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BRITISH STANDARDBS EN 14141:2003Valves for natural gas transportation in pipelines Performance requirements and testsThe European Standard EN 14141:2003 has the status of a British StandardICS 23.060.01;75.200?BS EN 14141:2003This British Standard,was published under the authority of the Standards Policy and Strategy Committee on 19 December 2003 BSI 19 December 2003ISBN 0 580 43141 XNational forewordThis British Standard is the official English language version of EN 14141:2003.The UK participation in its preparation was entrusted by Technical Committee PSE/7,Industrial valves,to Subcommittee PSE/7/8,Valves for the gas industry,which has the responsibility to:A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled“International Standards Correspondence Index”,or by using the“Search”facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract.Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.aid enquirers to understand the text;present to the responsible international/European committee any enquiries on the interpretation,or proposals for change,and keep the UK interests informed;monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover,an inside front cover,the EN title page,pages 2 to 44,an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd.No.DateCommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14141December 2003ICS 23.060.01;75.200English versionValves for natural gas transportation in pipelines-Performancerequirements and testsRobinetterie pour le transport de gaz naturel par despipelines-Exigences de performance et essaisArmaturen fr den Transport von Erdgas in Fernleitungen-Anforderungen an die Gebrauchstauglichkeit und derenPrfungThis European Standard was approved by CEN on 14 November 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions(English,French,German).A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre:rue de Stassart,36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref.No.EN 14141:2003 EEN 14141:2003(E)2ContentspageForeword.5Introduction.61Scope.72Normative references.73Terms and definitions.94Functional requirements.104.1Travel stops.104.2Position of the obturator.104.3Protection of exposed stems and shafts.104.4Piggability.104.5Lifting lugs.104.6Additional requirements.105Requirements and tests.115.1Design.115.1.1Shell.115.1.2End-to-end dimensions.115.1.3Butt welding ends.115.1.4Anti-blow-out feature.125.1.5Sealant injection systems.125.1.6Extended drain,vent and sealant lines.135.1.7Vent,drain and sealant valves.135.1.8Mechanical resistance against excessive actuating forces.145.1.9Body/bonnet connection.145.2Operation.155.2.1Handwheels and levers,ease of operation.155.2.2Protection against rapidly moving external components.155.2.3Manual override devices.155.2.4Torque/thrust testing.165.3Materials.165.3.1Material compatibility.165.3.2Shell materials.175.3.3Obturator.185.3.4Body/bonnet connection,bolting materials.195.4Repair.205.5Non-destructive testing.205.5.1Qualification of testing personnel.205.5.2Welding.215.5.3Castings.225.5.4Forgings.225.5.5Welding ends for on-site welding.225.6Shell test.235.7External tightness.235.7.1Stem/shaft sealing.235.7.2External pressure relief.235.7.3Fire test(optional if requested).235.8Internal tightness.24w w w.b z f x w.c o mEN 14141:2003(E)35.8.1Seat tightness.245.8.2Functional test on clean service(optional).245.8.3Abrasion resistance test on dirty service(optional).246Certification.257Quality.258Type tests.259Functional and other qualification tests.25Annex A(normative)Type test on general design and production of pipeline valves.27A.1General.27A.2Purpose.27A.3Type test qualification limits.27A.3.1Size range.27A.3.2Design.28A.3.3Material.28A.3.4Type of manufacture.28A.4Type test.28A.4.1Prerequisites for manufacturing.28A.4.2Stress evaluation and safety design check.28A.4.3Test on valves.29A.4.4Documentation.29A.5Check on the production and testing by the independent accepted body.29A.6Modification of valves with type mark.29A.6.1Revisions to this standard.29A.6.2Notification of modifications.30A.7Procedure.30A.7.1Application for type test.30A.7.2Test report.30A.7.3Type mark.30A.8Notification of valves with type mark.31A.8.1Approvals.31A.8.2Expiry.31A.8.3Specimen of declaration of obligation.32Annex B(normative)Functional test on behaviour of valve sealing materials towards liquids innatural gas.33B.1Purpose.33B.2Performance of test.33B.3Acceptance criteria.33Annex C(normative)Strength test on torque/thrust.34C.1Purpose.34C.2Performance of test.34Acceptance criteria.34Annex D(normative)Functional test on clean gas(on option).35D.1Purpose.35D.2Performance of test.35D.3Acceptance criteria.35Annex E(normative)Functional test for abrasion resistance to dirty service of ball valves(onoption).36E.1Purpose.36E.2Performance of test.36E.3Acceptance criteria.37Annex F(normative)Wall thickness measurement.38F.1Purpose.38F.2Description of test.38F.3Test method.38w w w.b z f x w.c o mEN 14141:2003(E)4F.4Acceptance criteria.38Annex G(informative)Additional requirements.39G.1Bending strength.39G.2Protection against excessive torques.39Annex H(informative)Summary of tests on product and type tests.40Bibliography.44w w w.b z f x w.c o mEN 14141:2003(E)5ForewordThis document(EN 14141:2003)has been prepared by Technical Committee CEN/TC 69“Industrial valves”,the secretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard,either by publication of an identicaltext or by endorsement,at the latest by June 2004,and conflicting national standards shall be withdrawn atthe latest by June 2004.Annexes A,B,C,D,E and F are normative.Annexes G and H are informative.This document contains a Bibliography.According to the CEN/CENELEC Internal Regulations,the national standards organizations of the followingcountries are bound to:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerland and the United Kingdom.w w w.b z f x w.c o mEN 14141:2003(E)6IntroductionCEN/TC 69/WG 9 is charged to develop a proposal for a European performance standard of valves for use inpipelines for transportation of natural gas in accordance with EN 1594.The significant properties of valves designed for a special application are defined by performancerequirements accompanied by the description of tests to be carried out:by the manufacturer on the product during the manufacture;and by an independent accepted body on test samples for certification purposes;to give proof that the valve meets the performance requirements of this European Standard.A type test is included in this standard to satisfy the requirements of EN 1594.w w w.b z f x w.c o mEN 14141:2003(E)71 ScopeThis European Standard applies to all valves(plug valves,ball valves,gate valves and check valves)used inonshore transmission pipelines for transport of natural gas in accordance with EN 1594.It comprises allvalves which are components of the pipeline.This European Standard specifies valves for pipelines with a maximum operating pressure(MOP)over 16 bar.Excluded from the scope are control valves,safety valves and all valves DN 50.This European Standard specifies requirements and appropriate verification tests carried out duringproduction and for certification purposes to verify that the valves conform to the requirements.A summary ofthe product and type tests is given in annex H.This European Standard makes reference to ISO 14313.All the requirements of ISO 14313 should be metunless otherwise stated.Paragraphs marked with a dot indicate requirements which are identical toISO 14313.In the case of conflict between European and International Standard,the European Standardtakes precedence.Additional national requirements and tests in accordance with individual national legal regulations not yetharmonized may be necessary and are to be advised in the purchase order.2 Normative referencesThis European Standard incorporates by dated or undated reference,provisions from other publications.These normative references are cited at the appropriate places in the text and the publications are listedhereafter.For dated references,subsequent amendments to or revisions of any of these publications apply tothis European Standard only when incorporated in it by amendment or revision.For undated references thelatest edition of the publication referred to applies(including amendments).EN 473,Non-destructive testing Qualification and certification of NDT personnel General principles.EN 571-1,Non-destructive testing Penetrant testing Part 1:General principles.EN 736-1,Valves Terminology Part 1:Definition of types of valves.EN 736-2,Valves Terminology Part 2:Definition of components of valves.EN 736-3,Valves Terminology Part 3:Definition of terms.EN 970,Non-destructive examination of fusion welds Visual examination.EN 1289,Non-destructive examination of welds Penetrant testing of welds Acceptance levels.EN 1290,Non-destructive examination of welds Magnetic particle examination of welds.EN 1291,Non-destructive examination of welds Magnetic particle testing of welds Acceptance levels.EN 1369,Founding Magnetic particle inspection.EN 1371-1,Founding Liquid penetrant inspection Part 1:Sand,gravity die and low pressure diecastings.EN 1435,Non-destructive examination of welds Radiographic examination of welded joints.w w w.b z f x w.c o mEN 14141:2003(E)8EN 1503-1,Valves Materials for bodies,bonnets and covers Part 1:Steels specified in EuropeanStandards.EN 1503-2,Valves Materials for bodies,bonnets and covers Part 2:Steels other than those specified inEuropean Standards.EN 1515-1,Flanges and their joints Bolting Part 1:Selection of bolting.EN 1515-2,Flanges and their joints Bolting Part 2:Classification of bolt materials for steel flanges,PN-designated.EN 1594,Gas supply systems Pipelines for maximum operating pressure over 16 bar Functionalrequirements.EN 1712,Non-destructive testing of welds Ultrasonic testing of welded joints Acceptance levels.EN 1714,Non-destructive examination of welds Ultrasonic examination of welded joints.EN 10045-1,Metallic materials Charpy impact test Part 1:Test method.EN 10204:1991,Metallic products Types of inspection documents.EN 10228-1,Non-destructive testing of steel forgings Part 1:Magnetic particle inspection.EN 10228-2,Non-destructive testing of steel forgings Part 2:Penetrant testing.EN 10228-3,Non-destructive testing of steel forgings Part 3:Ultrasonic testing of ferritic or martensitic steelforgings.EN 10228-4,Non-destructive testing of steel forgings Part 4:Ultrasonic testing of austenitic and austenitic-ferritic stainless steel forgings.EN 12266-1,Industrial valves Testing of valves Part 1:Pressure tests,test procedures and acceptancecriteria Mandatory requirements.EN 12517,Non-destructive examination of welds Radiographic examination of welded joints Acceptancelevels.EN 12627:1999,Industrial valves Butt welding ends for steel valves.EN 12681,Founding Radiographic inspection.EN 45004,General criteria for the operation of various types of bodies performing inspection.EN 45011,General requirements for bodies operating product certification systems(ISO/IEC Guide 65:1996).prEN 12516-1,Industrial valves Shell design strength Part 1:Tabulation method for steel valve shells.prEN 12516-2,Industrial valves Shell design strength Part 2:Calculation method for steel valve shells.ISO 5208,Industrial valves Pressure testing of valves.ISO 10497,Testing of valves Fire type-testing requirements.ISO 14313:1999,Petroleum and natural gas industries Pipeline transportation systems Pipeline valves.w w w.b z f x w.c o mEN 14141:2003(E)9MSS-SP-551),Quality standard for steel castings for valves,flanges and fittings and other piping components(visual method for evaluation of surface irregularities).3 Terms and definitionsFor the purposes of this European Standard,the terms and definitions given in EN 736-1,EN 736-2,EN 736-3and ISO 14313 and the following apply.3.1full opening valve valve with an unobstructed opening capable of allowing a sphere or other internal devices of the samenominal size as the valve to pass3.2maximum pressure differential(MPD)maximum difference between the upstream and downstream pressure across the obturator at which theobturator may be operated3.3reduced-opening valve valve with the opening through the obturator smaller than at the end connection(s)3.4seating surfaces contact surfaces of the obturator and seat which ensure valve sealing3.5stem part that connects the obturator to the operator and which may consist of one or more componentsNOTEThis definition applies also for shafts.3.6test reportwritten statement comprising the results of the particular tests for the evaluation of the conformity of a range ofvalves with this standard3.7type testas generally mentioned in EN 736-3,a specified group of tests to provide proof of the conformity of a range ofvalves with this standardNOTEA range may include valves of the same design,the same material group and the same manufacturingmethod but with different size designations and different allowable pressures.3.8type test certificationgranting of a certificate by an independent accepted body to prove the conformity of a range of valves with astandard 1)Developed and approved by the Manufacturers Standardization Society of the Valve and Fittings Industrie,Inc.127Park Street,NE,Vienna,