BS 341.4-2004 移动式气瓶阀门 第4部分：压力泄放装置

BRITISHSTANDARDBS341-4:2004Transportablegascontainervalves—Part4:PressurereliefdevicesICS23.060.40

 
 ©BSI15January2004ThefollowingBSIreferencesrelatetotheworkonthisBritishStandardCommitteereferencePVE/3/1Draftforcomment00/716619DCISBN0580431134CommitteesresponsibleforthisBritishStandardThepreparationofthisBritishStandardwasentrustedbyTechnicalCommittee,PVE/3,Gascontainers,toSubcommitteePVE/3/1,Valvefittingsforgascylinders,uponwhichthefollowingbodieswererepresented:BritishCompressedGasesAssociationDoH–MedicalDevicesAgencyHealthandSafetyExecutiveHomeOfficeLPGasAssociationMinistryofDefencePersonalSafetyManufacturer’sAssociationScubaIndustriesTradeAssociationLtd.AmendmentsissuedsincepublicationTextAmdNo.Comments©BSI15January2004iContentsCommitteesresponsibleInsidefrontcoverForewordii1Scope12Normativereferences13Termsanddefinitions14Designofpressurereliefdevices25Reliefpressure36Burstingdisctest37Installationandapplicationofpressurereliefdevices3©BSI15January2004ForewordThispartofBS341hasbeenpreparedbySubcommitteePVE/3/1onbehalfofTechnicalCommitteePVE/3andpartiallysupersedesBS341-1:1991,whichisobsolescent.BS341-1:1991detailedallaspectsofthedesign,manufactureandtestingofvalvesfittedtocontainersusedfortheconveyanceofpermanent,liquefiableanddissolvedgases,exceptthoseforliquefiedpetroleumgas(LPG)applications.Thescopeofthe1991versionhasbeenprogressivelysupersededbyaseriesofstandardsoriginatingintheEuropeanCommitteeforStandardization(CEN).ThispartofBS341hasbeenissuedtocoverrequirementsforpressurereliefdevices.However,itisanticipatedthatitwillbewithdrawnonthepublicationofafutureCENstandardonthissubject.BS341,Transportablegascontainervalves,ispublishedinfourparts:—Part1:Specificationforindustrialvalvesforworkingpressuresuptoandincluding300bar(obsolescent);—Part2:Valveswithtaperstemsforusewithbreathingapparatus(obsolescent);—Part3:Valveoutletconnections;—Part4:Pressurereliefdevices.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.SummaryofpagesThisdocumentcomprisesofafrontcover,aninsidefrontcover,pagesiandii,pages1to3andabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.©BSI15January200411ScopeThispartofBS341specifiesrequirementsforthedesignandapplicationofpressurereliefdevicesforusewithtransportablegascylindersmanufacturedforconveyanceandstorageofcompressed,liquefiedanddissolvedgasesforindustrialandmedicalapplications.ThispartofBS341doesnotincluderequirementsforpressurereliefdevicesforliquefiedpetroleumgas(LPG).ThispartofBS341appliestopressurereliefdevicesforcontainerslimitedtoachargingpressureof300bar)1)gauge.(Developedpressuresforparticulargasesmayexceedthispressure.)2NormativereferencesThefollowingreferenceddocumentsareindispensablefortheapplicationofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.BS2915:1990,Specificationforburstingdiscsandburstingdiscdevices.BSEN1802,Transportablegascylinders—Periodicinspectionandtestingofseamlessaluminiumgascylinders.BSEN1803,Transportablegascylinders—Periodicinspectionandtestingofweldedcarbonsteelgascylinders.BSEN1968,Transportablegascylinders—Periodicinspectionandtestingofseamlesssteelgascylinders.BSEN12863,Transportablegascylinders—Periodicinspectionandmaintenanceofdissolvedacetylenecylinders.BSENISO11114-1,Transportablegascylinders—Compatibilityofcylinderandvalvematerialswithgascontents—Part1:Metallicmaterials.BSENISO11114-2,Transportablegascylinders—Compatibilityofcylinderandvalvematerialswithgascontents—Part2:Non-metallicmaterials.BSENISO14246,Transportablegascylinders—Gascylindervalves—Manufacturingtestsandinspections.3TermsanddefinitionsForthepurposesofthispartofBS341,thefollowingtermsanddefinitionsapply.3.1pressurereliefdevicedevicedesignedtoreducethepossibilityoffailureofachargedcontainerfromexcessivepressureparticularlywhenthecontainerisexposedtoheat3.2pressurereliefvalvepressurereliefdevicethatisindirectcontactwiththegas,andisdesignedtoopenandclosewithinpredeterminedpressurelimits3.3burstingdiscpressurereliefdeviceconsistingofadiscthatisindirectcontactwiththegasandisdesignedtorupturebetweenpredeterminedpressurelimits3.4fusibleplugdevicecontainingamaterialoflowmeltingpointwhichisintendedtoyieldormeltwithinpredeterminedlimitsoftemperatureandpermitthedischargeofthecontainedgas1)1bar=105N/m2=100kPa.©BSI15January20043.5flowratingpressurepressureattheinletofapressurereliefdevicewhichisusedforestablishingitsratedflowcapacity3.6ratedflowcapacitycapacityofapressurereliefdevicemeasured