BS EN 14141 2003 Valves for natural gas transporta

BRITISHSTANDARDBSEN14141:2003Valvesfornaturalgastransportationinpipelines—PerformancerequirementsandtestsTheEuropeanStandardEN14141:2003hasthestatusofaBritishStandardICS23.060.01;75.200

 
 BSEN14141:2003ThisBritishStandard,waspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon19December2003©BSI19December2003ISBN058043141XNationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN14141:2003.TheUKparticipationinitspreparationwasentrustedbyTechnicalCommitteePSE/7,Industrialvalves,toSubcommitteePSE/7/8,Valvesforthegasindustry,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthissubcommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to44,aninsidebackcoverandabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateCommentsEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN14141December2003ICS23.060.01;75.200EnglishversionValvesfornaturalgastransportationinpipelines-PerformancerequirementsandtestsRobinetteriepourletransportdegaznaturelpardespipelines-ExigencesdeperformanceetessaisArmaturenfürdenTransportvonErdgasinFernleitungen-AnforderungenandieGebrauchstauglichkeitundderenPrüfungThisEuropeanStandardwasapprovedbyCENon14November2003.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:ruedeStassart,36B-1050Brussels©2003CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN14141:2003EEN14141:2003(E)2ContentspageForeword.............................................................................................................................................................5Introduction........................................................................................................................................................61Scope.....................................................................................................................................................72Normativereferences...........................................................................................................................73Termsanddefinitions...........................................................................................................................94Functionalrequirements....................................................................................................................104.1Travelstops.........................................................................................................................................104.2Positionoftheobturator....................................................................................................................104.3Protectionofexposedstemsandshafts..........................................................................................104.4Piggability............................................................................................................................................104.5Liftinglugs...........................................................................................................................................104.6Additionalrequirements.....................................................................................................................105Requirementsa