DNVGL-SE-0499 Certification of pipeline components

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SERVICE SPECIFICATION

DNVGL-SE-0499 Edition March 2017Amended December 2017

Certification of pipeline components

FOREWORD

DNV GL service specifications contain procedural requirements for obtaining and retainingcertificates and other conformity statements to the objects, personnel, organisations and/oroperations in question.

© DNV GL AS March 2017

Any comments may be sent by e-mail to [email protected]

This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of thisdocument. The use of this document by others than DNV GL is at the user's sole risk. DNV GL does not accept any liability or responsibilityfor loss or damages resulting from any use of this document.

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Service specification — DNVGL-SE-0499. Edition March 2017, amended December 2017 Certification of pipeline components

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CHANGES – CURRENT

This document supersedes the March 2017 edition of DNVGL-SE-0499.Changes in this document are highlighted in red colour. However, if the changes involve a whole chapter,section or sub-section, normally only the title will be in red colour.

Amendments December 2017

• Sec.2 Certification process— Figure 2-1: Figure has been amended.

Editorial correctionsIn addition to the above stated changes, editorial corrections may have been made.

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CONTENTS

Changes – current.................................................................................................. 3

Section 1 Introduction............................................................................................ 51.1 General............................................................................................. 51.2 References........................................................................................ 71.3 Definitions.........................................................................................8

Section 2 Certification process..............................................................................122.1 General........................................................................................... 122.2 Design verification..........................................................................132.3 Fabrication follow-up......................................................................15

Section 3 Verification scope of work.....................................................................173.1 General........................................................................................... 173.2 Scope tables................................................................................... 19

Section 4 Documentation requirements................................................................ 214.1 General........................................................................................... 214.2 Design.............................................................................................214.3 Fabrication...................................................................................... 23

Changes - historic.................................................................................................25


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SECTION 1 INTRODUCTION

1.1 General

1.1.1 Introduction

1.1.1.1 This DNV GL service specification describes the DNV GL certification service for components to beused in submarine pipeline systems, including pipeline repair components (hereafter referred to as pipelinecomponents).

Guidance note:A submarine pipeline system extends to the first weld beyond:

— the first valve, flange or connection above water on platform or floater

— the connection point to the subsea production system (i.e. piping manifolds are not included)

— the first valve, flange, connection or insulation joint at a landfall unless otherwise specified by the on-shore legislation.

(See DNVGL-ST-F101)

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1.1.1.2 Certification of subsea components, apart from pipeline components covered by this document orDNVGL-SE-0475, is covered by the service specification DNVGL-SE-0045 and technical requirements given inDNVGL-ST-0035.

1.1.1.3 This document identifies and describes the verification activities required for certification of pipelinecomponents covering design, manufacturing and testing.

1.1.1.4 The application of this document is intended for certification of all pipeline components designed andmanufactured in accordance with DNV GL standard DNVGL-ST-F101 or recommended practice DNVGL-RP-F113.

1.1.1.5 The activities identified and described in this document are mandatory in order to obtain a DNV GLproduct certificate for the pipeline component.

1.1.1.6 Pipeline components with DNV GL product certificates according to this service specification arecompliant with DNV GL certified pipeline systems according to the DNVGL-SE-0475.

1.1.2 ObjectiveThe objectives of this document are to:

— describe DNV GL’s certification service for pipeline components— outline relevant DNV GL certification procedures— define the extent of verification activities required by DNV GL— provide a common communication platform between contracting parties— define the DNV GL deliverables.

1.1.3 Scope

1.1.3.1 The certification of pipeline components applies for pressure containing components. It covers thepertinent component isolated and does not include connecting pipeline sections, associated structures orsupports if not part of the component itself. The certification shall account for maximum forces that can betransferred to the component from the connecting pipeline sections under installation, testing and operation.


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1.1.3.2 Specific product certification requirements are given to the following pipeline components:

— Pipeline valves (typical component parts are body, bonnet, stem, ball/gate, seals, fasteners, e.g. body-bonnet connection, end connections towards pipeline).

— Pipeline flanges and clamp/hub connectors (typical component parts to consider are flange halves, swivelflanges, clamps and hubs, fasteners and seal).

— Pig traps (typical component parts to consider are main barrels, closure, seals, fasteners and branchedconnections/lines).

— Repair clamps and couplings (typical component parts to consider are clamp halves, coupling housing,fasteners, seals and pipeline gripping segments if relevant).

— Inline isolation plugs (typical component parts to consider are plug body, fasteners, seals and pipelinegripping segments).

— Hot tap tees (typical parts to consider are hot tap clamp/tee body, branch, fasteners, seals, hot tap valveand goose neck).

For other pipeline components typically covered by pipeline certification projects DNVGL-SE-0475 may beused as an alternative to this service specification.

Guidance note:Pipeline components typically designed and manufactured on a pipeline project specific basis are pipeline fittings, induction bends,CP isolation joints, anchor flanges, buckle arrestors and anodes.The product certification requirements given by this service specification is applicable to all pipeline components.


1.1.4 Certification service

1.1.4.1 Product certification is a conformity assessment requiring design, manufacturing and test verificationactivities to be performed. It provides documented evidence that the requirements laid down in DNVGL-ST-F101 are met during design and manufacturing of pipeline components.

1.1.4.2 The certification service specification defines the minimum level of DNV GL involvement to provide aDNV GL product certificate for pipeline components.

1.1.4.3 DNV GL certification services for pipeline components comprise of type approval certification andproduct certification.

1.1.4.4 Figure 1-1 illustrates how DNV GL certification services for pipeline components specified in thisservice specification relate to typical project phases and other DNV GL services.

Figure 1-1 Typical submarine pipeline project phases


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Guidance note:DNV GL verification services are offered for the different project phases up to the operational phase. Product certification appliesto design and manufacturing of a pipeline component. DNVGL-SE-0475Verification and certification of submarine pipelines systemscan be used for DNV GL certification covering other project phases such as e.g. installation and commissioning.


1.1.4.5 DNV GL certification of pipeline components is intended to complement, and not substitute,verification and certification of submarine pipeline systems as defined in DNVGL-SE-0475.

Guidance note:DNVGL-SE-0475 typically addresses complete submarine pipeline systems and not individual components isolated. The serviceoffered through DNVGL-SE-0475 is normally delivered to the operator/owner of the pipeline system.


1.1.5 Structure of document

1.1.5.1 This document consists of four sections.This section is a general introduction of the certification service, including definitions and references.Sec.2 explains the principles and process of certification, outlining the verification activities for each of theproject phases and the corresponding deliverables issued by DNV GL resulting from each of the completedprocess steps.Sec.3 lists verification scope for the pipeline components.Sec.4 lists documents requirement for the certification process.

1.2 ReferencesThe latest revision of the following documents applies unless otherwise specifically agreed with DNV GL.

Table 1-1 References

Document code Title

DNVGL-ST-F101 Submarine pipeline systems

DNVGL-SE-0475 Verification and certification of submarine pipelines

DNVGL-CP-0338 DNV GL type approval scheme

DNVGL-RP-F112 Design of duplex stainless steel – subsea equipment exposed to cathodic protection

DNVGL-RP-F113 Pipeline subsea repair

DNVGL-RP-F102 Pipeline field joint coating and field repair of linepipe coating

DNVGL-RP-F103 Cathodic protection of submarine pipelines

DNVGL-RP-B401 Cathodic protection design

DNVGL-SE-0045 Certification of subsea equipment and components

DNVGL-ST-0035 Subsea equipment and components

ISO 15156 Materials for use in H2S-containing environments in oil and gas production

ISO 23963-1 Non-metallic materials in contact with media related to oil and gas production,Part 1: Thermoplastics; Part 2: Elastomers; Part 3: Thermosets


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Document code Title

NORSOK M-710 Qualification of non-metallic sealing materials and manufactures

1.3 Definitions

1.3.1 TermsTable 1-2 Definitions of terms

Term Definition

audit(ISO 9001:2008)

systematic, independent and documented process for obtaining audit evidence andevaluating it objectively to determine the extent to which audit criteria are fulfilled

certification(ISO 17000:2004)

third-party issue of a statement, based on a decision following review, that fulfilment ofspecified requirements has been demonstrated related to products, processes or systems

Review shall in this context mean verification of the suitability, adequacy and effectivenessof selection and determination activities, and the results of these activities, with regard tofulfilment of specified requirements by an object of conformity assessment.

certification service a certification service may be regarded as a verification process which fulfils certain formalrequirements

The scope of work is normally standardized and shall be pre-defined in the form of apublicly available service description, either a DNV GL service specification or a nationallyor internationally recognized standard which stipulates certification requirements. The finaldeliverable DNV GL document shall be a certificate.

clamp(DNVGL-ST-F101)

circumferential structural element, split into two or more partsExamples; connecting two hubs in a mechanical connector or two pipe half-shells for repairpurpose.

component an assembly of sub-components e.g. valve, repair coupling, pig trap

conformity assessment the process used to show that a product, service or system meets specified requirements

coupling(DNVGL-ST-F101)

mechanical device to connect two bare pipes to create a structural joint resisting appliedloads and preventing leakage

critical parameter a parameter that can lead to an unacceptable level of failure, or risk, either alone or incombination with other parameters that have a similar level of risk or failure

customer DNV GL’s contractual partnerIn many projects the owner authorizes the contractor to act onhis behalf and it shall then mean the contractual partner

This party is then responsible for ensuring access to documentation and manufacturing/testing facilities. In many projects the owner authorizes the contractor to act on his behalfand it shall then mean the contractual partner. This party is then responsible for ensuringaccess to documentation and manufacturing/testing facilities.

design(DNVGL-ST-F101)

all related engineering to design the pipeline (component) including structural as well asmaterial and corrosion

design verification report a statement issued when the design verification activities have been completedAny open comments or nonconformities shall be clearly stated in the design verificationreport (DVR).


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Term Definition

fabrication(DNVGL-ST-F101)

activities related to the assembly of objects with a defined purpose in a pipeline system

fittings(DNVGL-ST-F101)

elbows, caps, tees, single or multiple extruded headers, reducers and transition sectionsNote that DNVGL-RP-F113 has a different definition of pipeline fittings: “…the term "fittings"is limited to: Couplings, Clamps, Hot-tap T branch connections and Isolation plugs intendedfor submarine pipelines.”

flange(DNVGL-ST-F101)

collar at the end of a pipe usually provided with holes in the pipe axial direction for bolts topermit other objects to be attached to it

hydrogen induced stresscracking (HISC)(DNVGL-ST-F101)

cracking that results from the presence of hydrogen in a metal while subjected to tensilestresses (residual and/or applied)

The source of hydrogen may be welding, corrosion, cathodic protection, electroplatingor other electrochemical process. Crack growth proceeds by a hydrogen embrittlementmechanism at the crack tip, i.e. the bulk material is not necessarily embrittled by hydrogen.HISC by corrosion in presence of hydrogen sulphide is referred to as sulphide stresscracking (SSC).

intermediatedocumentation

DNV GL may issue intermediate documentation of progress or conclusion related toindividual verification elements:

— a document review— a site visit— a test.

Intermediate deliverables may be in the form of:

— verification comments (may be listed in VerCom, letter, email or other agreedcommunication type)

— visit report— audit report— report for incomplete certification.

manufacturer(DNVGL-ST-F101)

the party who is contracted to be responsible for planning, execution and documentation ofmanufacturing

manufacture(DNVGL-ST-F101)

making of articles or materials, often in large volumes

In relation to pipelines, refers to activities for the production of line pipe, anodes andother components and application of coating, performed under contracts from one or morecontractors.

manufacturing procedurespecification(DNVGL-ST-F101)

a manual prepared by the manufacturer to demonstrate how the specified properties maybe achieved and verified through the proposed manufacturing route

product a product is a physical object that results from a manufacturing process, i.e. material,components and equipment

review systematic examination of reports and documentation

surveillance continuous or frequency based monitoring and/or witnessing of activities (e.g.manufacture) to confirm that specified requirements are being fulfilled


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Term Definition

sub-component a single item used in a component e.g.

— valve: body, bonnet, fasteners, stem, seals— repair coupling: pipeline gripping segments, housing, fasteners, seals— pig trap: main barrel, closure, small bore piping, saddle supports.

(DNV GL) type approval DNV GL type approval (TA) is approval of the design of a pipeline component type typicallycovering a range of similar design variants (material, dimensions etc.), operating conditionsand use

The design is verified against a DNV GL standard.

Requirements to be used as the basis for a DNV GL TA are found in the following standardswhich hereinafter are referred to as DNV GL standards:

— DNV GL service specifications, and/or— DNV GL standards, and/or— DNV GL recommended practices, and/or— DNV GL type approval programmes.

DNV GL type approval of pipeline components cover design only and not the manufacturingof the component.

(DNV GL) type examination DNV GL type examination (TE) is approval of the design of a pipeline component typetypically covering a range of similar design variants (material, dimensions etc.), operatingconditions and use

DNV GL TE can be based on other requirements than for TA such as:

— iInternational standards— national standards— industry standards

A DNV GL type examination cannot form the basis for a DNV GL product certificate.

validation testing test to confirm/validate design assumptions and analyses for strength and functionality,applicable for type approval and product certification projects

verification comments DNV GL comments given in the review to a document. E.g. design document,manufacturing procedure

verification(ISO 9000:2005)

confirmation, through the provision of objective evidence, that specified requirements havebeen fulfilled

witnessing witnessing (survey) or hold point indicates that DNV GL needs a formal notificationregarding activity start-up and DNV GL will evaluate if attendance is required or not

1.3.2 AbbreviationsTable 1-3 Abbreviations

Abbreviation Description

ASME American Society of Mechanical Engineers

CP cathodic protection

DNVGL-RP DNV GL recommended practise


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Abbreviation Description

DVR design verification report

FAT fabrication acceptance test

FEA finite element analysis

GA general arrangement

HIP hot isostatic pressing

HISC hydrogen induced stress cracking

ITP inspection and test plan

NDT non-destructive testing

MPQR manufacturing procedure qualification report

MPS manufacturing procedure specification

PC product certification

TA type approval

TAC type approval certificate

WPS welding procedure specification

WPQ welding procedure qualification report

WPQR welding procedure qualification report

1.3.3 SymbolsTable 1-4 Symbols

D diameter

t thickness

1.3.4 Verbal formsTable 1-5 Verbal forms

Term Definition

shall verbal form used to indicate requirements strictly to be followed in order to conform to the document

shouldverbal form used to indicate that among several possibilities one is recommended as particularly suitable,without mentioning or excluding others, or that a certain course of action is preferred but not necessarilyrequired

may verbal form used to indicate a course of action permissible within the limits of the document


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SECTION 2 CERTIFICATION PROCESS

2.1 GeneralThis section explains the principles and process of certification of pipeline components. Figure 2-1summarises the certification process.

Figure 2-1 Product certification process

The difference between a type approval certificate and a product certificate covered by this servicespecification:

— DNV GL type approval is a certification service that covers design only and the type approval certificatestates that the design of a product type is in conformity with specified requirements. The certificate isvalid for a specified period.

— A product certificate is issued for a manufactured product and is stating conformity with the specifiedrequirements (design and production) at the time of issue of the product certificate. The productcertificate is issued upon completion of the total verification scope and there shall be no unresolveddeviations, i.e.; no open verification comments.

The difference between a type approval and case-by-case design verification:

— DNV GL type approval is approval of the design of a pipeline component type, typically covering a range ofsimilar design variants (material, dimensions etc.), operating conditions and use.

— Design verification for case-by-case covers one specific design only.— The type approval may be re-used for production of several units. The alternative case-by-case design

verification can formally not be re-used.Guidance note:The design verification part of a product certification scheme may be based on either type approval or case-by-case designverification.



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2.2 Design verification

2.2.1 General

2.2.1.1 Design verification is the examination of the assumptions, methods and results of the design processand is performed to confirm that the design requirements to the pipeline component are fulfilled.

2.2.1.2 For design verification, the following procedure shall be followed:

— Document review shall be documented by DNV GL verification comments or other intermediatedeliverables.

— Witness of validation testing shall be documented by a survey report or other intermediate deliverables.— The completion of the design verification work will be documented by a design verification report for case-

by-case verification, or a type approval certificate (TAC) for a type approval assessment.Guidance note:Validation testing of pipeline components is the testing performed to validate assumptions made in the design. Examples of suchtesting are:

— testing of pipeline grip capacity for pipeline repair clamps and couplings

— testing of seal functionality and performance

— testing of external tensile-, compression-, bending moment- and radial compressive/tensile loads

— hydrostatic strength test

— fire testing of valves.


2.2.1.3 The scope for design verification shall as a minimum comprise:

— review of the design process— review of specifications for design, e.g. design basis, functional requirements— review of design reports and drawings— review of material selection (both metallic and non-metallic sub-components)— review of corrosion protection design— review of material specifications— review of validation test procedures— witness validation testing and review validation test reports.

Guidance note:Performing independent calculations and/or FEA are normally not required in DNV GL design verification. The need for independentcalculations/FEA should be evaluated on a project specific basis.


2.2.1.4 The design, calculations, reports and specifications shall meet the requirements in DNVGL-ST-F101.The following shall be considered for design of pipeline components:

— Material specification shall be prepared for all pressure-containing, pressure-retaining and load bearingsub-components, both metallic and non-metallic.

— Corrosion protection design shall be in accordance with DNVGL-RP-B401, and/or DNVGL-RP-F103,alternatively other documents that provide at least equal protection level.

— Anti-corrosion coating design shall comply with DNVGL-RP-F102, alternatively other documents thatprovide at least equal protection level.

— Material selection shall be in accordance with ISO 15156 for H2S containing environments. Materialssusceptible for HISC shall comply with DNVGL-RP-F112.


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2.2.2 Case-by-case

2.2.2.1 When the design verification is performed on a case-by-case basis, e.g. project specific, the fulldesign verification scope shall be done for each application/project.

2.2.2.2 Validation testing is the test activities needed to ensure that the pipeline components meet therequired strength and functionality requirements established in the design.Validation testing shall be performed according to DNV GL approved test procedures and be witnessed byDNV GL according to accepted test plan. The required testing shall meet the requirements in either DNVGL-ST-F101 or the relevant recommended practice, e.g. DNVGL-RP-F113.

2.2.2.3 A design verification report (DVR) will be issued to the customer on completion of the designverification activities. In conjunction with DNV GL certification the DVR shall be clean, i.e. no commentsexcept those which by nature can only be closed during survey of manufacture or integration. This wouldtypically be requirements to control measurement, testing etc.

Guidance note:Note that a design verification report will be issued whether the design is acceptable or not. DNV GL will not issue a productcertificate where the design is not accepted.


2.2.3 Type approvalThe DNV GL type approval process for the design verification of pipeline components may be used as analternative to the design verification case-by-case and shall be according to DNVGL-CP-0338DNV GL typeapproval scheme.

Guidance note:DNV GL will not issue a product certificate where the design is not accepted and the final deliverable will then be a designverification report.


For components lacking in-service track record or not covered by international recognised standards, thetype approval may be based on technology qualification according to DNVGL-RP-A203. In such cases,documentation from the qualification process shall be open and available to stakeholders and the period ofvalidity of the type approval certificate will be limited to 2 years.The scope of DNV GL type approval will normally include the following activities:

— survey (initial/renewal)— document review— witness validation (type) testing— issuance of a type approval certificate.

For pipeline components, type approval is normally offered when a range of sizes, pressure classes etc. of acomponent type are subjected to DNV GL design verification.Type testing is required for type approval and follows the objective outlined in [2.2.1.2]. The type testingshall be outlined in a type test programme as specified by DNVGL-CP-0338.The required testing shall be according to DNVGL-ST-F101 and the relevant recommended practices, or bythe relevant component specific type approval program, if any.A type approval certificate will be issued to the type approval applicant upon satisfactory completion of thevalidation testing.


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2.3 Fabrication follow-up

2.3.1 The objective of DNV GL’s involvement during fabrication shall ensure that the components and sub-components are manufactured according to the approved procedures and the agreed requirements.Fabrication follow-up involves document review of manufacturing procedures and attendance during themanufacturing process to ensure compliance with the DNV GL approved design.For fabrication follow-up, the following procedure shall be followed:

— Document review shall be documented by DNV GL verification comments or other intermediatedeliverables.

— Manufacturing survey shall be documented by site visit reports or other intermediate deliverables.— Completion of the fabrication follow-up shall be documented by issuance of a product certificate, if DNV

GL concludes that the product conforms to the specified requirements.

2.3.2 Fabrication follow-up of pipeline components comprises the following activities:

— review of the manufacturing processes— review of manufacturing procedures— review of procedure qualification processes— witnessing and monitoring procedure qualification processes— witnessing and monitoring during manufacture— witness fabrication acceptance testing— review of final documentation.

2.3.3 Fabrication follow-up is carried out by means of full time attendance, audits, inspections or spot checks of thework, as determined by DNV GL and included in an approved inspection and test plan, in sufficient detail toconfirm that the requirements to the pipeline component are fulfilled. This covers also manufacturing of sub-components, as determined by DNV GL.

2.3.4 DNV GL surveyor shall have safe access to the works at all reasonable times, insofar as the work affects thecertification process. The customer shall ensure, through contracts with the parties concerned or otherwise,that such access is granted, and that DNV GL is notified as to when and where the surveyor's attendance isrequired.

2.3.5 The objective of the surveys carried out by the DNV GL surveyor during the manufacture, shall verify anddocument that the produced component complies with the approved design documentation and agreedmanufacturing procedures.


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2.3.6 If the product for any reason has not been manufactured in accordance with the approved design and agreedmanufacturing process or if any repairs need to be done, DNV GL shall be notified and further actions shall beagreed upon.


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SECTION 3 VERIFICATION SCOPE OF WORK

3.1 GeneralDescription of scope of work elements for design verification and fabrication follow-up is given in Table 3-1and Table 3-2, respectively.The level of verification involvement shall reflect the risk associated with each element of the scope andpotential critical aspects/issues, typically depending on:

— degree of technical innovation— particular technical challenges (material, conditions etc.)— experience of the contractor in carrying out similar work— quality management system of the owner and his contractors.

3.1.1 Design verificationTable 3-1 Scope of work for design verification of pipeline components

1) Review of the design process by

a) review of design quality management documentationb) audit/attend owner’s audit of design quality management system

2) Review of specifications for design by

a) review of the design basisb) evaluation of the design criteria (e.g. functional requirements, safety requirements, other)

3) Review of design reports and drawings by

a) review of the component documentation to confirm that the main operating conditions have been accountedfor in design, that the governing conditions are identified, and that the chosen design philosophies are inaccordance with specified standards

b) evaluation of the main design and calculation methods used and spot checks of the input data and thecalculation results

c) review of main assembly drawings and sub-component drawingsd) review of failure mode assessment and qualification activities, if relevant

4) Review of material specifications and corrosion protection design

a) review of material selection for main components (pressure retaining- and load bearing components)b) review of material specifications, including requirements for welding and NDTc) review of corrosion protection design calculations and anti-corrosion coating design

5) Validation test; review requirements and procedures and witness validation testing (fabrication acceptance test maybe part of the validation testing)


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3.1.2 Fabrication follow-upTable 3-2 Scope of work for fabrication follow-up of pipeline components

1) Review of the manufacturers’ systems by

a) review of manufacturing management systemsb) audit of the manufacturing quality management system

2) Review of manufacturing procedures by

a) review manufacturing procedures for confirmation of compliance with the standards and specifications.Emphasis shall be on procedures and plans for;

— casting, forging, rolling and other key production processes— heat treatment process— welding activities— non-destructive testing, including visual control— mechanical testing, including sampling locations— dimensional control

b) review the inspection and test plan(s) (ITP)

c) review qualification records of pre-qualified manufacturing processes (e.g. welding procedure qualificationreports)

3) Surveillance during manufacture by (to be planned and agreed in one or several ITPs)

a) visit-based attendance during qualification of key manufacturing processes, e.g. welding procedures, if pre-qualified procedures are not used

b) visit-based attendance during manufacturing to confirm that the delivered component and sub-componentshave been produced in accordance with the approved design and agreed manufacturing procedures

c) visit-based attendance during testing, to confirm that the delivered component has been tested in accordancewith the agreed test procedures

d) review of manufacturing record book/final documentation to confirm that the agreed requirements have beenmet. Emphasis on:

— adherence to agreed manufacturing procedures— heat treatment records, including furnace loading sketch and temperature charts— mechanical test reports— NDT reports— dimensional control reports

Guidance note:For the activities detailed in 3a and 3b in table above, DNV GL may require full time attendance to be able to issue a productcertificate. This will be evaluated on a project specific basis.


3.1.2.1 Certification of pipeline components is based on compliance with all requirements stated in theagreed design; either in component specific documents or by reference to industry standards.

3.1.2.2 In order to ensure traceability between the component certified by DNV GL and the certificate issuedfor the component, all components shall be clearly marked for identification.


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3.2 Scope tablesDetailed scope tables are given in Table 3-3, Table 3-4 and Table 3-5.

Table 3-3 Scope of work – Initial activities 1)

DNV GL involvementActivity

Document review Survey

Review of quality management documentation X

Audit/attend owner’s audit of quality management system X

1) For well-established and recognized suppliers with a certified quality system this may be waived.

Table 3-4 Scope of work – Design verification


Document review Survey

Design basis X

Functional and safety requirements (barriers etc.) X

Structural design report X

Seal design envelope X

Material selection report X

Material specification(s) including welding and NDT X

GA drawing including part list and reference to materialspecification X

Corrosion protection design X

Requirements to fabrication acceptance test/function test X

Validation test procedures 1) X

Validation testing (functional testing, type tests etc.) 1) X

1) Review of validation procedures and witnessing validation testing is required for TA and DNV GL involvement shall beaccording the requirements in DNVGL-CP-0338.

Table 3-5 Scope of work – Fabrication follow-up of key components and sub-components


Procedure review Survey Record review

Manufacturing (steelmaking, casting, forging, rolling, HIP’ing,repair welding, assembly welding, clad welding)Both detailed procedure(s) and ITP(s)/quality plan(s)

X X X

Welding qualification, if not using pre-qualified procedure X X X

Heat treatment X X X


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Procedure review Survey Record review

NDT X X X

Mechanical testing including sampling X X X

Dimensional control and visual inspection X X X

Fabrication acceptance test X X X

Marking of components X

Manufacturing record book/final inspection X X


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SECTION 4 DOCUMENTATION REQUIREMENTS

4.1 GeneralDNVGL-ST-F101 lists the minimum requirements to documentation needed for design, manufacturing/fabrication, installation, operation and abandonment of a pipeline system. For pipeline components, thisdocument gives requirements to documentation that shall be submitted or otherwise be presented to DNV GLin the course of a certification process.The purpose of the documentation requirements shall ensure that a sufficient level of information is providedto verify that the requirements of the standard have been complied with during the design and manufactureof the pipeline components.Documentation media shall be clear, legible, reproducible and retrievable.

4.2 DesignDesign documentation requirements for specific components shall be according to, but not limited to, thatof the relevant design standard. Design documentation requirements will be provided upon request forcertification services. Table 4-1 gives an overview of the typical design documentation required.

Table 4-1 Design verification documentation

Documentation type Description

Design basis — data sheet for component— pipeline design basis (pressure, temperature, pipe dimensions, design life, content etc.)— design loads and acceptance criteria for component— interface towards pipeline system and external loads— code breaks (pressure vessel code, structural design code, pipeline code etc.).

Structural design report — calculations— FEA— functional performance requirements, e.g. sealing and gripping.

Seal design envelope Design report detailing application range for seal based on an acceptable qualificationprogram. For non-metallic materials, material properties shall be documented in accordancewith ISO 23963-1 or NORSOK M-710. Typical items to be documented:

— thermal expansion coefficient, bulk modulus and elasticity modulus— thermal effects on the mechanical properties.


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Material selection report A general description of the function and potential failure mechanisms related to materialselection and exposed environment. The following shall be included as a minimum:Corrosivity, considering specified operating conditions including start-up and shutdownconditions;

— design life and system availability requirements— identification of potential failure mechanism of considered material in exposed

environment, and evaluation of acceptable robustness for specified design life— resistance to brittle fracture and HISC— inspection and corrosion monitoring— access for maintenance and repair.

A table of the items in the component parts list, stating for each item:

— the materials selection (material, grade and surface treatment), including relevantrequirements/specifications/standards for material and fabrication.

— exposure (marine atmosphere, seawater with or without CP, bore fluid, sour servicerequirements, fully encased etc.)

— minimum design/maximum operating temperature (if assessed to be different than forthe general conditions)

— whether the integrity of the item is required for all or only parts of the design life— comment column addressing considerations made, etc.

Corrosion protection design Cathodic protection design report and anti-corrosion coating design report

Material specifications Material specification(s) for all sub-components including fasteners and anti-corrosioncoating.

Design drawings General arrangement drawing detailing component part list and reference to materialspecification for each part.Separate detailed drawings for each part within component assembly shall be part ofdrawing package reviewed by DNV GL.

Validation test procedures For pipeline repair components, the test program shall be according to DNVGL-RP-F113 anddetail the following:

— basic testing— qualification/type testing— FAT— final testing.

Test requirements for other pipeline components shall be compliant with DNVGL-ST-F101and the agreed design standard(s).

For type approval, test procedures shall also consider possible requirements in DNVGL-CP-0338.


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Test reports Documentations from testing shall include:

— pressure and temperature record charts— log of pressure and temperatures— pipeline material certificates, e.g. SMYS, SMTS, dimensions, surface condition and

surface hardness— calibration certificates for instruments and test equipment— validation of pipeline gripping/indentation including measurement of pipeline

deformations.— inspection of pipeline component (and pipeline when relevant)— fire test certificate where applicable (e.g. riser valves).

4.3 FabricationFabrication documentation shall include all relevant details and acceptance criteria relating to how thecomponent will be manufactured. This typically includes details of manufacturing, welding and inspectionprocesses.Fabrication records shall provide traceability to confirm that the delivered component or equipment has beenmanufactured in accordance with the approved design documentation.The fabrication records shall include a traceable record of non-conformities and agreed corrective actions.Fabrication documentation and record requirements for components to be certified shall be according to, butnot limited to, that of the relevant design standard. Fabrication documentation requirements will be providedupon request for certification services.Table 4-2 gives an overview of the typical fabrication documentation required.

Table 4-2 Fabrication follow-up documentation


MPS manufacturing procedure specifications (MPS) including test requirements andacceptance criteria

ITP/quality plan inspection and test plan which reflects the process of manufacturing and quality controlof the pipeline component (and sub-components):

— actions performed on each production/inspection step,— reference to procedures for inspection, testing and calibrations

WPS and WPQR welding procedure specifications (WPS), including procedures for repair weldingwelding procedure qualification records (WPQR)

NDT procedures non-destructive testing (NDT) procedures for agreed NDT methodspersonnel qualification records, e.g. for welders and NDT operators

Heat treatment procedures heat treatment procedures including allowable variation in process parameters

Specification for mechanicaltest sampling

drawing showing the sampling location for mechanical testing for each component


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Manufacturing record book/final inspection

material certificateswelding records

NDT records

marking/traceability list

dimensional inspection records

coating test reports

anode drawings

heat treatment records incl. furnace loading sketch

factory acceptance test results

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CHANGES - HISTORICThere are currently no historical changes for this document.

About DNV GLDriven by our purpose of safeguarding life, property and the environment, DNV GL enablesorganizations to advance the safety and sustainability of their business. We provide classification,technical assurance, software and independent expert advisory services to the maritime, oil & gasand energy industries. We also provide certification services to customers across a wide rangeof industries. Operating in more than 100 countries, our experts are dedicated to helping ourcustomers make the world safer, smarter and greener.

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DNVGL-SE-0499 Certification of pipeline components

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