Download - Coating Corrosion Rp f106
RECOMMENDED PRACTICENo. RP-F106
DET NORSKE VERITASVeritasveien 1, N-1322 Høvik, Norway Tel.: +47 67 57 99 00 Fax: +47 67 57 99 11
FACTORY APPLIED EXTERNAL PIPELINE COATINGSFOR CORROSION CONTROL
MARCH 2000
© Det Norske Veritas AS 2000Data processed and typeset by Division Technology and Products, Det Norske Veritas AS
Printed in Norway by Det Norske Veritas AS
FOREWORDDET NORSKE VERITAS (DNV) is an autonomous andindependent Foundation with the objectives ofsafeguarding life, property and the environment, at sea andonshore. DNV undertakes classification, certification, andother verification and consultancy services relating toquality of ships, offshore units and installations, andonshore industries world-wide, and carries out research inrelation to these functions.
DNV publishes various documents related to the offshoreindustry, aimed at promoting quality and safety onoffshore units and installations. These documents arepublished within a frame consisting of ServiceSpecifications, Standards and Recommended Practices, seefigure below.
DNV OFFSHORE
STANDARDS
OTHER DNV STANDARDS
DNV OFFSHORE
SERVICESPECIFICATIONS.
DNV GUIDELINES
& NOTESDNV RECOMMENDED PRACTICES
TECH
NICAL
PART
PROC
EDUR
AL P
ART
INTERNATIONAL CODES/STANDARDS
INTERNAT. RPs ETC.
The procedural basis for offshore verification services areprovided in DNV Offshore Service Specifications (OSS-series). The OSS-series of documents are divided into 3parts:
− Classification− Shelf Legislation Compliance Services− Certification and other Services
The technical requirements forming the basis for theverification services are given in DNV Offshore Standards(OS-series) as well as other codes and standards cited byDNV. The DNV OS-series is divided into 6 parts:
A. Quality and Safety MethodologyB. Materials TechnologyC. StructuresD. SystemsE. Special FacilitiesF. Pipelines & Risers
The Recommended Practice publications (RP-series) coverproven technology and solutions which have been foundby DNV to represent good practice, and which representone alternative for satisfying the requirements stipulated inthe DNV Offshore Standards or other codes and standardscited by DNV. The DNV RP-series is divided into 6 parts,identical to OS.
As well as forming the technical basis for DNVverification services, the Offshore Standards andRecommended Practices are offered as DNV’sinterpretation of safe engineering practice for general useby the offshore industry.
Comments may be sent by e-mail to [email protected] . For subscription orders or information about subscription terms, please use [email protected] .
Comprehensive information regarding DNV services, research and publications can be found at http://www.dnv.com , or can be obtained from DNV,Veritasveien 1, N-1322 Høvik, Norway; Tel +47 67 57 99 00, Fax +47 67 57 99 11.
© 2000 DET NORSKE VERITAS. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, includingphotocopying and recording, without the prior written consent of DET NORSKE VERITAS.
Printed in Norway by Det Norske Veritas AS
DET NORSKE VERITAS
CONTENTS
1. General .............................................................................. 41.1 Introduction........................................................................41.2 Scope...................................................................................41.3 Application.........................................................................41.4 Structure of Document .....................................................41.5 Relation to DNV OS−F101..............................................42. Normative References ................................................... 52.1 ASTM (American Society for Testing and
Materials)............................................................................52.2 AWWA (American Water Works Association) ..........52.3 BS (British Standards)......................................................52.4 CSA (Canadian Standards Association)........................62.5 DIN (Deutsche Industrie Normen).................................62.6 DNV (Det Norske Veritas)..............................................62.7 EN (European Standards)................................................62.8 GBE (Gas Business Engineering/British Gas).............62.9 ISO (International Organization for
Standardization).................................................................62.10 NACE (National Association of Corrosion
Engineers)...........................................................................72.11 NF (Normes Francaise)....................................................73. Definitions and Verbal Forms .................................... 74. Abbrevations ................................................................... 75. General Requrements ................................................... 85.1 Coating Manufacturing Procedure .................................8
5.2 Pre-Production Qualification Testing (PQT)................85.3 Quality Control..................................................................85.4 Coating Materials ..............................................................85.5 Initial (Receipt) Inspection of Pipes and Surface
Preparation..........................................................................95.6 Coating Application........................................................105.7 Inspection and Testing of Coated Pipes ......................105.8 Repairs ..............................................................................105.9 Documentation and Marking.........................................115.10 Handling and Storage of Pipes......................................11
ANNEX
Coating Data Sheet No.1:3-Layer Polyethylene or Polypropylene Coating..............13Coating Data Sheet No.2:Multi-Layer Polyethylene or Polypropylene Coating 17 17Coating Data Sheet No.3:Single or Dual Layer Fusion Bonded Epoxy Coating......18Coating Data Sheet No.4:Asphalt Enamel (or “Bitumen”) Coating ...........................20Coating Data Sheet No.5:Coal Tar Enamel Coating......................................................22Coating Data Sheet No.6:Polychloroprene (or “Vulcanised Rubber”) Coating .......24
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1. General
1.1 Introduction1.1.1 Submarine pipelines require external coatings withthe primary objective of corrosion protection. Certain coatingsystems are additionally designed to provide mechanicalprotection during installation and operation, or thermalinsulation. A corrosion protective coating is sometimescombined with a concrete coating for anti-buoyancy and/ormechanical protection during operation.
1.1.2 Pipeline coatings for external corrosion control areapplied to individual pipe lengths (typically about 12 meters)in a factory. The areas of the pipeline left uncoated tofacilitate girth welding are normally coated after weldingwith a so-called field joint coating system.
1.2 Scope1.2.1 This Recommended Practice includes the followingexternal coating systems for corrosion control of marinepipelines (including associated risers):
1) Glass fibre reinforced asphalt enamel coating2) Glass fibre reinforced coal tar enamel coating3) 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, anintermediate adhesive layer applied by spraying orextrusion, and an outer jacket of either polyethylene orpolypropylene applied by extrusion
5) Multi-layer coatings as for 4) above but with anintermediate layer of foamed or syntacticpolyethylene/polypropylene/polyurethane for thepurpose of thermal insulation
6) Polychloroprene (vulcanised rubber) coating (sometimesapplied for thermal insulation in addition to corrosioncontrol and mechanical protection)
Concrete weight coatings and field joint coatings are notincluded.
1.2.2 This document may be fully or partly applicable topipeline components (e.g. bends, tees, and reducers) usingthe above or similar coating systems, however, the user shallduly consider the needs for amendments and deviations.Methods, frequency/extent and acceptance criteria forinspection and testing associated with quality control shall beagreed prior to start of production.
1.2.3 Considerations of safety and environmental hazardsassociated with pipe coating are beyond the scope of thisdocument.
1.3 Application1.3.1 This Recommended Practice may be used as aguideline for the preparation of manufacturing specificationsfor external pipeline coating systems as defined in 1.2.1
above. It may also be used as an attachment to an inquiry orpurchase order specification for such coatings. Whenreferred to in a purchase document, all requirements in thisdocument are mandatory (see Section 3), unless otherwiseagreed.
1.3.2 Besides reference to this document, the followingadditional information shall be specified in purchasedocuments (see Section 3), as applicable to the specificcoating system and application:
− Coating type (coating system, colour and/or surfaceroughness, as relevant) and thickness (5.6.4)
− Specific requirements to pre-production qualificationtesting (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 otherthan “cosmetic” (5.5.9)
− Any special requirements to cleanliness of pipe ends andinternal 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 protection5.5.7 and 5.6.5)
− Methods and acceptance criteria for testing indicated“to be agreed” in the applicable Pipeline Coating DataSheet of the ANNEX (5.7.2)
− Any additional testing ( i.e. requested by Purchaser)indicated “by agreement” in the Pipeline Coating DataSheet (5.7.2), and any special conditions for testing (e.g.above ambient temperature)
− Permissible coating repairs, e.g. maximum number andsize (5.8)
− Specific requirements to pipe tracking, marking anddocumentation (5.9)
− Any special requirements to shipping (5.10.3)− Any further agreed deviations or amendments to this
document.
1.4 Structure of Document1.4.1 Requirements that apply to all types of externallinepipe coating systems are given in Section 5 whilst thoseapplicable to a specific system are contained in individualPipeline Coating Data Sheets in the ANNEX.
1.5 Relation to DNV OS−F101
1.5.1 DNV OS−F101 “Submarine Pipeline Systems”,Section 8, gives guidelines to the selection of pipelineexternal corrosion protective coatings, field joint coatingsand concrete coatings, and general requirements to theirmanufacturing. This document (i.e. RP−F106) providesdetailed requirements for the manufacturing of factoryapplied external corrosion protective coatings (see 1.3.1).
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2. Normative ReferencesThe following standards are referred to in this document. Thelatest editions apply.
2.1 ASTM (American Society for Testing andMaterials)
ASTM C162 Glass and Glass Products, Definition ofTerms
ASTM C518 Test Method for Steady-State HeatFlux Measurements and Thermaltransmission Properties by Means ofHeat Flow Meter Apparatus
ASTM D638 Test Method for Tensile Properties ofPlastics
ASTM D695 Test Method for CompressiveProperties of Rigid Plastics
ASTM D696 Test Method for Coefficient of LinearThermal Expansion of Plastics
ASTM D785 Test Method for Rockwell Hardness ofPlastics and Electrical InsulatingMaterials
ASTM D870 Practice for Testing Water Resistanceof Coating Using Water Immersion
ASTM D1002 Test Method for Apparent ShearStrength of Single-Lap-JointAdhesively Bonded Metal Specimensby Tensile Loading
ASTM D1149 Test Method for Rubber Deterioration– Surface Ozone Cracking in aChamber
ASTM D1238 Test Method for Flow Rates ofThermoplastics by ExtrusionPlastometer
ASTM D1525 Test Method for Vicat SofteningTemperature of Plastics
ASTM D2240 Test Method for Rubber Property-Durometer Hardness
ASTM D3895 Test Method for Oxidative-InductionTime of Polyolefins by DifferentialScanning Calorimetry
ASTM D4060 Test Method for Abrasion Resistanceof Organic Coating by the TaberAbrader
ASTM D4285 Test Method for Indicating Oil orWater in Compressed Air
ASTM E797 Practice for Measuring Thickness byManual Pulse-Echo Contact Method
ASTM G8 Test Method for Cathodic Disbondingof Pipeline Coating
ASTM G14 Test Method for Impact Resistance ofPipeline Coatings (Falling WeightTest)
ASTM G17 Test Method for Penetration Resistanceof Pipeline Coatings
ASTM G21 Recommended Practice forDetermining Resistance of SyntheticPolymeric Materials to Fungi
ASTM G22 Practice for Determining Resistance ofPlastics to Bacteria
2.2 AWWA (American Water Works Association)AWWA C-203 Coal-Tar Enamel Protective Coatings
and Linings for Steel Water Pipelines-Enamel and Tape Hot Applied
2.3 BS (British Standards)BS 410 Specification of Test Sieves
BS 903 Part A1 Physical Testing of Rubber.Determination of Density
BS 903 Part A6 Method for Testing VulcanisedRubber. The Resistance of VulcanisedRubber to Liquids
BS 903 Part A16 Vulcanised Rubber. Determination ofthe Effects of Liquids
BS 2000 Part 33and Part 170
Methods for the Determination of FlashPoint by the Abel Apparatus
BS 2000 Part 49 Methods for Determination ofSoftening Point of Bitumen (Ring andBall)
BS 3900 Part A6 Paints and varnishes. Determination ofFlow Time by Use of Flow Cups
BS 3900 Part F4 Methods of Tests for Paints; Resistanceto Continuous Salt Spray
BS 4147 Bitumen-Based Hot-Applied CoatingMaterials for Protecting Iron AndSteel, Including Suitable PrimersWhere Required
BS 4164 Coal-Tar-Based Hot-Applied CoatingMaterials for Protecting Iron AndSteel, Including a Suitable Primer
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BS 6374 Lining of Equipment with PolymericMaterials for the Process IndustriesPart 5. Specification of Lining withRubber
2.4 CSA (Canadian Standards Association)CAN/CSA-Z245.20/21
External Fusion Bond Epoxy Coatingfor Steel Pipe-External PolyethyleneCoating for Pipe
2.5 DIN (Deutsche Industrie Normen)DIN 30670 Polyethylene Coatings for Steel Pipes
and Fittings
DIN 30671 Umhüllung (Aussenbeschichtigung)von erdverlagten Stahlrohren mitDuroplasten
DIN 30678 Polypropylene for Steel Pipes
DIN 12111 Testing of Glass; Determination ofWater Resistance (Grain TitrationMethod) and Classification of Glass inHydrolytic Classes
DIN 53516 Prüfung von Kautschuk undElastomeren. Bestimmung des Abriebs.
2.6 DNV (Det Norske Veritas)DNV OS−F101 Submarine Pipeline Systems
2.7 EN (European Standards)EN 10204 Metallic Products – Types of
Inspection Documents
prEN 10285
(draft standard)
Steel Tubes and Fittings for Onshoreand Offshore Pipelines – ExternalThree Layer Extruded PolyethyleneBased Coatings
prEN 10286
(draft standard)
Steel Tubes and Fittings for Onshoreand Offshore Pipelines – ExternalThree Layer Extruded PolypropyleneBased Coatings
2.8 GBE (Gas Business Engineering/British Gas)GBE/CW6 Technical Specification for the
External Protection of Steel Linepipeand Fittings Using Fusion BondedPowder and Associated CoatingSystems
2.9 ISO (International Organization forStandardization)
ISO 34 Rubber, Vulcanised or Thermoplastic.Determination of Tear Strength
ISO 37 Rubber, Vulcanised or Thermoplastic –Determination of Tensile Stress- StrainProperties
ISO 188 Rubber, Vulcanised or Thermoplastic –Accelerated Ageing and Heat-Resistance Tests
ISO 306 Plastics-Thermoplastic Materials –Determining of Vicat SofteningTemperature
ISO 527 Plastics – Determination of TensileProperties. Part 1 and 2.
ISO 815 Rubber, Vulcanised or ThermoplasticDetermination of Compression Set atAmbient, Elevated or LowTemperatures
ISO 845 Cellular Plastics and Rubbers –Determination of Apparent (Bulk)Density
ISO 868 Plastics and Ebonite – Determinationof Indentation Hardness by Means of aDurometer (Shore Hardness)
ISO 1133 Plastics – Determination of the MeltMass-Flow Rate (MFR) and the MeltVolume- Flow-Rate (MVR) ofThermoplastics
ISO 1183 Plastics – Methods for Determining theDensity and Relative Density of Non-Cellular Plastics
ISO 1515 Paints and Varnishes – Determinationof Volatile and Non-Volatile Matter
ISO 2409 Paints and Varnishes – Cross-Cut Test
ISO 2431 Paints and Varnishes – Determinationof Flow Time by Use of Flow Cups
ISO 2655 Plastics – Resins in the Liquid State oras Emulsions or Dispersions –Determining of Apparent Viscosity bythe Brookfield Test
ISO 2808 Paints and Varnishes – Determinationof Film Thickness
ISO 2811 Paints and Varnishes – Determinationof Density
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ISO 2815 Paint and Varnishes – BuchholzIndentation Test
ISO 4287-1 Surface Roughness – Terminology –Part 1: Surface and Its Parameters
ISO 4624 Paints and Varnishes – Pull-Off Testfor Adhesion
ISO 4892-2 Plastics – Methods of Exposure toLaboratory; Light Sources
ISO 7253 Paints and Varnishes-Determination ofResistance to Neutral Salt Spray
ISO 8501-1 Preparation of Steel Substrate forApplication of Paint and RelatedProducts-Visual Assessment of SurfaceCleanliness.Part 1: Rust Grades and PreparationGrades of Uncoated Steel Substrates.
ISO 8502-3 Preparation of Steel Substrates BeforeApplication of Paints and RelatedProducts-Test for the Assessment ofSurface Cleanliness– Part 3: Assessment of Dust on SteelSurfaces Prepared for Painting(Pressure Sensitive Tape Method)
ISO 8502-6 –Part 6: Sampling of SolubleImpurities on Surfaces to be Painted – the Bresle Method.
ISO 8503-2 Preparation of Steel Substrates BeforeApplication of Paints and RelatedProducts- Surface RoughnessCharacteristics of Blast CleanedSubstrates– Part 2: Method for the Grading ofSurface Profile of Abrasive Blast-Cleaned Steel – Comparator Procedure
ISO 8503-4 – Part 4: Method for the Calibration ofISO Surface Profile Comparators andfor the Determination of SurfaceProfile – Stylus Instrument Procedure
ISO 10005 Quality Management- Guidelines forQuality Plans
ISO 10474 Steel and Steel Products– Inspection Documents
2.10 NACE (National Association of CorrosionEngineers)
NACE RP0274 High Voltage Electrical Inspection ofPipeline Coatings Prior to Installation
2.11 NF (Normes Francaise)NF A 49-710 External 3- Layer Polyethylene Based
Coating. Application by Extrusion
NF A 49-711 External 3- Layer Polypropylene BasedCoating. Application by Extrusion
3. Definitions and Verbal Forms
Purchaser party issuing contract for coating work,or nominated representative
Contractor party to whom the coating work has beencontracted
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 betweenPurchaser and Contractor (e.g. as stated in a contract)
Report and Notify refers to an action by Contractor inwriting
Accepted/Acceptance refers to a confirmation by Purchaserin writing
Certified refers to confirmation of specified properties issuedby Contractor or manufacturer of coating materialsaccording to EN 10204:3.1.B, ISO 10474:5.1.B or equivalent
Purchase Document(s) refers to an inquiry/tender orpurchase/contract specification, as relevant
4. Abbrevations
FBE Fusion Bonded Epoxy
ITP Inspection and Testing Plan (see 5.3.1)
LE Liquid Epoxy
MPS (Coating) Manufacturing ProcedureSpecification (see 5.1)
PE Polyethylene (polyethene)
PP Polypropylene (polypropene)
PQT (Coating) Pre-Production QualificationTesting (see 5.2)
QPS (Coating) Qualification ProcedureSpecification (see 5.2.2)
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5. General Requrements
5.1 Coating Manufacturing Procedure5.1.1 All work associated with coating manufacturing shallbe described in procedures which shall be compiled in aCoating Manufacturing Procedure Specification (MPS). Thisdocument shall be submitted to Purchaser prior to start ofcoating work, and shall include:
− coating materials (incl. manufacturer’s product datasheets)
− surface preparation (general information; for specificrequirements, see 5.3)
− coating application (incl. control of essential processparameters)
− inspection and testing (general information; for specificrequirements, 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 acceptanceby Purchaser. Some detailed requirements to items forinclusion in the coating manufacturing specification aregiven in 5.4 –5.10.
5.2 Pre-Production Qualification Testing (PQT)5.2.1 Coating materials (i.e. manufacturer’s specification)and coating manufacturing procedures (including repairs)shall be qualified prior to, or (if agreed) during the plantstart-up phase. Purchaser may choose to accept results from aprevious qualification using identical coating materials andprocess parameters, and similar pipe dimensions. However,significant changes of process parameters, coating materialspecification or pipe dimension require re-qualification.Specific requirements to pre-production qualification testing,including e.g. number of pipes to be coated and schedule forreporting, shall be specified in purchase documents (see1.3.2).
5.2.2 If a project specific qualification is to be carried out, aCoating Qualification Procedure Specification (QPS) and aschedule for application, inspection/testing and reportingshall be submitted to Purchaser for acceptance in due timeprior to start-up of the qualification activities.
5.2.3 Coating application temperature, and drying or curingconditions, shall be according to coating materialmanufacturer’s recommendations.
5.2.4 Purchaser shall have the right to select or acceptpipe(s) for inspection and testing. Unless otherwise agreed,test methods and acceptance criteria shall be in accordancewith the applicable Pipeline Coating Data Sheet in theANNEX of this document. Testing of properties included inthe Pipeline Coating Data Sheet and with a frequency/extent
of testing noted as “by agreement” (see 5.7.2) shall bespecified in purchase documents.
5.2.5 Qualification of coating repairs shall as a minimuminclude testing for holidays and adhesion.
5.2.6 Results from all inspection, testing and calibrationsduring qualification, essential operational parameters forcoating, and coating material certificates shall be compiled ina PQT report. If stated in purchase documents, the reportshall be accepted by Purchaser prior to start of production.
5.3 Quality Control5.3.1 Prior to start-up of production, Contractor shallsubmit to Purchaser for acceptance:
- MPS updated to reflect the process parameters used duringthe PQT (if different from those specified in the MPSsubmitted to Contractor prior to PQT)- a project specific Inspection and Testing Plan (ITP)meeting the general requirements of ISO 10005, Section5.10. The plan shall describe all quality control activitieswith reference to the inspection, testing and calibrationprocedures that shall apply for the specific project- a daily log format (see 5.7.5).
5.3.2 Unless otherwise agreed (see 1.3.2), methods andfrequency of inspection and testing, as well as acceptancecriteria shall be in accordance with the applicable PipelineCoating Data Sheet in the ANNEX of this document.
5.3.3 The MPS, ITP, and daily log shall be in English,unless otherwise agreed.
5.3.4 Procedures and work instructions referenced in theITP, and applicable acceptance criteria, shall be available toall persons concerned with the associated work.
5.3.5 Purchaser shall have the right to inspect all activitiesassociated with coating manufacturing, including surfacepreparation and inspection/testing of coated pipes. Purchasershall identify any hold points for witnessing (see 5.7.1) in theITP and inform Contractor accordingly.
5.4 Coating Materials5.4.1 Contractor shall verify that all coating materials andabrasives received are in accordance with the specifiedrequirements in the purchase order/product data sheet. Theverification may include actual testing by Contractor himself(or by a third party), and/or review of manufacturer’scertificates. Any verification testing to be performed byContractor shall be included in the ITP.
5.4.2 Testing of coating material properties may relate toproperties of raw materials (i.e. “as delivered”), or toproperties of processed materials (i.e. “as-applied”). In thelatter case, test panels with applied coating, or speciallyprepared coating layers (i.e. without substrate) are used.
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5.4.3 Coating material properties related to raw materials asdelivered for coating shall be certified (see 3) per batch/lot,in accordance with the relevant Pipeline Coating Data Sheetin the ANNEX. (In the case of continuous production,“batches” will not apply and a “lot” shall be defined based one.g. hours or weight/volume of production). For certain as-applied properties of the coating, and in particular thoserelated to resistance to long-term environmental degradation,data for a representative product specification (i.e. notbatch/lot specific) will normally apply. Purchaser mayrequire witnessing or third party testing of as-applied coatingmaterial properties in order to qualify a specific coatingproduct, or to verify properties of individual batches/lots ofcoating material. (To be specified in purchase documents ifapplicable).
5.4.4 Until compliance with specified requirements hasbeen confirmed, the coating materials received by Contractorshall be kept physically separated from checked materials.Any materials checked and found non-conforming shall beclearly marked and quarantined.
5.4.5 All materials to be used for surface preparation andcoating of pipes shall be contained in their original packinguntil 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)
5.4.6 Contractor shall ensure that all materials for coatingand surface preparation are stored and handled so as to avoiddamage by climatic or other effects. Manufacturer’srecommendations for storage and use shall be readilyavailable for Purchaser’s review.
5.4.7 Recycled coating materials may be used if detailed inthe MPS, stating e.g. requirements to cleaning and maximumaddition to virgin coating material. It shall further bedemonstrated that such use does not affect the specifiedproperties.
5.5 Initial (Receipt) Inspection of Pipes and SurfacePreparation
5.5.1 All surface preparation and associated inspection andmonitoring activities shall be carried out according to thequalified MPS (5.1) and ITP (5.3.1). Methods, acceptancecriteria and frequency/extent of inspection and testing shallcomply with requirements given in the Pipeline Coating DataSheets in the ANNEX, and/or amendments in purchasedocuments (see 1.3.2) if applicable.
5.5.2 Linepipe may be delivered to Contractor with orwithout a temporary external corrosion protection (e.g.varnish type). On receipt, every pipe shall be identified by aunique number and any additional marking to maintainidentity shall be performed as specified or accepted by
Purchaser (5.9.1). Intermediate storage of pipes shall beaccording to 5.10.
5.5.3 Each pipe shall be subject to an initial visualexamination. Particular emphasis shall be laid onexamination of pipe ends. Pipes with severe damage such asdents, ovality, cuts and other defects that cannot be correctedby surface dressing shall be removed and Purchaser notifiedaccordingly. Any requirements to checking of pipedimensions and/or weight shall be specified in purchasedocuments.
5.5.4 Salts, soils and other loose contamination shall beremoved from the pipe surface using a suitable water-basedcleaning method (e.g. high-pressure fresh water or brushing).Organic contaminants like oil and grease shall be removedby using suitable solvents or detergents. Purchaser shall benotified promptly if the surface condition of the receivedpipes is deemed to affect the quality of the coating.
5.5.5 Pipe surfaces shall be prepared for coating using blastcleaning to provide a surface cleanliness and surfaceroughness (anchor pattern) as specified in the applicablePipeline Coating Data Sheet of the ANNEX. Relevantproperties of blasting materials shall be documented. Theblasting material and pressurised air system shall be kept dryand free from injurious contaminants, including salts, oil andgrease. Recycled blasting material shall be checked forcleanliness at regular intervals (to be specified in the ITP).Checking of oil contamination shall be carried out accordingto ASTM D4285.
5.5.6 For stainless steel pipes, abrasives shall be based onfused aluminium oxide or stainless steel shot according to anappropriate standard. Precautions shall be taken to avoidcontamination by e.g. residual C-steel particles.
5.5.7 Special protection of machined bevels and/or internalsurfaces, e.g. by use of end caps during cleaning, may apply.(To be specified in purchase documents).
5.5.8 During blast cleaning, the pipe surface shall be atleast 3 oC above the dew point temperature and the ambientrelative humidity should not exceed 85%. Pre-heating ofpipes is required if humidity is higher.
5.5.9 After the blast cleaning, the pipes shall be thoroughlychecked. Marking of defects (if applicable) shall be carriedout using “French Chalk” only. Any slivers, swabs, burns,laminations or gouges shall be removed by cosmeticgrinding. (Requirements to more excessive grinding shall bespecified in purchase documents). The remaining wallthickness shall comply with the applicable linepipespecification. (Checking of remaining wall thickness byultrasonic testing shall be according to ASTM E797 orequivalent). Pipes with any dressed area larger than 10 cm2
shall be completely re-blasted. Unrepairable pipes shall bequarantined and Purchaser notified accordingly.
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5.5.10 Dust or abrasive remains shall be removed from thepipe surface using dry clean air, vacuum cleaning orbrushing. Surface cleanliness and roughness shall be verifiedas detailed in the applicable Pipeline Coating Data Sheet inthe ANNEX. Measurements of residual salt contaminationmay be performed using special proprietary equipment ifspecified in the inspection and testing plan, and provided thatcompliance with the referenced standard can bedemonstrated. Pipes not meeting specified requirements shallbe subject to new blast cleaning or rejection.
5.5.11 Special precautions shall be taken to avoid rustingand/or contamination after completed surface preparation.Requirements to maximum duration (in hours) betweenblasting and coating, and/or maximum relative humidityshall be specified in the MPS.
5.5.12 Mechanical surface preparation may be followed by achemical treatment if stated in the MPS.
5.6 Coating Application5.6.1 All coating work shall be carried out according to thequalified MPS (see 5.1).
5.6.2 Throughout coating application, essential parametersaffecting the quality of the coating (e.g. applicationtemperature of linepipe and coating materials, relativehumidity, etc) shall be monitored on-line and recordingsnoted in the daily log (5.7.5). For certain coating systems, theapplication temperature shall be continuously monitored asspecified in the applicable Pipeline Coating Data Sheet in theANNEX.Equipment for monitoring shall be calibrated atscheduled intervals as specified in the ITP (5.3.1).
5.6.3 Coated pipes shall be traceable to individualbatches/lots of coating materials.
5.6.4 Coating thickness (nominal and minimum values ofindividual layers, maximum if applicable) shall be defined inpurchase documents (i.e. unless thickness is stated in thePipeline Coating Data Sheet).
5.6.5 The length and surface condition of pipe ends to beleft uncoated (or “cut-back” if applicable), and anychamfering of edges, shall be detailed in purchasedocuments. Any use of temporary coatings or tapes to maskcoating application at pipe ends shall be described in theMPS.
5.6.6 Any remainders of coating or blasting materials onthe internal pipe surface shall be removed. Specialrequirements to cleanliness of internal surfaces, if applicable,shall be specified in purchase documents.
5.7 Inspection and Testing of Coated Pipes5.7.1 Coated pipes shall be inspected and tested accordingto the ITP (5.3.1). Purchaser shall be allowed to witness allinspection and testing. For special hold points identified byPurchaser (see5.3.5), Contractor shall give adequate noticefor Contractor to arrange for witnessing.
5.7.2 Inspection and testing of coated pipes duringqualification and production shall be carried out according tothe applicable methods, acceptance criteria and frequenciesspecified in the applicable Pipeline Coating Data Sheet andany amendments made in purchase documents (see 1.3.2).The following notes apply to all Pipeline Coating DataSheets:
“According to ITP” means that testing method and/oracceptance criteria (as applicable) shall be defined in the ITP
“to be included” under “Frequency/Qualification” means thattesting shall be included during qualification.
“to be agreed” means that testing shall be carried out, andthat test method and/or acceptance criteria (as applicable) aresubject to agreement (preferably to be specified in purchasedocuments).
“by agreement” means that Purchaser may require testing,and that methods and acceptance criteria are subject toagreement (to be specified in purchase documents).
5.7.3 Failures during testing which are obviously due todefective sampling or operational errors of testing equipmentmay be disregarded and testing repeated on the same pipe.
5.7.4 Individual pipes not meeting specified criteria shallbe re-coated, or if possible (see 5.8), repaired. In case offailure of a pipe coating during fractional testing (e.g. each20th pipe or twice per shift), the preceding and followingpipes shall be tested individually until at least 3 successivepipes show adequate properties. In the case of repeatedfailures to meet specified acceptance criteria, Purchaser mayrequire testing frequency to be increased. Similarly, subjectto acceptance by Purchaser, testing frequency may bereduced as a result of successful testing demonstratingadequate quality.
5.7.5 All data from inspection and testing of coated pipes,major coating repairs, essential operating parameters (e.g.application temperature, pipe feed rate, etc.) and calibrationof testing and monitoring equipment, shall be noted in a dailylog. For pipe specific data, reference shall be made to theunique pipe number (5.5.2). The log shall be up-dated on adaily basis and is to be available for Purchaser’s review atany time during manufacturing.
5.8 Repairs5.8.1 Maximum permissible repairs (e.g. maximum surfacearea of individual repair, maximum repairs per pipe andmaximum number of pipes with repairs) and requirements todocumentation of repairs shall be specified in purchasedocuments (1.3.2).
Recommended Practice No. RP-F106 11
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DET NORSKE VERITAS
5.8.2 Stripping of unrepairable coating for re-coating shallbe carried out according to a procedure accepted byPurchaser. Coating repairs shall be carried out and inspectedaccording to a qualified procedure (5.1).
5.9 Documentation and Marking5.9.1 Specific requirements to pipe tracking (e.g. electronicformat), marking and documentation format shall bespecified in purchase documents (1.3.2).
5.9.2 Results from inspection and testing duringqualification and production shall be documented and betraceable to a unique pipe number and individual coatingmaterial batches/lots. For specific requirements to a dailylog, see 5.7.5.
5.9.3 Documentation, including coating materialcertificates, shall be retained by Contractor for minimum 5years, or as agreed upon.
5.9.4 Contractor shall issue an inspection documentcorresponding to the requirements given in EN 10204,inspection certificate 3.1.B or ISO 10474, inspectioncertificate 5.1.B.
5.10 Handling and Storage of Pipes5.10.1 Pipes shall be handled and stored such that damage tocoated and uncoated surfaces is avoided. The applicableprocedure is subject to acceptance by Purchaser. Stainlesssteel pipes require special considerations to avoid surfacecontamination (e.g. from use of C-steel tools). Purchaser mayrequire documentation (e.g. by calculations) that a specifiedmaximum stack height cannot cause any damage.
5.10.2 Damage to coatings during handling or storage shallbe repaired according to 5.8, whilst any damage to linepipematerial shall be reported to Purchaser. (Damaged pipes shallbe separated and quarantined).
5.10.3 Any packaging or other means of protection of coatedpipes for shipping shall be defined in purchase documents(1.3.2).
12 Recommended Practice No. RP-F106
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Recommended Practice No. RP-F106 13
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
ANNEX
Coating Data Sheet No.1: 3-Layer Polyethylene or Polypropylene Coating (3 pages)
Coating ConfigurationEpoxy primer FBE: min. 100-250 µm, max. 550µm (to be agreed for inclusion in ITP)
LE: min. 30-50 µm ( to be agreed for inclusion in ITP)Polymeric adhesive According to ITPPolyethylene or polypropylene outer sheath According to ITPTotal thickness min. 2.0 mm (to be agreed for inclusion in ITP)
Coating Materials
Item/Property Test method Acceptance criteria Frequency
Epoxy primer material
Density (FBE/LE) ISO 2811 According to product data sheet Every batch/lotParticle size (FBE) According to product data sheet According to product data sheet Every batch/lotMax. moisture content (FBE) According to product data sheet According to product data sheet Every batch/lotGel time (FBE) According to product data sheet According to product data sheet Every batch/lotGlass transition temperature(FBE)
NF A 49-710/711(prEN 10285/10286) orGBE/CW6 part 1, App. A
According to product data sheet(min. 5 oC above pipeline max.operating temperature)
Every batch/lot
Viscosity of base and hardener(LE)
ISO 2655 According to product data sheet Every batch/lot
Volume solids of the base andhardener (LE)
ISO 1515 According to product data sheet Every batch/lot
Infrared scan by agreement by agreement by agreementWater resistance ASTM D870,
3000 hrs at 85 oC orNo blistering,swelling < 5 %Loss of hardness <10 %
by agreement
GBE/CW6 part 1, App. A According to standard
Salt spray test ISO 7253, 4000 hrs orBS 3900, Part F4 No rusting, no blistering by agreement
Cathodic disbonding ASTM G8 orGBE/CW6, part 1, App. E orNF A 49-710/711(prEN 10285/10286)or other agreed procedure
by agreement by agreement
Adhesive material
Density ISO 1183 According to product data sheet Every batch/lotParticle size (for spraying) According to product data sheet According to product data sheet Every batch/lotMelt flow index/rate ISO 1133 or ASTM D1238 According to product data sheet Every batch/lotSoftening 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/lotMelt flow index/rate ISO 1133 or
ASTM D1238According to product data sheet Every batch/lot
Softening point (Vicat) ISO 306 or ASTM D1525 According to product data sheet Every batch/lotThermostabilisation ASTM D3895 by agreement by agreementUV resistance ISO 4892-2 or DIN 30670 or
NF A 49-710/711(prEN 10285/10286)
by agreement (ISO) oraccording to standard (NF/EN) by agreement
Abrasion resistance ASTM D4060 orDIN 53516 by agreement by agreement
Fungi resistance ASTM G21 no growth by agreement
14 Recommended Practice No. RP-F106
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NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
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 by agreementWater absorption BS 903, A16 by agreement by agreementThermal conductivity ASTM C518 by agreement by agreementThermal stability/ageing DIN 30670 or
NF A 49-710/711(prEN 10285/10286)
According to standard orby agreement by agreement
Linear expansion ASTM D696 by agreement by agreementModulus of elasticity ASTM D638
5 mm/minby agreement by agreement
Surface Preparation
FrequencyItem/Property Test method Acceptance criteria
PQT Production
Initial surfacecondition
Visual examination Dry and free from contamination (oil,grease, etc.) and surface defects
to be included Every pipe
Pipe temperature andrelative humidity
According to ITP Pipe temperature min.3 oC above dew point
to be included Minimum once per hour
Salt contaminnationafter blast cleaning
ISO 8502-6 oragreed method
max. 20 mg NaCl/m2 to be included First 5, then 1/30both pipe ends
Surface cleanliness ISO 8501-1 A/B ≥ Sa 2 ½. to be included Every pipeSurface cleanliness ISO 8502-2 Rating max. 2 to be included First 5, then 1/30
both pipe endsSurface roughness ISO 8503-4 RY5 min. 40 µm; max 100 µm to be included First 5, then 1/30
both pipe endsFinal surfacecondition
Visual examination Free from surface defects to be included Every pipe
Pipe temperature priorto chemical treatment(if specified in MPS)
According to ITP According to ITP to be included Continuous monitoring
Coating Pre-Production Qualification Testing (PQT) and Production Control
FrequencyItem/Property: Test method Acceptance criteria
PQT Production
Epoxy layer
Pipe temperature According to ITP According to ITP to be included Continuous monitoringThickness ISO 2808
or by agreementAccording to ITP to be included First pipe and start/lead
pipe 1), then one pipeevery shift(to be performed byallowing application tolimited area of maskedpipe end)
Degree of cure FBE: differentialthermal analysisaccording toNF A 49-710/711(prEN 10285/10286)or by agreementLE: According to ITP
FBE: ∆TG = max 2 oC
LE: According to ITP
to be included First pipe, start/leadpipe1) then one pipeevery shift. (to beperformed by allowingapplication to limitedarea of masked pipeend)
Hardness ISO 2815 by agreement by agreement by agreementAdhesion ISO 2409 or
ISO 4624 orDIN 30671or by agreement
Classification: 0 (ISO 2409)min. 34 MPa (ISO 4624)No detachment (DIN 30671)
by agreement by agreement
Porosity CAN/CSA-Z245.20 by agreement by agreement by agreement
Recommended Practice No. RP-F106 15
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.1: 3-Layer Polyethylene or Polypropylene Coating (3 pages)
1) “start/lead pipe” refers to first pipe after interupted coating
FrequencyItem/Property: Test method Acceptance criteria
PQT Production
Adhesive Layer
Thickness According to ITP According to ITP to be included by agreement
Full layer
Coating materialand pipetemperatures
According to ITP According to ITP to be included Continuous monitoring
Pipe feed rate According to ITP According to ITP to be included Continuous monitoring
Appearance ofcoating
Visual According to ITP to be included,100% surface area
Every pipe,100% surface area
Pipe endconfiguration
According to ITP According to ITP to be included Every pipe,both pipe ends
Holiday detection NACE RP0274,10 kV/mm nominalthickness, max 25 kV,200-300 mm/s orNF A 49-710/711(prEN 10285/10286)
no holidays to be included,100% surface area
Every pipe,100% surface area(visual/accoustic alarmfunction)
Thickness NF A 49-710/711(prEN 10285/10286)or agreed procedure
According to purchase order and ITP to be included Every pipeor by agreement
Adhesion(peel strength)
NF A 49-710/711(prEN 10285/10286)or DIN 30670/30678
min. 150 N/cm, 20 oCTesting at higher temperature byagreement
to be included First pipe and start/leadpipe 1),then one per shift,both pipe ends
Impactresistance
NF A 49-710/711(prEN 10285/10286)or DIN 30670/30678
according to standard to be included First pipe and start/leadpipe 1),or by agreement
Indentationresistance
NF A 49-710/711(prEN 10285/10286)or DIN 30670/30678
max 0.10 mm, 20 oCTesting at higher temperature byagreement
to be included First pipe for eachPE/PP batch
Elongation at break ASTM D638 or ISO 527 orNF A 49-710/711(prEN 10285/10286)
PE: min. 400%, 20 oCPP: min. 300%, 20 oCTesting at higher/lower temperature byagreement
to be included First pipe for eachPE/PP batch
Tensile strength ASTM D638 or ISO 527 orNF A 49-710/711(prEN 10285/10286)
by agreement to be included First pipe for eachPE/PP batch
Hardness ASTM D785 orISO 868
by agreement by agreement by agreement
Bending resistance(flexibility)
by agreement by agreement by agreement not applicable
Electrical insulationcapacity
NF A 49 –710/711(prEN 10285/10286)
by agreement by agreement not applicable
Cathodicdisbonding
ASTM G8 orGBE/CW6 orNF A 49 –710/711(prEN 10285/10286or other agreedprocedure
by agreement by agreement not applicable
Shear strength ASTM D1002 by agreement by agreement not applicable
Heat resistance(by melt flow index)
NF A 49 –710/711(prEN 10285/10286
by agreement by agreement by agreement
Residual magnetism by agreement by agreement by agreement by agreement
16 Recommended Practice No. RP-F106
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.1: 3-Layer Polyethylene or Polypropylene Coating (3 pages)
1) “start/lead pipe” refers to first pipe after interupted coating
Recommended Practice No. RP-F106 17
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.2: Multi-Layer Polyethylene or Polypropylene Coating(1 page)
Coating Configuration (typical)Epoxy primer FBE: min. 100-300 µm, max. 500 µm (to be agreed for inclusion in ITP)
LE: min. 30-50 µm, (to be agreed for inclusion in ITP)Polymeric adhesive According to ITPPolyethylene or polypropylene intermediate sheath According to ITPPolyethylene or polypropylene foam or syntactic layer To be agreed for inclusion in ITPPolyethylene or polypropylene outer sheath According to ITPTotal thickness To be agreed for inclusion in ITPCoating Materials
Item/Property Test method Acceptance criteria Frequency
Epoxy primer material
as for 3-layer coatings as for 3-layer coatings as for 3-layer coatingsAdhesive material
as for 3-layer coatings as for 3-layer coatings as for 3-layer coatingsPolyethylene or Polypropylene Foam Material
Density According to product data sheet According to product data sheet Every batch or deliveryMelt index ISO 1133 According to product data sheet Every batch or deliverySoftening point ISO 306 According to product data sheet Every batch or deliveryElongation ISO 527 According to product data sheet Every batch or deliveryPolyethylene or Polypropylene Sheathing Material
as for 3-layer coatings as for 3-layer coatings as for 3-layer coatings
Surface Preparation
Properties Test method Acceptance criteria Frequency
As for 3-layer coatings
Coating Pre-Production Qualification Testing (PQT) and Production Control
FrequencyItem/Property Test method Acceptance criteria
PQT Production
Epoxy layer
As for 3-layer coatings
Adhesive layer
As for 3-layer coatings
Foam layer
Density ISO 845 to be agreed to be included First day 1/10 then 1/50Compressive strength ASTM D695 to be agreed to be included to be agreedTensile strength ASTM D638 According to ITP to be included not applicableFull layer
As for 3-layer coatings
18 Recommended Practice No. RP-F106
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.3: Single or Dual Layer Fusion Bonded Epoxy Coating(2 pages)
Coating ConfigurationEpoxy layer FBE: min. 500 µm (to be agreed)
Coating MaterialsItem/Property Test method Acceptance criteria Frequency
Epoxy material
Density ISO 2811 According to product data sheet Every batch/lotParticle size According to product data sheet According to product data sheet Every batch/lotMax. moisture content According to product data sheet According to product data sheet Every batch/lotGel time According to product data sheet According to product data sheet Every batch/lotGlass transition temperature GBE/CW6 part 1, App. A According to product data sheet
(min. 5 oC above pipeline max.operating temperature)
Every batch/lot
Infrared scan by agreement by agreement by agreement
Water resistance ASTM D870,3000 hrs at 85 oC or
GBE/CW6 part 1, App. E
No blistering,swelling < 5 %Loss of hardness <10 %
According to standard
by agreement
Impact resistance GBE/CW6 part 1, App. D by agreement by agreement
Salt spray test ISO 7253, 4000 hrs orBS 3900, Part F4
No rusting, no blistering by agreement
Cathodic disbonding ASTM G8 orGBE/CW6, part 1, App. E or or other agreed procedure
by agreement by agreement
Surface Preparation
FrequencyItem/Property Test method Acceptance criteria
PQT Production
Initial surfacecondition
Visual examination Dry and free fromcontamination (oil, grease,etc.) and surface defects
to be included Every pipe
Pipe temperature andrelative humidity
According to ITP Pipe temperature min.3 oC above dew point
to be included Minimum once per hour
Salt contaminationafter blast cleaning
ISO 8502-6 oragreed method
max. 20 mg NaCl/m2 to be included First 5, then 1/30both pipe ends
Surface cleanliness ISO 8501-1 A/B ≥ Sa 2 ½. to be included Every pipe
Surface cleanliness ISO 8502-2 Rating max. 2 to be included First 5, then 1/30both pipe ends
Surface roughness ISO 8503-4 RY5 min. 40 µm; max 100 µm
to be included First 5, then 1/30both pipe ends
Final surface condition Visual examination Free from surface defects to be included Every pipe
Pipe temperature priorto chemical treatment(if specified in MPS)
According to ITP According to ITP to be included Continuous monitoring
Recommended Practice No. RP-F106 19
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.3: Single or Dual Layer Fusion Bonded Epoxy Coating(2 pages)
Coating Pre-Production Qualification Testing (PQT) and Production Control
FrequencyItem/Property Test method Acceptance criteria
PQT Production
Pipe temperature According to ITP According to ITP to be included Continuous monitoring
Thickness to be agreed to be included
Coating material andpipe temperatures
According to ITP According to ITP to be included Continuous monitoring
Pipe feed rate According to ITP According to ITP to be included Continuous monitoring
Appearance of coating Visual According to ITP to be included,100% surface area
Every pipe,100% surface area
Pipe end configuration According to ITP According to ITP to be included Every pipe,both pipe ends
Holiday detection GBE/CW6 part 1, App. Eor by agreement
no holidays to be included,100% surface area
Every pipe,100% surface area(visual/accoustic alarmfunction)
Thickness ISO 2808or by agreement
According to ITP to be included First pipe and start/lead pipe1), then one pipe every shift4 recordings (90 o) at bothpipe ends and mid section
Degree of cure FBE: differential thermalanalysis according toGBE/CW6or by agreement
FBE: ∆TG = max 2 oC to be included First pipe, start/lead pipe1)
then one pipe every shift(to be performed byallowing application tolimited area of masked pipeend)
Adhesion ISO 2409 orISO 4624 orDIN 30671or by agreement
Classification: 0 (ISO2409)min. 34 MPa (ISO 4624)no detachment (DIN30671)
to be included By agreement(to be performed byallowing application tolimited area of masked pipeend, if applicable)
Impact resistance GBE/CW6 part 1, App. D to be agreed to be included not applicable
Hardness ISO 2815 by agreement by agreement by agreement
Porosity CAN/CSA-Z245.20 by agreement by agreement by agreement
Cathodic disbonding ASTM G8 orGBE/CW6, part 1, App. Eor or other agreed procedure
by agreement by agreement by agreement
Residual magnetism by agreement by agreement by agreement by agreement
1) “start/lead pipe” refers to first pipe after interrupted coating
20 Recommended Practice No. RP-F106
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.4: Asphalt Enamel (or “Bitumen”) Coating (2 pages)
Coating ConfigurationPrimer Dry Film Thickness: min. 15 µm (20 ±5 µm)
Type: BS 4147, Type BAsphalt Enamel Thickness: 4-6 mm
Type: BS 4147, Type 2 Grade bInner wrapping Thickness: min. 0.3 mm
Type: Non woven fibre tissue consisting of uniformly porous mat of glass;Outer wrapping Thickness: min. 0.6 mm
Type: Glass fibre, e.g. regular weaving of continuous glass filaments in the wrap and of glassfilament or of single or double staple glass fibres in the wool, with small amounts of binder
Coating Materials
Item/Property Test method Acceptance criteria Frequency
Primer material
Volatile matter BS 4147Appendix A According to BS 4147 Table 3 Every batch/lotViscosity BS 3900 Part A6 or ISO 2431 According to BS 4147 Table 3 Every batch/lotFiller materialFiller fineness BS 410 > 99 % passing 250 µm sieve
> 90 % passing 250 µm sieveEvery batch/lot
Asphalt enamel material
Filler content BS 4147 Appendix B According to BS 4147 Table 6 Every batch/lotDensity BS 4147 Appendix C According to BS 4147 Table 6 Every batch/lotSoftening point BS 2000, Part 49 According to BS 4147 Table 6 Every batch/lotPenetration BS 4147 Appendix D According to BS 4147 Table 6 Every batch/lot, twice per shiftSag test BS 4147 Appendix E According to BS 4147 Table 7 First batch/lot, then every 10th
Impact test BS 4147 Appendix G According to BS 4147 Table 7 First batch/lot, then every 10th
Bend test BS 4147 Appendix F According to BS 4147 Table 7 First batch/lot, then every 10th
Peel test BS 4147 Appendix H According to BS4 147 Table 7 First batch/lot, then every 10th
Inner wrapping material
Hydrolytic class DIN 12111 or equivalent min. Class 3 Every batch/lotWeight According to ITP min. 42 g/m2 Every batch/lotBinder content According to ITP 10-18% of total weight Every batch/lotThickness According to ITP min. 0.3 mm Every batch/lotTensile strength According to ITP Longitudinal: min. 100 N / 5 cm
stripLateral: min 25 N / 5 cm strip
Every batch/lot
Outer wrapping material
Hydrolytic class Same as for inner wrapping Every batch/lotWeight According to ITP min. 460 g/m2 Every batch/lotGlass content According to ITP min. 170 g/m² Every batch/lotThickness According to ITP min. 0.6 mm Every batch/lotTensile strength According to ITP Longitudinal and lateral:
min 800 N/ 5 cm stripEvery batch/lot
Recommended Practice No. RP-F106 21
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.4: Asphalt Enamel (or “Bitumen”) Coating (2 pages)
Surface Preparation
FrequencyProperties Test method Acceptance criteria
PQT Production
Initial surface condition Visual examination Free from surfacecontamination,temporary corrosionprotection and defects
to be included Every pipe,100% surface area
Pipe temperature andrelative humidity
According to ITP Pipe temperature min.3 oC above dew point
to be included Minimum once per hour
Salt contamination afterblast cleaning
ISO 8502-6 max. 30 mg NaCl/m2 to be included One per shift, both ends
Surface cleanliness ISO 8501-1 A/B ≥ Sa 2 ½. to be included Every pipe100% surface area
Roughness ISO 8503-2 Grade Medium G to be included One per shift, both endsFinal surface condition Visual examination Free from surface
defectsto be included Every pipe
100% surface area
Coating Pre-Production Qualification Testing (PQT) and Production Control
FrequencyItem/Property Test method Acceptance criteria
PQT Production
Primer layer
Application temperature According to ITP According to ITP to be included Every pipeCoating layer thickness According to ITP According to ITP to be included First 10 pipes then every 10th
pipe, 3x4 locations (90 o apart)Full layer
Time duration frompriming
According to ITP to be included Every pipe
Enamel temperature According to ITP According to ITP to be included Continuous monitoring
Pipe temperature According to ITP According to ITP to be included Every pipe
Wrap and enamelconfiguration
According to ITP According to ITP to be included According to ITP
Appearance of finished coating
Visual According to ITP to be included Every pipe,100% surface area
Total thickness According to ITP 5.0 mm minimum9.0 mm maximum
to be included First 10 pipes then every 10th
pipe,3x4 locations (90 o apart)
Holiday detection NACE RP0274min 15 kVRate: 150-250 mm/s
No defects acceptable to be included Every pipe,100% surface area
Adhesion(Tapping/sounding test)
Tapping by woodenstick(According to ITP)
According to ITP to be included First 10 pipes then every 10th
pipe, “100%” surface area.
Adhesion(Peeling test)
Cutting by knifethrough coating (e.g.30x100 mm strip) andpeeling by force(According to ITP)
Coating shall bedifficult to remove,causing cohesive failureof the coating.
to be included First 5 pipes (one pipe end),then first pipe per shift
Compactness test Examination of stripremoved from coatingfor homogenity andthickness of individuallayers (acc. to ITP)
According to ITP to be included First 5 pipes (one pipe end),then first pipe per shift
Pipe end configuration According to ITP According to ITP to be included Every pipe, both pipe ends
22 Recommended Practice No. RP-F106
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.5: Coal Tar Enamel Coating (2 pages)
Coating ConfigurationPrimer Dry Film Thickness: min. 15 µm (20 ±5 µm)
Type: BS 4164, grade BCoal Tar Enamel Thickness: 4-6 mm
Type: BS 4164, grade 120/5Inner wrapping Thickness: min. 0.3 mm
Type: 1 wrap of glass mat, non-woven glass fibreOuter wrapping Thickness: min. 0.6 mm (when impregnated)
Type: 1 wrap of saturated woven glass fibre
Coating Materials
Item/Property Test method Acceptance criteria Frequency
Primer material
Viscosity BS 3900 Part A6 orISO 2431
According to BS 4164 Table 1 Every batch/lot
Flash point BS 3442 According to BS 4164 Table 1 Every batch/lotVolatile matter BS 4164 Appendix A According to BS 4164 Table 1 Every batch/lotFiller material
Filler fineness BS 410 > 99 % passing 250 µm sieve> 90 % passing 250 µm sieve
Every batch/lot
Coal tar enamel material
Filler content BS 4164 Appendix B According to BS 4164 Table 2 Every batch/lot, once per shiftDensity BS 4164 Appendix C According to BS 4164 Table 2 Every batch/lot, once per shiftSoftening point BS 4164 Appendix D According to BS 4164 Table 2 Every batch/lot, once per shiftPenetration BS 4164 Appendix E According to BS 4164 Table 2 Every batch/lot, once per shiftViscosity BS 4164 Appendix F According to BS 4164 Table 2 Every batch/lot, once per shiftSag test According to BS 4164,
Appendix GAccording to BS 4164 Table 3 First batch/lot, then every 10th
Impact test According to BS 4164,Appendix K
According to BS 4164 Table 3 First batch/lot, then every 10th
Bend test According to BS 4164,Appendix J
According to BS 4164 Table 3 First batch/lot, then every 10th
Low temperature test forcracking and disbonding
According to BS 4164,Appendix H
According to BS 4164 Table 3 First batch/lot, then every 10th
Peel test According to BS 4164,Appendix L
According to BS 4164 Table 3 First batch/lot, then every 10th
Cathodic disbonding test According to BS 4164,Appendix M
According to BS 4164 Table 3 by agrement
Inner wrapping material
Hydrolytic Class DIN 12.111 or equivalent Class 3 or better Every batch/lotWeight According to ITP min. 42 g/m2 Every batch/lotBinder content According to ITP 10-18% Every batch/lotThickness According to ITP According to ITP Every batch/lotTensile strength According to ITP min. 306 N/150 mm wide strip
measured in the longitudinal directionEvery batch/lot
Outer wrapping material
Hydrolytic class DIN 12.111 or equivalent Class 3 or better Every batch/lotWeight According to ITP min. 460 g/m2 Every batch/lotBinder content According to ITP According to ITP Every batch/lotTensile strength According to ITP min. 535 N/150 mm wide strip Every batch/lot
Recommended Practice No. RP-F106 23
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.5: Coal Tar Enamel Coating (2 pages)
Surface preparationFrequency
Item/Property Test method Acceptance criteriaPQT Production
Initial surface condition Visual examination Free from surfacecontamination, temporarycorrosion protection anddefects
to be included Every pipe100% surface area
Pipe temperature andrelative humidity
According to ITP Pipe temperature min.3 oC above dew point
to be included Minimum once perhour
Salt contamination afterblast cleaning
ISO 8502-6 max. 30 mg NaCl/m2 to be included One per shift, bothends
Surface cleanliness ISO 8501-1 A/B ≥ Sa 2 ½. to be included Every pipe100% surface area
Roughness ISO 8503-2 Grade Medium G to be included One per shift, bothends
Final surface condition Visual examination Free from surface defects to be included Every pipe100% surface area
Coating Pre-Production Qualification Testing (PQT) and Production ControlFrequency
Item/Property Test method Acceptance criteriaPQT Production
Primer layerApplication temperature According to ITP According to ITP to be included Every pipeCoating layer thickness According to ITP According to ITP to be included 10 first pipe, then every
10th pipe,3x4 locations (90 o apart)
Full layerTime duration frompriming
According to ITP to be included Every pipe
Enamel temperature According to ITP According to ITP to be included Continuous monitoring
Pipe temperature According to ITP According to ITP to be included Every pipe
Wrap and enamelconfiguration
According to ITP According to ITP to be included According to ITP
Appearance offinished coating
Visual According to ITP to be included Every pipe,100% surface area
Total thickness According to ITP 5.0 mm minimum9.0 mm maximum
to be included First 10 pipes then every10th pipe,3x4 locations (90 o apart)
Holiday detection NACE RP0274min 15 kVRate: 150-250 mm/s
No defects acceptable to be included Every pipe,100% surface area
Adhesion(Tapping/sounding test)
Tapping by woodenstick(According to ITP)
According to ITP to be included First 10 pipes then every10th pipe, “100%” surfacearea.
Adhesion(Peeling test)
Cutting by knifethrough coating (e.g.30x100 mm strip) andpeeling by force(according to ITP)
Coating shall be difficult toremove, causing cohesivefailure of the coating. Cleanpeeling from primer or thepipe surface is not acceptable
to be included First 5 pipes (one pipeend), then first per shift
Compactness test Examination of stripremoved from coatingfor homogenity andthickness of individuallayers (acc. to ITP)
According to ITP to be included First 5 pipes (one pipeend), then first per shift
24 Recommended Practice No. RP-F106
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.6: Polychloroprene (or “Vulcanised Rubber”) Coating(2 pages)
Coating ConfigurationPrimer Type and thickness according to ITPPolychloreprene Thickness to be agreed
Coating Materials
Item/Property Test method Acceptance criteria Frequency
Primer material
According to ITP According to ITP According to ITP Every batch/lot
Polychloroprene material
Rheometer curve According to ITP According to ITP Every batch/lotHardness ASTM D2240 56-68 Shore A Every batch/lotDensity BS 903 Part A1 1450-1650 kg/m3 Every batch/lotTensile strength ISO 37 min. 15 MPa Every batch/lotElongation ISO 37 min.. 350% Every batch/lotCompression set ISO 815 max.. 20% at 60 oC Every batch/lotOzone resistance ASTM D1149 by agreement by agreementSeawater absorption BS 903 Part A16 by agreement by agreementAbrasion resistance DIN 53516 by agreement by agreementTear strength ISO 34 min. 30N/mm by agreementThermal conductivity by agreement by agreement by agreementAccelerated ageing ISO 188 by agreement by agreementPenetration ASTM G17 by agreement by agreement
Surface preparation
FrequencyProperties Test method Acceptance criteria
PQT Production
Initial surface condition VisualExamination
Free from surfacecontamination,temporary corrosionprotection and defects
to be included Every pipe,100% surface area
Pipe temperature and relativehumidity
According to ITP Pipe temperature min.3 oC above dew point
to be included Minimum once per hour
Salt contamination after blastcleaning
ISO 8502-6 max. 20 mg NaCl/m2 to be included One per shift
Surface cleanliness ISO 8501-1 A/B ≥ Sa 2 ½. to be included Every pipe
Roughness ISO 8503-2 Grade Medium G to be included One per shiftFinal surface condition Visual examination Free from surface
defectsto be included Every pipe
100% surface area
Recommended Practice No. RP-F106 25
March 2000
NOTE: “ACCORDING TO ITP”, “ TO BE INCLUDED”, “ TO BE AGREED” AND “BY AGREEMENT” ARE EXPLAINED IN 5.7.2
DET NORSKE VERITAS
Coating Data Sheet No.6: Polychloroprene (or “Vulcanised Rubber”) Coating(2 pages)
Coating Pre-Production Qualification Testing (PQT) and Production Control
FrequencyItem/Property Test method Acceptance criteria
PQT Production
Polychloroprene layerVulcanising temperature andpressure
According to ITP According to ITP to be included Every pipe
Appearance Visual According to ITP to be included Every pipe,100% surface area
Coating layer thickness According to ITP According to ITP to be included Every pipe,3x4 locations (90 o apart)
Holiday detection BS 6374 According to ITP to be included Every pipe,100% surface area
Adhesion BS 6374 According to ITP to be included Every pipe (at cutback)Hardness ASTM D2240 According to ITP to be included Every pipePipe end configuration According to ITP According to ITP to be included Every pipe,
both pipe endsBending resistance by agreement by agreement by agreement not applicableCathodic disbonding by agreement by agreement by agreement not applicable