BRITISHSTANDARDBSEN730-1:2002Gasweldingequipment—Safetydevices—Part1:Incorporatingaflame(flashback)arrestorTheEuropeanStandardEN730-1:2002hasthestatusofaBritishStandardICS25.160.30 CopyrightBritishStandardsInstitutionReproducedbyIHSunderlicensewithBSI-UncontrolledCopyDocumentprovidedbyIHSLicensee=BureauVeritas/5959906001,11/08/200405:32:29MSTQuestionsorcommentsaboutthismessage:pleasecalltheDocumentPolicyGroupat303-397-2295.--`,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,`---BSEN730-1:2002ThisBritishStandard,havingbeenpreparedunderthedirectionoftheEngineeringSectorPolicyandStrategyCommittee,waspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon13November2002©BSI13November2002ISBN0580407322NationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN730-1:2002.TogetherwithBSEN730-2:2002itsupersedesBSEN730:1995whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeWEE/18,Gasweldingappliances,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to20,aninsidebackcoverandabackcover.TheBSIcopyrightdatedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateCommentsCopyrightBritishStandardsInstitutionReproducedbyIHSunderlicensewithBSI-UncontrolledCopyDocumentprovidedbyIHSLicensee=BureauVeritas/5959906001,11/08/200405:32:29MSTQuestionsorcommentsaboutthismessage:pleasecalltheDocumentPolicyGroupat303-397-2295.--`,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,`---EUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN730-1October2002ICS25.160.30EnglishversionGasweldingequipment-Safetydevices-Part1:Incorporatingaflame(flashback)arrestorMatérieldesoudageauxgaz-Dispositifsdesécurité-Partie1:AvecarrêtdeflammeGasschweißgeräte-Sicherheitseinrichtungen-Teil1:MitintegrierterFlammensperreThisEuropeanStandardwasapprovedbyCENon8August2002.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:ruedeStassart,36B-1050Brussels©2002CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN730-1:2002ECopyrightBritishStandardsInstitutionReproducedbyIHSunderlicensewithBSI-UncontrolledCopyDocumentprovidedbyIHSLicensee=BureauVeritas/5959906001,11/08/200405:32:29MSTQuestionsorcommentsaboutthismessage:pleasecalltheDocumentPolicyGroupat303-397-2295.--`,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,`---EN730-1:2002(E)2ContentspageForeword......................................................................................................................................................................31Scope..............................................................................................................................................................42Normativereferences....................................................................................................................................43Termsanddefinitions....................................................................................................................................44Designandmaterials.....................................................................................................................................74.1Connection..................................................................................