FACTORY APPLIED EXTERNAL PIPELINE COATINGS FOR CORROSION CONTROL

Transcription

1 RECOMMENDED PRACTICE No. RP-F106 FACTORY APPLIED EXTERNAL PIPELINE COATINGS FOR CORROSION CONTROL MARCH 2000 Veritasveien 1, N-1322 Høvik, Norway Tel.: Fax:

2 FOREWORD (DNV) is an autonomous and independent Foundation with the objectives of safeguarding life, property and the environment, at sea and onshore. DNV undertakes classification, certification, and other verification and consultancy services relating to quality of ships, offshore units and installations, and onshore industries world-wide, and carries out research in relation to these functions. DNV publishes various documents related to the offshore industry, aimed at promoting quality and safety on offshore units and installations. These documents are published within a frame consisting of Service Specifications, Standards and Recommended Practices, see figure below. TECHNICAL PART PROCEDURAL PART DNV OFFSHORE SERVICE SPECIFICATIONS. DNV OFFSHORE STANDARDS OTHER DNV STANDARDS INTERNATIONAL CODES/STANDARDS The technical requirements forming the basis for the verification services are given in DNV Offshore Standards (OS-series) as well as other codes and standards cited by DNV. The DNV OS-series is divided into 6 parts: A. Quality and Safety Methodology B. Materials Technology C. Structures D. Systems E. Special Facilities F. Pipelines & Risers The Recommended Practice publications (RP-series) cover proven technology and solutions which have been found by DNV to represent good practice, and which represent one alternative for satisfying the requirements stipulated in the DNV Offshore Standards or other codes and standards cited by DNV. The DNV RP-series is divided into 6 parts, identical to OS. As well as forming the technical basis for DNV verification services, the Offshore Standards and Recommended Practices are offered as DNV s interpretation of safe engineering practice for general use by the offshore industry. DNV RECOMMENDED PRACTICES DNV GUIDELINES & NOTES INTERNAT. RPs ETC. The procedural basis for offshore verification services are provided in DNV Offshore Service Specifications (OSSseries). The OSS-series of documents are divided into 3 parts: Classification Shelf Legislation Compliance Services Certification and other Services Comments may be sent by to dtp203@dnv.com. For subscription orders or information about subscription terms, please use distribution@dnv.com. Comprehensive information regarding DNV services, research and publications can be found at or can be obtained from DNV, Veritasveien 1, N-1322 Høvik, Norway; Tel , Fax All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, including photocopying and recording, without the prior written consent of. Printed in Norway by Det Norske Veritas AS Det Norske Veritas AS 2000 Data processed and typeset by Division Technology and Products, Det Norske Veritas AS Printed in Norway by Det Norske Veritas AS

3 CONTENTS 1. General Introduction Scope Application Structure of Document Relation to DNV OSF Normative References ASTM (American Society for Testing and Materials) AWWA (American Water Works Association) BS (British Standards) CSA (Canadian Standards Association) DIN (Deutsche Industrie Normen) DNV (Det Norske Veritas) EN (European Standards) GBE (Gas Business Engineering/British Gas) ISO (International Organization for Standardization) NACE (National Association of Corrosion Engineers) NF (Normes Francaise) Definitions and Verbal Forms Abbrevations General Requrements Coating Manufacturing Procedure Pre-Production Qualification Testing () Quality Control Coating Materials Initial (Receipt) Inspection of Pipes and Surface Preparation Coating Application Inspection and Testing of Coated Pipes Repairs Documentation and Marking Handling and Storage of Pipes...11 ANNEX Coating Data Sheet No.1: 3-Layer Polyethylene or Polypropylene Coating...13 Coating Data Sheet No.2: Multi-Layer Polyethylene or Polypropylene Coating Coating Data Sheet No.3: Single or Dual Layer Fusion Bonded Epoxy Coating...18 Coating Data Sheet No.4: Asphalt Enamel (or Bitumen ) Coating...20 Coating Data Sheet No.5: Coal Tar Enamel Coating...22 Coating Data Sheet No.6: Polychloroprene (or Vulcanised Rubber ) Coating...24

4 4 Recommended Practice No. RP-F General 1.1 Introduction Submarine pipelines require external coatings with the primary objective of corrosion protection. Certain coating systems are additionally designed to provide mechanical protection during installation and operation, or thermal insulation. A corrosion protective coating is sometimes combined with a concrete coating for anti-buoyancy and/or mechanical protection during operation Pipeline coatings for external corrosion control are applied to individual pipe lengths (typically about 12 meters) in a factory. The areas of the pipeline left uncoated to facilitate girth welding are normally coated after welding with a so-called field joint coating system. 1.2 Scope This Recommended Practice includes the following external coating systems for corrosion control of marine pipelines (including associated risers): 1) Glass fibre reinforced asphalt enamel coating 2) Glass fibre reinforced coal tar enamel coating 3) Single or dual layer fusion bonded epoxy (primarily for use in combination with a concrete weight coating) 4) 3-layer coatings based on an inner layer of liquid or fusion bonded epoxy applied by spraying, an intermediate adhesive layer applied by spraying or extrusion, and an outer jacket of either polyethylene or polypropylene applied by extrusion 5) Multi-layer coatings as for 4) above but with an intermediate layer of foamed or syntactic polyethylene/polypropylene/polyurethane for the purpose of thermal insulation 6) Polychloroprene (vulcanised rubber) coating (sometimes applied for thermal insulation in addition to corrosion control and mechanical protection) Concrete weight coatings and field joint coatings are not included This document may be fully or partly applicable to pipeline components (e.g. bends, tees, and reducers) using the above or similar coating systems, however, the user shall duly consider the needs for amendments and deviations. Methods, frequency/extent and acceptance criteria for inspection and testing associated with quality control shall be agreed prior to start of production Considerations of safety and environmental hazards associated with pipe coating are beyond the scope of this document. 1.3 Application This Recommended Practice may be used as a guideline for the preparation of manufacturing specifications for external pipeline coating systems as defined in above. It may also be used as an attachment to an inquiry or purchase order specification for such coatings. When referred to in a purchase document, all requirements in this document are mandatory (see Section 3), unless otherwise agreed Besides reference to this document, the following additional information shall be specified in purchase documents (see Section 3), as applicable to the specific coating system and application: Coating type (coating system, colour and/or surface roughness, as relevant) and thickness (5.6.4) Specific requirements to pre-production qualification testing (5.2) Any special requirements to pipe receipt inspection, e.g. checking of dimensions or weight (5.5.3) Requirements to surface preparation by grinding other than cosmetic (5.5.9) Any special requirements to cleanliness of pipe ends and internal surfaces (5.5.7 and 5.6.6) Pipe end configuration, e.g. cut back dimensions, bevelling and any use of end caps or other protection and 5.6.5) Methods and acceptance criteria for testing indicated to be agreed in the applicable Pipeline Coating Data Sheet of the ANNEX (5.7.2) Any additional testing ( i.e. requested by Purchaser) indicated in the Pipeline Coating Data Sheet (5.7.2), and any special conditions for testing (e.g. above ambient temperature) Permissible coating repairs, e.g. maximum number and size (5.8) Specific requirements to pipe tracking, marking and documentation (5.9) Any special requirements to shipping (5.10.3) Any further agreed deviations or amendments to this document. 1.4 Structure of Document Requirements that apply to all types of external linepipe coating systems are given in Section 5 whilst those applicable to a specific system are contained in individual Pipeline Coating Data Sheets in the ANNEX. 1.5 Relation to DNV OS-F DNV OSF101 Submarine Pipeline Systems, Section 8, gives guidelines to the selection of pipeline external corrosion protective coatings, field joint coatings and concrete coatings, and general requirements to their manufacturing. This document (i.e. RPF106) provides detailed requirements for the manufacturing of factory applied external corrosion protective coatings (see 1.3.1).

5 Recommended Practice No. RP-F Normative References The following standards are referred to in this document. The latest editions apply. 2.1 ASTM (American Society for Testing and Materials) ASTM C162 ASTM C518 ASTM D638 ASTM D695 ASTM D696 ASTM D785 ASTM D870 ASTM D1002 Glass and Glass Products, Definition of Terms Test Method for Steady-State Heat Flux Measurements and Thermal transmission Properties by Means of Heat Flow Meter Apparatus Test Method for Tensile Properties of Plastics Test Method for Compressive Properties of Rigid Plastics Test Method for Coefficient of Linear Thermal Expansion of Plastics Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials Practice for Testing Water Resistance of Coating Using Water Immersion Test Method for Apparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Tensile Loading ASTM E797 ASTM G8 ASTM G14 ASTM G17 ASTM G21 ASTM G22 Practice for Measuring Thickness by Manual Pulse-Echo Contact Method Test Method for Cathodic Disbonding of Pipeline Coating Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test) Test Method for Penetration Resistance of Pipeline Coatings Recommended Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi Practice for Determining Resistance of Plastics to Bacteria 2.2 AWWA (American Water Works Association) AWWA C BS (British Standards) BS 410 BS 903 Part A1 BS 903 Part A6 Coal-Tar Enamel Protective Coatings and Linings for Steel Water Pipelines- Enamel and Tape Hot Applied Specification of Test Sieves Physical Testing of Rubber. Determination of Density Method for Testing Vulcanised Rubber. The Resistance of Vulcanised Rubber to Liquids ASTM D1149 ASTM D1238 ASTM D1525 ASTM D2240 ASTM D3895 ASTM D4060 ASTM D4285 Test Method for Rubber Deterioration Surface Ozone Cracking in a Chamber Test Method for Flow Rates of Thermoplastics by Extrusion Plastometer Test Method for Vicat Softening Temperature of Plastics Test Method for Rubber Property- Durometer Hardness Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry Test Method for Abrasion Resistance of Organic Coating by the Taber Abrader Test Method for Indicating Oil or Water in Compressed Air BS 903 Part A16 BS 2000 Part 33 and Part 170 BS 2000 Part 49 BS 3900 Part A6 BS 3900 Part F4 BS 4147 BS 4164 Vulcanised Rubber. Determination of the Effects of Liquids Methods for the Determination of Flash Point by the Abel Apparatus Methods for Determination of Softening Point of Bitumen (Ring and Ball) Paints and varnishes. Determination of Flow Time by Use of Flow Cups Methods of Tests for Paints; Resistance to Continuous Salt Spray Bitumen-Based Hot-Applied Coating Materials for Protecting Iron And Steel, Including Suitable Primers Where Required Coal-Tar-Based Hot-Applied Coating Materials for Protecting Iron And Steel, Including a Suitable Primer

6 6 Recommended Practice No. RP-F106 BS 6374 Lining of Equipment with Polymeric Materials for the Process Industries Part 5. Specification of Lining with Rubber 2.9 ISO (International Organization for Standardization) ISO 34 Rubber, Vulcanised or Thermoplastic. Determination of Tear Strength 2.4 CSA (Canadian Standards Association) CAN/CSA- Z245.20/21 External Fusion Bond Epoxy Coating for Steel Pipe-External Polyethylene Coating for Pipe 2.5 DIN (Deutsche Industrie Normen) DIN DIN DIN DIN DIN Polyethylene Coatings for Steel Pipes and Fittings Umhüllung (Aussenbeschichtigung) von erdverlagten Stahlrohren mit Duroplasten Polypropylene for Steel Pipes 2.6 DNV (Det Norske Veritas) DNV OSF101 Testing of Glass; Determination of Water Resistance (Grain Titration Method) and Classification of Glass in Hydrolytic Classes Prüfung von Kautschuk und Elastomeren. Bestimmung des Abriebs. Submarine Pipeline Systems 2.7 EN (European Standards) EN pren (draft standard) pren (draft standard) Metallic Products Types of Inspection Documents Steel Tubes and Fittings for Onshore and Offshore Pipelines External Three Layer Extruded Polyethylene Based Coatings Steel Tubes and Fittings for Onshore and Offshore Pipelines External Three Layer Extruded Polypropylene Based Coatings 2.8 GBE (Gas Business Engineering/British Gas) GBE/CW6 Technical Specification for the External Protection of Steel Linepipe and Fittings Using Fusion Bonded Powder and Associated Coating Systems ISO 37 Rubber, Vulcanised or Thermoplastic Determination of Tensile Stress- Strain Properties ISO 188 Rubber, Vulcanised or Thermoplastic Accelerated Ageing and Heat- Resistance Tests ISO 306 Plastics-Thermoplastic Materials Determining of Vicat Softening Temperature ISO 527 ISO 815 Plastics Determination of Tensile Properties. Part 1 and 2. Rubber, Vulcanised or Thermoplastic Determination of Compression Set at Ambient, Elevated or Low Temperatures ISO 845 Cellular Plastics and Rubbers Determination of Apparent (Bulk) Density ISO 868 ISO 1133 ISO 1183 ISO 1515 ISO 2409 ISO 2431 ISO 2655 ISO 2808 Plastics and Ebonite Determination of Indentation Hardness by Means of a Durometer (Shore Hardness) Plastics Determination of the Melt Mass-Flow Rate (MFR) and the Melt Volume- Flow-Rate (MVR) of Thermoplastics Plastics Methods for Determining the Density and Relative Density of Non- Cellular Plastics Paints and Varnishes Determination of Volatile and Non-Volatile Matter Paints and Varnishes Cross-Cut Test Paints and Varnishes Determination of Flow Time by Use of Flow Cups Plastics Resins in the Liquid State or as Emulsions or Dispersions Determining of Apparent Viscosity by the Brookfield Test Paints and Varnishes Determination of Film Thickness ISO 2811 Paints and Varnishes Determination of Density

7 Recommended Practice No. RP-F106 7 ISO 2815 Paint and Varnishes Buchholz Indentation Test ISO Surface Roughness Terminology Part 1: Surface and Its Parameters ISO 4624 ISO ISO 7253 ISO ISO ISO ISO ISO ISO ISO Paints and Varnishes Pull-Off Test for Adhesion Plastics Methods of Exposure to Laboratory; Light Sources Paints and Varnishes-Determination of Resistance to Neutral Salt Spray Preparation of Steel Substrate for Application of Paint and Related Products-Visual Assessment of Surface Cleanliness. Part 1: Rust Grades and Preparation Grades of Uncoated Steel Substrates. Preparation of Steel Substrates Before Application of Paints and Related Products-Test for the Assessment of Surface Cleanliness Part 3: Assessment of Dust on Steel Surfaces Prepared for Painting (Pressure Sensitive Tape Method) Part 6: Sampling of Soluble Impurities on Surfaces to be Painted the Bresle Method. Preparation of Steel Substrates Before Application of Paints and Related Products- Surface Roughness Characteristics of Blast Cleaned Substrates Part 2: Method for the Grading of Surface Profile of Abrasive Blast- Cleaned Steel Comparator Procedure Part 4: Method for the Calibration of ISO Surface Profile Comparators and for the Determination of Surface Profile Stylus Instrument Procedure Quality Management- Guidelines for Quality Plans Steel and Steel Products Inspection Documents 2.10 NACE (National Association of Corrosion Engineers) NACE RP0274 High Voltage Electrical Inspection of Pipeline Coatings Prior to Installation 2.11 NF (Normes Francaise) NF A NF A External 3- Layer Polyethylene Based Coating. Application by Extrusion External 3- Layer Polypropylene Based Coating. Application by Extrusion 3. Definitions and Verbal Forms Purchaser Contractor party issuing contract for coating work, or nominated representative party to whom the coating work has been contracted Shall indicates a mandatory requirement Should indicates a preferred course of action May indicates an permissible course of action Agreed/Agreement refers to a written arrangement between Purchaser and Contractor (e.g. as stated in a contract) Report and Notify refers to an action by Contractor in writing Accepted/Acceptance refers to a confirmation by Purchaser in writing Certified refers to confirmation of specified properties issued by Contractor or manufacturer of coating materials according to EN 10204:3.1.B, ISO 10474:5.1.B or equivalent Purchase Document(s) refers to an inquiry/tender or purchase/contract specification, as relevant 4. Abbrevations FBE Fusion Bonded Epoxy ITP Inspection and Testing Plan (see 5.3.1) LE MPS PE PP QPS Liquid Epoxy (Coating) Manufacturing Procedure Specification (see 5.1) Polyethylene (polyethene) Polypropylene (polypropene) (Coating) Pre-Production Qualification Testing (see 5.2) (Coating) Qualification Procedure Specification (see 5.2.2)

8 8 Recommended Practice No. RP-F General Requrements 5.1 Coating Manufacturing Procedure All work associated with coating manufacturing shall be described in procedures which shall be compiled in a Coating Manufacturing Procedure Specification (MPS). This document shall be submitted to Purchaser prior to start of coating work, and shall include: coating materials (incl. manufacturer s product data sheets) surface preparation (general information; for specific requirements, see 5.3) coating application (incl. control of essential process parameters) inspection and testing (general information; for specific requirements, see 5.3) coating repairs and stripping of unrepairable coating. preparation of pipe ends after coating marking and documentation handling and storage of coated and uncoated pipes. Procedures for the last four items are subject to acceptance by Purchaser. Some detailed requirements to items for inclusion in the coating manufacturing specification are given in Pre-Production Qualification Testing () Coating materials (i.e. manufacturer s specification) and coating manufacturing procedures (including repairs) shall be qualified prior to, or (if agreed) during the plant start-up phase. Purchaser may choose to accept results from a previous qualification using identical coating materials and process parameters, and similar pipe dimensions. However, significant changes of process parameters, coating material specification or pipe dimension require re-qualification. Specific requirements to pre-production qualification testing, including e.g. number of pipes to be coated and schedule for reporting, shall be specified in purchase documents (see 1.3.2) If a project specific qualification is to be carried out, a Coating Qualification Procedure Specification (QPS) and a schedule for application, inspection/testing and reporting shall be submitted to Purchaser for acceptance in due time prior to start-up of the qualification activities Coating application temperature, and drying or curing conditions, shall be according to coating material manufacturer s recommendations Purchaser shall have the right to select or accept pipe(s) for inspection and testing. Unless otherwise agreed, test methods and acceptance criteria shall be in accordance with the applicable Pipeline Coating Data Sheet in the ANNEX of this document. Testing of properties included in the Pipeline Coating Data Sheet and with a frequency/extent of testing noted as (see 5.7.2) shall be specified in purchase documents Qualification of coating repairs shall as a minimum include testing for holidays and adhesion Results from all inspection, testing and calibrations during qualification, essential operational parameters for coating, and coating material certificates shall be compiled in a report. If stated in purchase documents, the report shall be accepted by Purchaser prior to start of production. 5.3 Quality Control Prior to start-up of production, Contractor shall submit to Purchaser for acceptance: - MPS updated to reflect the process parameters used during the (if different from those specified in the MPS submitted to Contractor prior to ) - a project specific Inspection and Testing Plan (ITP) meeting the general requirements of ISO 10005, Section The plan shall describe all quality control activities with reference to the inspection, testing and calibration procedures that shall apply for the specific project - a daily log format (see 5.7.5) Unless otherwise agreed (see 1.3.2), methods and frequency of inspection and testing, as well as acceptance criteria shall be in accordance with the applicable Pipeline Coating Data Sheet in the ANNEX of this document The MPS, ITP, and daily log shall be in English, unless otherwise agreed Procedures and work instructions referenced in the ITP, and applicable acceptance criteria, shall be available to all persons concerned with the associated work Purchaser shall have the right to inspect all activities associated with coating manufacturing, including surface preparation and inspection/testing of coated pipes. Purchaser shall identify any hold points for witnessing (see 5.7.1) in the ITP and inform Contractor accordingly. 5.4 Coating Materials Contractor shall verify that all coating materials and abrasives received are in accordance with the specified requirements in the purchase order/product data sheet. The verification may include actual testing by Contractor himself (or by a third party), and/or review of manufacturer s certificates. Any verification testing to be performed by Contractor shall be included in the ITP Testing of coating material properties may relate to properties of raw materials (i.e. as delivered ), or to properties of processed materials (i.e. as-applied ). In the latter case, test panels with applied coating, or specially prepared coating layers (i.e. without substrate) are used.

9 Recommended Practice No. RP-F Coating material properties related to raw materials as delivered for coating shall be certified (see 3) per batch/lot, in accordance with the relevant Pipeline Coating Data Sheet in the ANNEX. (In the case of continuous production, batches will not apply and a lot shall be defined based on e.g. hours or weight/volume of production). For certain asapplied properties of the coating, and in particular those related to resistance to long-term environmental degradation, data for a representative product specification (i.e. not batch/lot specific) will normally apply. Purchaser may require witnessing or third party testing of as-applied coating material properties in order to qualify a specific coating product, or to verify properties of individual batches/lots of coating material. (To be specified in purchase documents if applicable) Until compliance with specified requirements has been confirmed, the coating materials received by Contractor shall be kept physically separated from checked materials. Any materials checked and found non-conforming shall be clearly marked and quarantined All materials to be used for surface preparation and coating of pipes shall be contained in their original packing until use and shall be adequately marked, including: manufacturer s name material type batch/lot number weight (for materials in drums, bags or similar) size (for materials in rolls or similar) date of manufacturing (and shelf life, if applicable) manufacturing standard (if applicable) Contractor shall ensure that all materials for coating and surface preparation are stored and handled so as to avoid damage by climatic or other effects. Manufacturer s recommendations for storage and use shall be readily available for Purchaser s review Recycled coating materials may be used if detailed in the MPS, stating e.g. requirements to cleaning and maximum addition to virgin coating material. It shall further be demonstrated that such use does not affect the specified properties. 5.5 Initial (Receipt) Inspection of Pipes and Surface Preparation All surface preparation and associated inspection and monitoring activities shall be carried out according to the qualified MPS (5.1) and ITP (5.3.1). Methods, acceptance criteria and frequency/extent of inspection and testing shall comply with requirements given in the Pipeline Coating Data Sheets in the ANNEX, and/or amendments in purchase documents (see 1.3.2) if applicable Linepipe may be delivered to Contractor with or without a temporary external corrosion protection (e.g. varnish type). On receipt, every pipe shall be identified by a unique number and any additional marking to maintain identity shall be performed as specified or accepted by Purchaser (5.9.1). Intermediate storage of pipes shall be according to Each pipe shall be subject to an initial visual examination. Particular emphasis shall be laid on examination of pipe ends. Pipes with severe damage such as dents, ovality, cuts and other defects that cannot be corrected by surface dressing shall be removed and Purchaser notified accordingly. Any requirements to checking of pipe dimensions and/or weight shall be specified in purchase documents Salts, soils and other loose contamination shall be removed from the pipe surface using a suitable water-based cleaning method (e.g. high-pressure fresh water or brushing). Organic contaminants like oil and grease shall be removed by using suitable solvents or detergents. Purchaser shall be notified promptly if the surface condition of the received pipes is deemed to affect the quality of the coating Pipe surfaces shall be prepared for coating using blast cleaning to provide a surface cleanliness and surface roughness (anchor pattern) as specified in the applicable Pipeline Coating Data Sheet of the ANNEX. Relevant properties of blasting materials shall be documented. The blasting material and pressurised air system shall be kept dry and free from injurious contaminants, including salts, oil and grease. Recycled blasting material shall be checked for cleanliness at regular intervals (to be specified in the ITP). Checking of oil contamination shall be carried out according to ASTM D For stainless steel pipes, abrasives shall be based on fused aluminium oxide or stainless steel shot according to an appropriate standard. Precautions shall be taken to avoid contamination by e.g. residual C-steel particles Special protection of machined bevels and/or internal surfaces, e.g. by use of end caps during cleaning, may apply. (To be specified in purchase documents) During blast cleaning, the pipe surface shall be at least 3 o 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 After the blast cleaning, the pipes shall be thoroughly checked. Marking of defects (if applicable) shall be carried out using French Chalk only. Any slivers, swabs, burns, laminations or gouges shall be removed by cosmetic grinding. (Requirements to more excessive grinding shall be specified in purchase documents). The remaining wall thickness shall comply with the applicable linepipe specification. (Checking of remaining wall thickness by ultrasonic testing shall be according to ASTM E797 or equivalent). Pipes with any dressed area larger than 10 cm 2 shall be completely re-blasted. Unrepairable pipes shall be quarantined and Purchaser notified accordingly.

10 10 Recommended Practice No. RP-F Dust or abrasive remains shall be removed from the pipe surface using dry clean air, vacuum cleaning or brushing. Surface cleanliness and roughness shall be verified as detailed in the applicable Pipeline Coating Data Sheet in the ANNEX. Measurements of residual salt contamination may be performed using special proprietary equipment if specified in the inspection and testing plan, and provided that compliance with the referenced standard can be demonstrated. Pipes not meeting specified requirements shall be subject to new blast cleaning or rejection Special precautions shall be taken to avoid rusting and/or contamination after completed surface preparation. Requirements to maximum duration (in hours) between blasting and coating, and/or maximum relative humidity shall be specified in the MPS Mechanical surface preparation may be followed by a chemical treatment if stated in the MPS. 5.6 Coating Application All coating work shall be carried out according to the qualified MPS (see 5.1) Throughout coating application, essential parameters affecting the quality of the coating (e.g. application temperature of linepipe and coating materials, relative humidity, etc) shall be monitored on-line and recordings noted in the daily log (5.7.5). For certain coating systems, the application temperature shall be continuously monitored as specified in the applicable Pipeline Coating Data Sheet in the ANNEX.Equipment for monitoring shall be calibrated at scheduled intervals as specified in the ITP (5.3.1) Coated pipes shall be traceable to individual batches/lots of coating materials Coating thickness (nominal and minimum values of individual layers, maximum if applicable) shall be defined in purchase documents (i.e. unless thickness is stated in the Pipeline Coating Data Sheet) The length and surface condition of pipe ends to be left uncoated (or cut-back if applicable), and any chamfering of edges, shall be detailed in purchase documents. Any use of temporary coatings or tapes to mask coating application at pipe ends shall be described in the MPS Any remainders of coating or blasting materials on the internal pipe surface shall be removed. Special requirements to cleanliness of internal surfaces, if applicable, shall be specified in purchase documents. 5.7 Inspection and Testing of Coated Pipes Coated pipes shall be inspected and tested according to the ITP (5.3.1). Purchaser shall be allowed to witness all inspection and testing. For special hold points identified by Purchaser (see5.3.5), Contractor shall give adequate notice for Contractor to arrange for witnessing Inspection and testing of coated pipes during qualification and production shall be carried out according to the applicable methods, acceptance criteria and frequencies specified in the applicable Pipeline Coating Data Sheet and any amendments made in purchase documents (see 1.3.2). The following notes apply to all Pipeline Coating Data Sheets: According to ITP means that testing method and/or acceptance criteria (as applicable) shall be defined in the ITP under Frequency/Qualification means that testing shall be included during qualification. to be agreed means that testing shall be carried out, and that test method and/or acceptance criteria (as applicable) are subject to agreement (preferably to be specified in purchase documents). means that Purchaser may require testing, and that methods and acceptance criteria are subject to agreement (to be specified in purchase documents) Failures during testing which are obviously due to defective sampling or operational errors of testing equipment may be disregarded and testing repeated on the same pipe Individual pipes not meeting specified criteria shall be re-coated, or if possible (see 5.8), repaired. In case of failure of a pipe coating during fractional testing (e.g. each 20 th pipe or twice per shift), the preceding and following pipes shall be tested individually until at least 3 successive pipes show adequate properties. In the case of repeated failures to meet specified acceptance criteria, Purchaser may require testing frequency to be increased. Similarly, subject to acceptance by Purchaser, testing frequency may be reduced as a result of successful testing demonstrating adequate quality All data from inspection and testing of coated pipes, major coating repairs, essential operating parameters (e.g. application temperature, pipe feed rate, etc.) and calibration of testing and monitoring equipment, shall be noted in a daily log. For pipe specific data, reference shall be made to the unique pipe number (5.5.2). The log shall be up-dated on a daily basis and is to be available for Purchaser s review at any time during manufacturing. 5.8 Repairs Maximum permissible repairs (e.g. maximum surface area of individual repair, maximum repairs per pipe and maximum number of pipes with repairs) and requirements to documentation of repairs shall be specified in purchase documents (1.3.2).

11 Recommended Practice No. RP-F Stripping of unrepairable coating for re-coating shall be carried out according to a procedure accepted by Purchaser. Coating repairs shall be carried out and inspected according to a qualified procedure (5.1). 5.9 Documentation and Marking Specific requirements to pipe tracking (e.g. electronic format), marking and documentation format shall be specified in purchase documents (1.3.2) Results from inspection and testing during qualification and production shall be documented and be traceable to a unique pipe number and individual coating material batches/lots. For specific requirements to a daily log, see Documentation, including coating material certificates, shall be retained by Contractor for minimum 5 years, or as agreed upon Contractor shall issue an inspection document corresponding to the requirements given in EN 10204, inspection certificate 3.1.B or ISO 10474, inspection certificate 5.1.B Handling and Storage of Pipes Pipes shall be handled and stored such that damage to coated and uncoated surfaces is avoided. The applicable procedure is subject to acceptance by Purchaser. Stainless steel pipes require special considerations to avoid surface contamination (e.g. from use of C-steel tools). Purchaser may require documentation (e.g. by calculations) that a specified maximum stack height cannot cause any damage Damage to coatings during handling or storage shall be repaired according to 5.8, whilst any damage to linepipe material shall be reported to Purchaser. (Damaged pipes shall be separated and quarantined) Any packaging or other means of protection of coated pipes for shipping shall be defined in purchase documents (1.3.2).

12 12 Recommended Practice No. RP-F106

13 Recommended Practice No. RP-F ANNEX Coating Data Sheet No.1: 3-Layer Polyethylene or Polypropylene Coating (3 pages) Coating Configuration Epoxy primer Polymeric adhesive Polyethylene or polypropylene outer sheath Total thickness Coating Materials FBE: min µm, max. 550µm (to be agreed for inclusion in ITP) LE: min µm ( to be agreed for inclusion in ITP) According to ITP According to ITP min. 2.0 mm (to be agreed for inclusion in ITP) Item/Property Test method Acceptance criteria Frequency Epoxy primer material Density (FBE/LE) ISO 2811 According to product data sheet Every batch/lot Particle size (FBE) According to product data sheet According to product data sheet Every batch/lot Max. moisture content (FBE) According to product data sheet According to product data sheet Every batch/lot Gel time (FBE) According to product data sheet According to product data sheet Every batch/lot Glass transition temperature (FBE) Viscosity of base and hardener (LE) Volume solids of the base and hardener (LE) NF A /711 (pren 10285/10286) or GBE/CW6 part 1, App. A According to product data sheet (min. 5 o C above pipeline max. operating temperature) Every batch/lot ISO 2655 According to product data sheet Every batch/lot ISO 1515 According to product data sheet Every batch/lot Infrared scan Water resistance ASTM D870, No blistering, 3000 hrs at 85 o C or swelling < 5 % Loss of hardness <10 % GBE/CW6 part 1, App. A According to standard Salt spray test Cathodic disbonding Adhesive material ISO 7253, 4000 hrs or BS 3900, Part F4 ASTM G8 or GBE/CW6, part 1, App. E or NF A /711 (pren 10285/10286) or other agreed procedure No rusting, no blistering Density ISO 1183 According to product data sheet Every batch/lot Particle size (for spraying) According to product data sheet According to product data sheet Every batch/lot Melt flow index/rate ISO 1133 or ASTM D1238 According to product data sheet Every batch/lot Softening point (Vicat) ISO 306 or ASTM D1525 According to product data sheet Every batch/lot Polyethylene or Polypropylene material Density ISO 1183 According to product data sheet Every batch/lot Melt flow index/rate ISO 1133 or ASTM D1238 According to product data sheet Every batch/lot Softening point (Vicat) ISO 306 or ASTM D1525 According to product data sheet Every batch/lot Thermostabilisation ASTM D3895 UV resistance Abrasion resistance ISO or DIN or NF A /711 (pren 10285/10286) ASTM D4060 or DIN (ISO) or according to standard (NF/EN) Fungi resistance ASTM G21 no growth

14 14 Recommended Practice No. RP-F106 Coating Data Sheet No.1: 3-Layer Polyethylene or Polypropylene Coating (3 pages) Item/Property Test method Acceptance criteria Frequency Bacteria resistance ASTM G22 no growth Water absorption BS 903, A16 Thermal conductivity ASTM C518 Thermal stability/ageing DIN or NF A /711 (pren 10285/10286) According to standard or Linear expansion ASTM D696 Modulus of elasticity Surface Preparation ASTM D638 5 mm/min Item/Property Test method Acceptance criteria Initial surface condition Pipe temperature and relative humidity Salt contaminnation after blast cleaning Visual examination According to ITP ISO or agreed method Dry and free from contamination (oil, grease, etc.) and surface defects Pipe temperature min. 3 o C above dew point Frequency Every pipe Production Minimum once per hour max. 20 mg NaCl/m 2 First 5, then 1/30 both pipe ends Surface cleanliness ISO A/B Sa 2 ½. Every pipe Surface cleanliness ISO Rating max. 2 First 5, then 1/30 both pipe ends Surface roughness ISO R Y5 min. 40 µm; max 100 µm First 5, then 1/30 both pipe ends Final surface condition Pipe temperature prior to chemical treatment (if specified in MPS) Visual examination Free from surface defects Every pipe According to ITP According to ITP Continuous monitoring Coating Pre-Production Qualification Testing () and Production Control Item/Property: Test method Acceptance criteria Epoxy layer Frequency Production Pipe temperature According to ITP According to ITP Continuous monitoring Thickness ISO 2808 or Degree of cure FBE: differential thermal analysis according to NF A /711 (pren 10285/10286) or LE: According to ITP According to ITP First pipe and start/lead pipe 1), then one pipe every shift (to be performed by allowing application to limited area of masked pipe end) FBE: T G = max 2 o C LE: According to ITP First pipe, start/lead pipe 1) then one pipe every shift. (to be performed by allowing application to limited area of masked pipe end) Hardness ISO 2815 Adhesion ISO 2409 or ISO 4624 or DIN or Classification: 0 (ISO 2409) min. 34 MPa (ISO 4624) No detachment (DIN 30671) Porosity CAN/CSA-Z245.20

15 Recommended Practice No. RP-F Coating Data Sheet No.1: 3-Layer Polyethylene or Polypropylene Coating (3 pages) 1) start/lead pipe refers to first pipe after interupted coating Item/Property: Test method Acceptance criteria Adhesive Layer Frequency Production Thickness According to ITP According to ITP Full layer Coating material and pipe temperatures According to ITP According to ITP Continuous monitoring Pipe feed rate According to ITP According to ITP Continuous monitoring Appearance of coating Pipe end configuration Holiday detection Visual According to ITP, Every pipe, According to ITP According to ITP Every pipe, both pipe ends NACE RP0274, 10 kv/mm nominal thickness, max 25 kv, mm/s or NF A /711 (pren 10285/10286) Thickness NF A /711 (pren 10285/10286) or agreed procedure Adhesion (peel strength) Impact resistance Indentation resistance Elongation at break Tensile strength Hardness Bending resistance (flexibility) Electrical insulation capacity Cathodic disbonding NF A /711 (pren 10285/10286) or DIN 30670/30678 NF A /711 (pren 10285/10286) or DIN 30670/30678 NF A /711 (pren 10285/10286) or DIN 30670/30678 ASTM D638 or ISO 527 or NF A /711 (pren 10285/10286) ASTM D638 or ISO 527 or NF A /711 (pren 10285/10286) ASTM D785 or ISO 868 no holidays, Every pipe, (visual/accoustic alarm function) According to purchase order and ITP Every pipe or min. 150 N/cm, 20 o C Testing at higher temperature by agreement First pipe and start/lead pipe 1), then one per shift, both pipe ends according to standard First pipe and start/lead pipe 1), or max 0.10 mm, 20 o C Testing at higher temperature by agreement PE: min. 400%, 20 o C PP: min. 300%, 20 o C Testing at higher/lower temperature by agreement First pipe for each PE/PP batch First pipe for each PE/PP batch First pipe for each PE/PP batch not applicable NF A /711 (pren 10285/10286) ASTM G8 or GBE/CW6 or NF A /711 (pren 10285/10286 or other agreed procedure not applicable not applicable Shear strength ASTM D1002 not applicable Heat resistance (by melt flow index) NF A /711 (pren 10285/10286 Residual magnetism

16 16 Recommended Practice No. RP-F106 Coating Data Sheet No.1: 3-Layer Polyethylene or Polypropylene Coating 1) start/lead pipe refers to first pipe after interupted coating (3 pages)

17 Recommended Practice No. RP-F Coating Data Sheet No.2: Multi-Layer Polyethylene or Polypropylene Coating (1 page) Coating Configuration (typical) Epoxy primer Polymeric adhesive Polyethylene or polypropylene intermediate sheath Polyethylene or polypropylene foam or syntactic layer Polyethylene or polypropylene outer sheath Total thickness Coating Materials FBE: min µm, max. 500 µm (to be agreed for inclusion in ITP) LE: min µm, (to be agreed for inclusion in ITP) According to ITP According to ITP To be agreed for inclusion in ITP According to ITP To be agreed for inclusion in ITP Item/Property Test method Acceptance criteria Frequency Epoxy primer material Adhesive material as for 3-layer coatings as for 3-layer coatings as for 3-layer coatings as for 3-layer coatings as for 3-layer coatings as for 3-layer coatings Polyethylene or Polypropylene Foam Material Density According to product data sheet According to product data sheet Every batch or delivery Melt index ISO 1133 According to product data sheet Every batch or delivery Softening point ISO 306 According to product data sheet Every batch or delivery Elongation ISO 527 According to product data sheet Every batch or delivery Polyethylene or Polypropylene Sheathing Material Surface Preparation as for 3-layer coatings as for 3-layer coatings as for 3-layer coatings Properties Test method Acceptance criteria Frequency As for 3-layer coatings Coating Pre-Production Qualification Testing () and Production Control Item/Property Test method Acceptance criteria Epoxy layer Frequency Production As for 3-layer coatings Adhesive layer As for 3-layer coatings Foam layer Density ISO 845 to be agreed First day 1/10 then 1/50 Compressive strength ASTM D695 to be agreed to be agreed Tensile strength ASTM D638 According to ITP not applicable Full layer As for 3-layer coatings

18 18 Recommended Practice No. RP-F106 Coating Data Sheet No.3: Single or Dual Layer Fusion Bonded Epoxy Coating (2 pages) Coating Configuration Epoxy layer FBE: min. 500 µm (to be agreed) Coating Materials Epoxy material Item/Property Test method Acceptance criteria Frequency Density ISO 2811 According to product data sheet Every batch/lot Particle size According to product data sheet According to product data sheet Every batch/lot Max. moisture content According to product data sheet According to product data sheet Every batch/lot Gel time According to product data sheet According to product data sheet Every batch/lot Glass transition temperature GBE/CW6 part 1, App. A According to product data sheet (min. 5 o C above pipeline max. operating temperature) Every batch/lot Infrared scan Water resistance ASTM D870, 3000 hrs at 85 o C or GBE/CW6 part 1, App. E No blistering, swelling < 5 % Loss of hardness <10 % According to standard Impact resistance GBE/CW6 part 1, App. D Salt spray test ISO 7253, 4000 hrs or BS 3900, Part F4 No rusting, no blistering Cathodic disbonding ASTM G8 or GBE/CW6, part 1, App. E or or other agreed procedure Surface Preparation Item/Property Test method Acceptance criteria Frequency Production Initial surface condition Visual examination Dry and free from contamination (oil, grease, etc.) and surface defects Every pipe Pipe temperature and relative humidity According to ITP Pipe temperature min. 3 o C above dew point Minimum once per hour Salt contamination after blast cleaning ISO or agreed method max. 20 mg NaCl/m 2 First 5, then 1/30 both pipe ends Surface cleanliness ISO A/B Sa 2 ½. Every pipe Surface cleanliness ISO Rating max. 2 First 5, then 1/30 both pipe ends Surface roughness ISO R Y5 min. 40 µm; max 100 µm First 5, then 1/30 both pipe ends Final surface condition Visual examination Free from surface defects Every pipe Pipe temperature prior to chemical treatment (if specified in MPS) According to ITP According to ITP Continuous monitoring

19 Recommended Practice No. RP-F Coating Data Sheet No.3: Single or Dual Layer Fusion Bonded Epoxy Coating (2 pages) Coating Pre-Production Qualification Testing () and Production Control Item/Property Test method Acceptance criteria Frequency Production Pipe temperature According to ITP According to ITP Continuous monitoring Thickness to be agreed Coating material and pipe temperatures According to ITP According to ITP Continuous monitoring Pipe feed rate According to ITP According to ITP Continuous monitoring Appearance of coating Visual According to ITP, Every pipe, Pipe end configuration According to ITP According to ITP Every pipe, both pipe ends Holiday detection GBE/CW6 part 1, App. E or Thickness ISO 2808 or Degree of cure Adhesion FBE: differential thermal analysis according to GBE/CW6 or ISO 2409 or ISO 4624 or DIN or no holidays, Every pipe, (visual/accoustic alarm function) According to ITP First pipe and start/lead pipe, then one pipe every shift 4 recordings (90 o ) at both pipe ends and mid section FBE: T G = max 2 o C First pipe, start/lead pipe 1) Classification: 0 (ISO 2409) min. 34 MPa (ISO 4624) no detachment (DIN 30671) Impact resistance GBE/CW6 part 1, App. D to be agreed not applicable Hardness ISO 2815 Porosity CAN/CSA-Z Cathodic disbonding ASTM G8 or GBE/CW6, part 1, App. E or or other agreed procedure Residual magnetism 1) start/lead pipe refers to first pipe after interrupted coating then one pipe every shift (to be performed by allowing application to limited area of masked pipe end) By agreement (to be performed by allowing application to limited area of masked pipe end, if applicable)

20 20 Recommended Practice No. RP-F106 Coating Data Sheet No.4: Asphalt Enamel (or Bitumen ) Coating (2 pages) Coating Configuration Primer Asphalt Enamel Inner wrapping Outer wrapping Coating Materials Dry Film Thickness: min. 15 µm (20 ±5 µm) Type: BS 4147, Type B Thickness: 4-6 mm Type: BS 4147, Type 2 Grade b Thickness: min. 0.3 mm Type: Non woven fibre tissue consisting of uniformly porous mat of glass; Thickness: min. 0.6 mm Type: Glass fibre, e.g. regular weaving of continuous glass filaments in the wrap and of glass filament or of single or double staple glass fibres in the wool, with small amounts of binder Item/Property Test method Acceptance criteria Frequency Primer material Volatile matter BS 4147Appendix A According to BS 4147 Table 3 Every batch/lot Viscosity BS 3900 Part A6 or ISO 2431 According to BS 4147 Table 3 Every batch/lot Filler material Filler fineness BS 410 > 99 % passing 250 µm sieve Asphalt enamel material > 90 % passing 250 µm sieve Every batch/lot Filler content BS 4147 Appendix B According to BS 4147 Table 6 Every batch/lot Density BS 4147 Appendix C According to BS 4147 Table 6 Every batch/lot Softening point BS 2000, Part 49 According to BS 4147 Table 6 Every batch/lot Penetration BS 4147 Appendix D According to BS 4147 Table 6 Every batch/lot, twice per shift Sag test BS 4147 Appendix E According to BS 4147 Table 7 First batch/lot, then every 10 th Impact test BS 4147 Appendix G According to BS 4147 Table 7 First batch/lot, then every 10 th Bend test BS 4147 Appendix F According to BS 4147 Table 7 First batch/lot, then every 10 th Peel test BS 4147 Appendix H According to BS4 147 Table 7 First batch/lot, then every 10 th Inner wrapping material Hydrolytic class DIN or equivalent min. Class 3 Every batch/lot Weight According to ITP min. 42 g/m 2 Every batch/lot Binder content According to ITP 10-18% of total weight Every batch/lot Thickness According to ITP min. 0.3 mm Every batch/lot Tensile strength According to ITP Longitudinal: min. 100 N / 5 cm strip Lateral: min 25 N / 5 cm strip Outer wrapping material Every batch/lot Hydrolytic class Same as for inner wrapping Every batch/lot Weight According to ITP min. 460 g/m 2 Every batch/lot Glass content According to ITP min. 170 g/m² Every batch/lot Thickness According to ITP min. 0.6 mm Every batch/lot Tensile strength According to ITP Longitudinal and lateral: min 800 N/ 5 cm strip Every batch/lot