ISO16852国际阻火器测试标准

INTERNATIONALISOSTANDARD16852Firstedition2008-03-01Flamearresters—Performancerequirements,testmethodsandlimitsforuseArrête-flammes—Exigencesdeperformance,méthodesd'essaietlimitesd'utilisationReferencenumberISO16852:2008(E)©ISO2008Normen-Download-Beuth-BraunschweigerFlammenfilterGmbH-KdNr.381813-LfNr.4051302001-2008-06-0906:28B55EB1B3C7662F79D1B59483A53B9F2F82C98BEEB79391946AC566ADC1FE069461F44B1AC2DB479E9DA165B04E4AC188E532CDD81CF05018982D08A0749C34896C65EAF7692836A2542B000B0CBE2268F0B9782AB6ACBF9EFA7569C45D9D4321E803BF8F94ISO16852:2008(E)PDFdisclaimerThisPDFfilemaycontainembeddedtypefaces.InaccordancewithAdobe'slicensingpolicy,thisfilemaybeprintedorviewedbutshallnotbeeditedunlessthetypefaceswhichareembeddedarelicensedtoandinstalledonthecomputerperformingtheediting.Indownloadingthisfile,partiesacceptthereintheresponsibilityofnotinfringingAdobe'slicensingpolicy.TheISOCentralSecretariatacceptsnoliabilityinthisarea.AdobeisatrademarkofAdobeSystemsIncorporated.DetailsofthesoftwareproductsusedtocreatethisPDFfilecanbefoundintheGeneralInforelativetothefile;thePDF-creationparameterswereoptimizedforprinting.EverycarehasbeentakentoensurethatthefileissuitableforusebyISOmemberbodies.Intheunlikelyeventthataproblemrelatingtoitisfound,pleaseinformtheCentralSecretariatattheaddressgivenbelow.COPYRIGHTPROTECTEDDOCUMENT©ISO2008Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromeitherISOattheaddressbeloworISO'smemberbodyinthecountryoftherequester.ISOcopyrightofficeCasepostale56•CH-1211Geneva20Tel.+41227490111Fax+41227490947E-mailcopyright@iso.orgWebwww.iso.orgPublishedinSwitzerlandii©ISO2008–AllrightsreservedNormen-Download-Beuth-BraunschweigerFlammenfilterGmbH-KdNr.381813-LfNr.4051302001-2008-06-0906:28B55EB1B3C7662F79D1B59483A53B9F2F82C98BEEB79391946AC566ADC1FE069461F44B1AC2DB479E9DA165B04E4AC188E532CDD81CF05018982D08A0749C34896C65EAF7692836A2542B000B0CBE2268F0B9782AB6ACBF9EFA7569C45D9D4321E803BF8F94ISO16852:2008(E)ContentsPageForeword.............................................................................................................................................................vIntroduction.......................................................................................................................................................vi1Scope.....................................................................................................................................................12Normativereferences...........................................................................................................................13Termsanddefinitions...........................................................................................................................24Symbols.................................................................................................................................................45Hazardsandflamearresterclassifications........................................................................................65.1Flametransmission:deflagration,stableandunstabledetonation................................................65.2Flametransmission:stabilizedburning.............................................................................................76Generalrequirements...........................................................................................................................76.1Measuringinstruments........................................................................................................................76.2Construction..........................................................................................................................................76.3Housings................................................................................................................................................86.4Joints......................................................................................................................................................86.5Pressuretest.........................................................................................................................................86.6Leaktest................................................................................................................................................86.7Flowmeasurement(air)........................................................................................................................86.8Flametransmissiontest.......................................................................................................................96.9Summaryofteststobeconducted...................................................................................................117Specificrequirementsforstaticflamearresters.............................................................................127.1Construction........................................................................................................................................127.2Designseries.......................................................................................................................................127.3Flametransmissiontest.....................................................................................................................137.4Limitsforuse......................................................................................................................................268Specificrequirementsforliquidproductdetonationflamearresters...........................................278.1Liquidseals.........................................................................................................................................278.2Footvalves..........................................................................................................................................288.3Flametransmissiontest.....................................................................................................................298.4Limitsforuse......................................................................................................................................309Specificrequirementsfordynamicflamearresters(highvelocityventvalves)..........................309.1General.................................................................................................................................................309.2Flametransmissiontest.....................................................................................................................309.3Enduranceburningtest......................................................................................................................319.4Limitsforuse......................................................................................................................................3310Specificrequirementsforhydraulicflamearresters......................................................................3310.1Equipment...........................................................................................................................................3310.2Flametransmissiontest.....................................................................................................................3410.3Limitsforuse......................................................................................................................................3511Informationforuse.............................................................................................................................3711.1Instructionsforuse............................................................................................................................3711.2Marking................................................................................................................................................37AnnexA(normative)Flowmeasurement......................................................................................................40AnnexB(informative)Informationforselectingflamearresters................................................................44AnnexC(informative)Bestpractice...............................................................................................................45©ISO2008–AllrightsreservediiiNormen-Download-Beuth-BraunschweigerFlammenfilterGmbH-KdNr.381813-LfNr.4051302001-2008-06-0906:28B55EB1B3C7662F79D1B59483A53B9F2F82C98BEEB79391946AC566ADC1FE069461F44B1AC2DB479E9DA165B04E4AC188E532CDD81CF05018982D08A0749C34896C65EAF7692836A2542B000B0CBE2268F0B9782AB6ACBF9EFA7569C45D9D4321E803BF8F94ISO16852:2008(E)AnnexD(informative)Useofin-linestabledetonationflamearresters.....................................................46Bibliography.....................................................................................................................................................47iv©ISO2008–AllrightsreservedNormen-Download-Beuth-BraunschweigerFlammenfilterGmbH-KdNr.381813-LfNr.4051302001-2008-06-0906:28B55EB1B3C7662F79D1B59483A53B9F2F82C98BEEB79391946AC566ADC1FE069461F44B1AC2DB479E9DA165B04E4AC188E532CDD81CF05018982D08A0749C34896C65EAF7692836A2542B000B0CBE2268F0B9782AB6ACBF9EFA7569C45D9D4321E803BF8F94ISO16852:2008(E)ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part2.ThemaintaskoftechnicalcommitteesistoprepareInternationalStandards.DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting.PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.ISO16852waspreparedbyTechnicalCommitteeISO/TC21,Equipmentforfireprotectionandfirefighting.©ISO2008–AllrightsreservedvNormen-Download-Beuth-BraunschweigerFlammenfilterGmbH-KdNr.381813-LfNr.4051302001-2008-06-0906:28B55EB1B3C7662F79D1B59483A53B9F2F82C98BEEB79391946AC566ADC1FE069461F44B1AC2DB479E9DA165B04E4AC188E532CDD81CF05018982D08A0749C34896C65EAF7692836A2542B000B0CBE2268F0B9782AB6ACBF9EFA7569C45D9D4321E803BF8F94ISO16852:2008(E)IntroductionFlamearrestersaresafetydevicesfittedtoopeningsofenclosuresortopipework,andareintendedtoallowflowbutpreventflametransmission.Theyhavewidelybeenusedfordecadesinthechemicalandoilindustry,andavarietyofnationalstandardsisavailable.ThisInternationalStandardwaspreparedbyaninternationalgroupofexperts,whoseaimwastoestablishaninternationalbasisbyharmonizingandincorporatingrecentnationaldevelopmentsandstandardsasfarasreasonable.ThisInternationalStandardaddressesmanufacturers(performancerequirements)andtestinstitutes(testmethods),aswellascustomers(limitsforuse).Onlyrelativelygeneralperformancerequirementsarespecifiedandthesearekepttoastrictminimum.Experiencehasshownthatexcessivelyspecificrequirementsinthisfieldoftencreateunjustifiedrestrictionsandpreventinnovativesolutions.Thehazardidentificationofcommonapplicationsfoundinindustryleadstothespecificationofthetestmethods.Thesetestmethodsreflectstandardpracticalsituationsand,assuch,formtheheartofthisInternationalStandardbecausetheyalsoallowclassificationofthevarioustypesofflamearrestersandthendeterminationofthelimitsofuse.Aconsiderablenumberoftestmethodsandtestconditionshadtobetakenintoaccountfortwomainreasons:a)differenttypesofflamearrestersarecoveredwithrespecttotheoperatingprinciple(static,hydraulic,liquid,dynamic),andeachtypeclearlyneedsitsspecifictestset-upandtestprocedure;b)itisnecessarytoadaptflamearresterstothespecialconditionsofapplication(gas,installation)becauseoftheconflictingdemandsofhighflamequenchingcapabilityandlowpressureloss;thissituationiscompletelydifferentfromtheotherwisesimilarprincipleofprotectionbyflameproofenclosure(ofelectricalequipment),wheretheimportanceofgasflowthroughgapsisnegligible.Consequently,inthisInternationalStandard,thetestingandclassificationrelatedtothegasgroupsandtheinstallationconditionshasbeensubdividedmorethanisusuallythecase.Inparticular,⎯explosiongroupIIAissubdividedintosub-groupsIIA1andIIA,⎯explosiongroupIIBissubdividedintosub-groupsIIB1,IIB2,IIB3andIIB,and⎯thetype“detonationarrester”isdividedintofoursub-types,whichtakeintoaccountspecificinstallationsituations.Thetestconditionsleadtothelimitsforusewhicharemostimportantforthecustomer.ThisInternationalStandardspecifiesthissafetyrelevantinformationanditsdisseminationthroughthemanufacturer'swritteninstructionsforuseandthemarkingoftheflamearresters.Thelimitsforusearealsoalinktomoregeneral(operational)safetyconsiderationsandregulations,whichremaintheresponsibilityofnationalorcorporateauthorities.AnnexesB,CandDoffersomeguidanceinthisfield.vi©ISO2008–AllrightsreservedNormen-Download-Beuth-BraunschweigerFlammenfilterGmbH-KdNr.381813-LfNr.4051302001-2008-06-0906:28B55EB1B3C7662F79D1B59483A53B9F2F82C98BEEB79391946AC566ADC1FE069461F44B1AC2DB479E9DA165B04E4AC188E532CDD81CF05018982D08A0749C34896C65EAF7692836A2542B000B0CBE2268F0B9782AB6ACBF9EFA7569C45D9D4321E803BF8F94INTERNATIONALSTANDARDISO16852:2008(E)Flamearresters—Performancerequirements,testmethodsandlimitsforuse1ScopeThisInternationalStandardspecifiestherequirementsforflamearrestersthatpreventflametransmissionwhenexplosivegas-airorvapour-airmixturesarepresent.Itestablishesuniformprinciplesfortheclassification,basicconstructionandinformationforuse,includingthemarkingofflamearresters,andspecifiestestmethodstoverifythesafetyrequirementsanddeterminesafelimitsofuse.ThisInternationalStandardisvalidforpressuresrangingfrom80kPato160kPaandtemperaturesrangingfrom−20°Cto+150°C.NOTE1Indesigningandtestingflamearrestersforoperationunderconditionsotherthanthosespecifiedabove,thisInternationalStandardcanbeusedasaguide.However,additionaltestingrelatedspecificallytotheintendedconditionsofuseisadvisable.Thisisparticularlyimportantwhenhightemperaturesandpressuresareapplied.Thetestmixturesmightneedtobemodifiedinthesecases.ThisInternationalStandardisnotapplicabletothefollowing:⎯externalsafety-relatedmeasurementandcontrolequipmentthatmightberequiredtokeeptheoperationalconditionswithintheestablishedsafelimits;NOTE2Integratedmeasurementandcontrolequipment,suchasintegratedtemperatureandflamesensorsaswellaspartswhich,forexample,intentionallymelt(retainingpin),burnaway(weatherhoods)orbend(bimetallicstrips),iswithinthescopeofthisInternationalStandard.⎯flamearrestersusedforexplosivemixturesofvapoursandgases,whichtendtoself-decompose(e.g.acetylene)orwhicharechemicallyunstable;⎯flamearrestersusedforcarbondisulphide,duetoitsspecialproperties;⎯flamearresterswhoseintendeduseisformixturesotherthangas-airorvapour-airmixtures(e.g.higheroxygen-nitrogenratio,chlorineasoxidant,etc.);⎯flamearrestertestproceduresforinternal-combustioncompressionignitionengines;⎯fastactingvalves,extinguishingsystemsandotherexplosionisolatingsystems;⎯flamearrestersintegratedorcombinedwithexplosion-protectedequipment,suchasblowers,fans,compressorsandpumps.2NormativereferencesThefollowingreferenceddocumentsareindispensablefortheapplicationofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.IEC60079-1,Explosiveatmospheres—Part1:Equipmentprotectionbyflameproofenclosures“d”©ISO2008–Allrightsreserved1Normen-Download-Beuth-BraunschweigerFlammenfilterGmbH-KdNr.381813-LfNr.4051302001-2008-06-0906:28B55EB1B3C7662F79D1B59483A53B9F2F82C98BEEB79391946AC566ADC1FE069461F44B1AC2DB479E9DA165B04E4AC188E532CDD81CF05018982D08A0749C34896C65EAF7692836A2542B000B0CBE2268F0B9782AB6ACBF9EFA7569C45D9D4321E803BF8F94ISO16852:2008(E)IEC60079-1-1:2002,Electricalapparatusforexplosivegasatmospheres—Part1-1:Flameproofenclosures“d”—Methodoftestforascertainmentofmaximumexperimentalsafegap3TermsanddefinitionsForthepurposesofthisdocument,thefollowingtermsanddefinitionsapply.3.1flamearresterdevicefittedtotheopeningofanenclosure,ortotheconnectingpipeworkofasystemofenclosures,andwhoseintendedfunctionistoallowflowbutpreventthetransmissionofflame3.2housingportionofaflamearresterwhoseprincipalfunctionistoprovideasuitableenclosurefortheflamearresterelementandallowmechanicalconnectionstoothersystems3.3flamearresterelementportionofaflamearresterwhoseprincipalfunctionistopreventflametransmission3.4stabilizedburningsteadyburningofaflamestabilizedat,orcloseto,theflamearresterelement3.5shorttimeburningstabilizedburningforaspecifiedtime3.6enduranceburningstabilizedburningforanunlimitedtime3.7explosionabruptoxidationordecompositionreactionproducinganincreaseintemperature,pressure,orinbothsimultaneously3.8deflagrationexplosionpropagatingatsubsonicvelocity3.9detonationexplosionpropagatingatsupersonicvelocityandcharacterizedbyashockwave3.10stabledetonationdetonationprogressingthroughaconfinedsystemwithoutsignificantvariationofvelocityandpressurecharacteristicsNOTEFortheatmosphericconditions,testmixturesandtestproceduresofthisInternationalStandard,typicalvelocitiesrangebetween1600m/sand2200m/s.3.11unstabledetonationdetonationduringthetransitionofacombustionprocessfromadeflagrationintoastabledetonation2©ISO2008–AllrightsreservedNormen-Download-Beuth-BraunschweigerFlammenfilterGmbH-KdNr.381813-LfNr.4051302001-2008-06-0906:28B55EB1B3C7662F79D1B59483A53B9F2F82C98BEEB79391946AC566ADC1FE069461F44B1AC2DB479E9DA165B04E4AC188E532CDD81CF05018982D08A0749C34896C65EAF7692836A2542B000B0CBE2268F0B9782AB6ACBF9EFA7569C45D9D4321E803BF8F94ISO16852:2008(E)NOTEThetransitionoccursinalimitedspatialzone,wherethevelocityofthecombustionwaveisnotconstantandwheretheexplosionpressureissignificantlyhigherthaninastabledetonation.Thepositionofthistransitionzonedepends,amongstotherfactors,onpipediameter,pipeconfiguration,testgasandexplosiongroup.3.12Characteristicsafetydataofexplosivemixtures3.12.1maximumexperimentalsafegapMESGsafegapmeasuredinaccordancewithIEC60079-1-1:20023.12.2explosiongroupEx.Grankingofflammablegas-airmixtureswithrespecttotheMESGNOTESeeTable2,columns1and2.3.13bi-directionalflamearresterflamearresterthatpreventsflametransmissionfrombothsides3.14deflagrationflamearresterDEFflamearresterdesignedtopreventthetransmissionofadeflagrationNOTEItcanbeanend-of-lineflamearrester(3.21)oranin-lineflamearrester(3.22).3.15detonationflamearresterDETflamearresterdesignedtopreventthetransmissionofadetonationNOTEItcanbeanend-of-lineflamearrester(3.21)oranin-lineflamearrester(3.22),andcanbeusedforbothstabledetonations(3.10)andunstabledetonations(3.11).3.16enduranceburningflamearresterflamearresterthatpreventsflametransmissionduringandafterenduranceburning3.17staticflamearresterflamearresterdesignedtopreventflametransmissionbyquenchinggaps3.17.1measurabletypeflamearresterwherethequenchinggapsoftheflamearresterelementcanbetechnicallydrawn,measuredandcontrolled3.17.2non-measurabletypeflamearresterwherethequenchinggapsoftheflamearresterelementcannotbetechnicallydrawn,measuredorcontrolledEXAMPLERandomstructuressuchasknittedmesh,sinteredmaterialsandgravelbeds.©ISO2008–Allrightsreserved3Normen-Download-Beuth-BraunschweigerFlammenfilterGmbH-KdNr.381813-LfNr.4051302001-2008-06-0906:28B55EB1B3C7662F79D1B59483A53B9F2F82C98BEEB79391946AC566ADC1FE069461F44B1AC2DB479E9DA165B04E4AC188E532CDD81CF05018982D08A0749C34896C65EAF7692836A2542B000B0CBE2268F0B9782AB6ACBF9EFA7569C45D9D4321E803BF8F94ISO16852:2008(E)3.18dynamicflamearreste