). Three samples of pipe with only FBE layer shall be cut, dimension being identical to CD test samples. These samples shall be immersed in hot deionized water with unprotected edges for duration of 28 days and a temperature of 80°C. At end of test, sample shall be removed and dried with a clean tissue, and left to cool down at ambient temperature (max two hours). Once the samples at ambient temperature, a cross cut shall be made with a cutting tool down to the steel. Inscribe a V-cut with two 20 mm lines intersecting approximately 5 mm from their ends at 30° to 45°. Insert blade of the knife at the point of the V-cut to the surface. Then with an upward flicking action attempt to dislodge the coating within the V . If little or no coating is removed, repeat this action within the V SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE PAGE 28 Of 34 Contractor shall Five test pieces shall be

CNOOC ENGINEERING at least 4 times to confirm the integrity of the coating.

DD-SPC-SP-CC-0003

Examine the appearance of the disbanded surface and compare with the following descriptive rating below: Rating 1: No coating removed Rating 2: Coating removed in small chips with difficulties Rating 3: Coating removed in chips, slightly larger in area to the knife – point inserted under the coating. Some of the coating remains adherent to the surface of the steel within the V-cut There shall be No coating removed (rating 1) of FBE layer from the steel. For this project, Rating 2 can not be accepted except get an approval by company. 14.3.10 UV Ageing Test Test samples: Polyethylene samples taken from coated pipes Test conditions: Artificial weathering (Table 1-Method A of ISO 4892-2) Black panel temperature BST : 65 +/-3°C Relative humidity : 65 +/-5% Cycle : 18 +/-0.5min humid; 102 +/-0.5 min dry Total radiant energy : 5 JG/m2 Continuous exposure Procedure: On sample taken from coated pipe, first measure the initial MFI according to ISO 1133 (2,16kg, 190°C): MFI (0). Expose the sample to the test conditions described above. After total radiant energy is reached, stop the test and measure the MFI according to ISO 1133 (2,16kg, 190°C): MFI (5GJ/m2). Results are expressed as variation of MFI with time: Result = I (MFI (5GJ/m2)-MFI (0)) I/MFI (0)

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 29 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

Each MFI shall be the average value of three measures. Certificate no older than three years 14.3.11 Inspection and Testing Frequency The minimum frequency of testing/inspection shall be as follows:
No. 1 2
2.1

Item
Preheating 40 to 70°C

Parameter

PQT
10 pipes All

PPT

Fabrication
All by camera monitoring IR

Surface preparation
Abrasive cleanliness Conductivity lower than 1000 microSiemens No oil after 30 minutes in water SSPC SP5 No contaminations After abrasive mg/m2 oil, grease At start At start At start

2.2

Degree cleanliness Salt contamination Dust level

of

10 pipes

All

All Once per shift (at start) 4 per shift Every pipes, ends 4 per shift 20 both

2.3 2.4

cleanliness

10

5 pipes 10 pipes 10 pipes (both ends) 1 pipe

2 pipes 5 pipes 5 pipes (both ends) 1 pipe

Equal or less than 2

2.5

Roughness

50 ≤ Ry5 ≤ 100 μm

2.6

Steel temperature

+ 3°C above dew point

3
3.1

Coating application
Pipe temperature after induction heating Intercoat time Extrusion temperature Cooling Section 8 All 5 pipes All

3.2 3.3

Section12 Section 12 θ ≤ 60 no marking of

All 5 pipes

5 pipes 5 pipes

Twice per shift Once per shift

3.4

the coating

All

5 pipes

All

4.
4.1

Raw materials
Conformity certificate Tests results Section 7 Each raw material Each raw material Each raw material Each raw material N/A

4.2

Epoxy primer Adhesive

Section 7

N/A

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 30 Of 34

CNOOC ENGINEERING
Polyethylene

DD-SPC-SP-CC-0003

4.3 4.4

UV and resistance Stress resistance Certificate analysis

thermal cracking

Section 7 ASTM D1693, Cond Igepal) F20>1000 Section 7 B (10%

For PE only For PE only

N/A N/A Every batch

N/A N/A

4.5

of

Every batch

Every batch

5.
5.1 5.2 5.3

Coating
Visual aspect Thickness Epoxy thickness Homogeneous colour Section 12 400um(Min.) All All 2 pipes 5 pipes 5 pipes 2 pipes All Every 5 pipes One at start of each shift 1 at start of each shift N/A 1 at start of each shift All All One at start of each shift One at start of each shift Both ends at start of shift and then every 4 hour As peel test One per shift One per shift N/A N/A

5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 5.13

Curing of epoxy Epoxy adhesion Adhesive thickness Holiday detection Cut-back Impact resistance Shore D hardness Peeling force Homogeneity of the coating Indentation

Delta Tg < 3°C Rating 1 (No disbanding) 150 um(min.) 10 kV/mm (25 kV max) 135~145mm No less than 7J/mm - Holiday detection : 10 kV/mm(25 kV max) No less than 50 > 200N at 23°C ± 2°C Visual inspection. No micro voids or micro bubbles. <0.10 at 20°C <0.30 at 80°C

1 pipe 1 pipe 2 pipes All All 2 pipes 2 pipes 3 pipes(both ends and middle) as peel test 2 pipe 2 pipe 1 pipe 1 pipe at qualification ) 1 pipe(manda tory at qualification ) 1 pipe All at both ends

1 pipe N/A 1 pipes 5 pipes 5 pipes 1 pipe 2 pipes 3 pipes (both ends) As test peel

2 pipes 2 pipes N/A N/A

5.14 5.15 Flexibility

No defect Test at 28 days at 23°C ± 2°C Less than 5 mm

5.16

Cathodic disbonding

Test at 28 days at 80°C ± 2°C Less than 10 mm Test at 65°C ± 2°C during 48h less than3 mm

N/A

N/A 1 pipe every two weeks All at both ends

1 pipe All both ends

5.17

Residual intensity

magnetic

< 3 milliTesla (30 gauss)

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 31 Of 34

CNOOC ENGINEERING
6 Concrete weight coating Shear Test

DD-SPC-SP-CC-0003

>150kPa

One per thickness of concrete coating

2 pipe

One per shift

Testing frequency can be adjusted when get an approval by company.

15 REPAIRS The Contractor shall perform all repairs to the coated pipe at no expense to Company. Scars, dents, damaged areas and holidays shall be cleaned by removing all rust, scale, dirt or other foreign matter or loose coating using a small file. Pinhole type holidays shall be repaired using the patch stick method. The use of patching sticks shall be justified by a procedure test. The use of shrinkable tape for repair of holidays up to 250 mm2 is acceptable. All repairs shall be inspected with the holiday detector as specified in section 11.3.4 and must be recorded. 16 IDENTIFICATION AND MARKING Contractor shall maintain pipe identification throughout the coating process. If pipe identification is removed during coating, it shall be replaced in a Company approved manner, to ensure no pipe loses its unique number or heat number. Any pipe that cannot be positively identified to Company satisfaction shall be rejected and replaced. Identification shall be applied 100 mm from coating ends, inside the pipe at each end. Letters and numerals shall be of adequate size. All markings shall be spray applied using paint compatible with the coating material, and of a contrasting colour. The marking shall indicate, but not be limited to, the following information: The pipe manufacturer’s unique identification number and job number. Heat number. Diameter, wall thickness, weight and length, specification and class.

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 32 Of 34

CNOOC ENGINEERING Method of manufacture. Coated pipe number. Coating type. Coating Date. Colour band. Purchaser.

DD-SPC-SP-CC-0003

Any other information considered relevant by Company. Contractor shall obtain prior approval from Company for the marking procedure. 17 HANDLING, STORAGE OF COATED PIPES The coating Contractor shall furnish all equipment, plant space, stockpile areas, labor, supervision and materials to perform the following activities: The application, testing and inspection for the pipe external coating. The repair of coating of all tested pipes which are repairs of sample pipe which are deliberately damaged during testing (e.g. peel test) at the coating Contractor’s expense. The rejected pipe may require removal of all coating and then recoating if, in the opinion of Company’s representative, this is the only way in which the coating can meet the specification. The repair of all damaged coated pipe prior to shipment from the coating Contractor’s storage areas. The stockpiling of coated pipe in the coating Contractor’s storage areas. The preparation of the coated pipe for the transport and transfer to transport facilities for shipment. The Manufacturer taking delivery of the bare pipes shall unload them using slings, spreader bars, etc., approved by Company, so as to prevent the pipes from being damaged, ensure pipe bevels are not damaged. The bottom layer of pipe shall rest on soft-padded wooden bolsters or in a manner approved by Company. Care shall be taken to prevent damage to the coated pipe. It shall be handled using spreader bars and slings etc. Direct metal to coated pipe contact shall be avoided during lifting, storage and transport.

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 33 Of 34

CNOOC ENGINEERING

DD-SPC-SP-CC-0003

The coated pipe shall be stored completely clear of the ground at all times. For storage purposes the coated pipe may be laid on wooden bolsters with a suitable covering (rubber) or on piles of stone-free sand. The pipes may be stacked only to such a height as to ensure that no flattening or damage to the coating or pipe can occur through the weight of the pipes or too widely spaced supports. Throughout the storage period the Contractor shall bear full responsibility for the coating. Damage or flattening of the coating shall be corrected by the Contractor at his own expenses and to the satisfaction of Company. 18 SHIPMENT OF COATED PIPES Contractor shall be responsible for preparation for shipment including: packing, protection, preservation, labelling and marking of all items. Load test certificates shall be shipped with all lifting equipment, spreader bars, slings and shackles. All harmful substances, dirt, steel shot and other debris shall be removed from inside pipes before shipping. All excess coating found inside and on the cutback and bevel end of pipe shall be completely removed. Each pipe shall be supported on contoured and padded bolsters to limit bearing pressure and avoid coating deformation and damage while pipes are in transit. There shall be no contact between adjacent coated pipes. 19 DOCUMENTATION The Contractor shall furnish the following final documentation: Material specifications and certificates Tally record of pipe received, pipe coated, repaired or rejected and loads out. QC records on blasting, joint inspection, tests, repairs etc. Calibration records

SPECIFICATION FOR 3LPE COATING OF SUBSEA PIPELINE

PAGE 34 Of 34


相关文章:
BH105油管线平管对接
(mm) 11.1 3LPE 密度 (Kg/m3) 940 3LPE 厚度 (mm) 3.1 水泥配重 厚度(...-SP-0009 3 3.1 参考文件详细设计 DD-SPC-SPG-SP-0001 SPECIFICATION FOR ...
施组范本
SPECIFICATION FOR OFFSHORE PIPELINE INSTALLATION DD-SPC-SP-SP-0018 SPECIFICATION FOR Shore Approach Construction DD-TN-SP-SP-0003 DD-TN-SP-SP-0004 DOC-...
更多相关标签:
3lpe防腐 | 3lpe防腐层 | specification | specification jpa | specification sheet | java specification | job specification | pcie specification |