EN 13237 2024.docx

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1、EN13237October2024SupersedesEN13237:2012EuropeanstandardNormeeuropeenneEuropaischenormICS01.040.13;01.040.29;13.230;29.260.20EnglishVersionPotentiallyexplosiveatmospheres-TermsanddefinitionsforequipmentandprotectivesystemsintendedforuseinpotentiallyexplosiveatmospheresAtmospheresexplosibles-Termeset

2、definitionspourlesappareilsetsystemesdeprotectiondestinesaetreutilisesenatmospheresexplosiblesExplosionsgefahrdeteBereiche-BegriffefiirGerateundSchutzsystemezurVerwendunginexplosionsgefahrdetenBereichenThisEuropeanStandardwasapprovedbyCENon12August2024.CENmembersareboundtocomplywiththeCEN/CENELECInt

3、ernalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCEN-CENELECManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinth

4、reeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCEN-CENELECManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,Croatia,Cyprus,

5、CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TiirkiyeandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATI

6、ONCOMITEEUROPEENDENORMALISATIONEuropaischeskomiteefurnormungCEN-CENELECManagementCentre:RuedelaScience23,B-1040Brussels2024CENAllrightsofexploitationinanyformandbyanymeansreservedRef.No.EN13237:2024EworldwideforCENnationalMembers.PageContentsEuropeanforeword3Introduction41 Scope52 Normativereference

7、s53 Termsanddefinitions5AnnexA(informative)DefinitionsfromDirective2014/34/EUandcorrigenda28AnnexB(informative)SignificantchangesbetweenthisdocumentandEN13237:2012.31AnnexZA(informative)RelationshipbetweenthisEuropeanStandardandtheessentialrequirementsofDirective2014/34/EUaimedtobecovered36Bibliogra

8、phy37EuropeanforewordThisdocument(EN13237:2024)hasbeenpreparedbyTechnicalCommitteeCEN/TC305,Potentiallyexplosiveatmospheres-ExplosionpreventionandprotectionthesecretariatofwhichisheldbyDIN.ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbyendorsemen

9、t,atthelatestbyApril2025,andconflictingnationalstandardsshallbewithdrawnatthelatestbyApril2025.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.CENshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.ThisdocumentsupersedesEN13237:2012.Thesig

10、nificanttechnicalchangesbetweenthisdocumentandEN13237:2012aregiveninAnnexB,TableB.l.ThisdocumenthasbeenpreparedunderastandardizationrequestaddressedtoCENbytheEuropeanCommission.TheStandingCommitteeoftheEFTAStatessubsequentlyapprovestheserequestsforitsMemberStates.ForrelationshipwithEuLegislation,see

11、informativeAnnexZA,whichisanintegralpartofthisdocument.Anyfeedbackandquestionsonthisdocumentshouldbedirectedtotheusersnationalstandardsbody.AcompletelistingofthesebodiescanbefoundontheCENwebsite.AccordingtotheCEN-CENELECInternalRegulations,thenationalstandardsorganisationsofthefollowingcountriesareb

12、oundtoimplementthisEuropeanStandard:Austria,Belgium,Bulgaria,Croatia,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,S

13、weden,Switzerland,TiirkiyeandtheUnitedKingdom.IntroductionThisdocumenthasbeenproducedtoassistdesigners,manufacturersandotherinterestedpartiestouseharmonizedtermsanddefinitions(vocabulary)forequipmentandprotectivesystemsintendedforuseinpotentiallyexplosiveatmospheres.Itdescribesthevocabularytobeusedt

14、ogiveallstandardsinthisareaanoveralluniformityofterminology.Throughoutthisdocument,theonlyhazardconsideredistheexplosionofanexplosiveatmosphere.1 ScopeThisdocumentspecifiestermsanddefinitions(vocabulary)tobeusedinsuitablestandardsdealingwithequipmentandprotectivesystemsintendedforuseinpotentiallyexp

15、losiveatmosphereswithinthescopeofDirective2014/34/EU.NOTETermsanddefinitionsavoidmisunderstandingsthatareimportantinrelationtotheessentialhealthandsafetyrequirementsofDirective2014/34/EU.2 NormativereferencesTherearenonormativereferencesinthisdocument.3 TermsanddefinitionsForthepurposesofthisdocumen

16、t,thefollowingtermsanddefinitionsapply.ISOandIECmaintainterminologydatabasesforuseinstandardizationatthefollowingaddresses:一IECElectropedia:availableathttps:/www.electropedia.org/一ISOOnlinebrowsingplatform:availableathttps:/www.iso.org/obp3.1airflowvelocityvolumeofairm3whichflowsthroughadefinedsurfa

17、cemAsimpactedbyENIEC60079-0:2018/AC:2020-02andENIEC60079-0:2018/All:2024.Tobepublished.Stageatthetimeofpublication:FprENISO/IEC80079-49.perunittimesSOURCE:EN17077:2018,3.13.2ambientatmospherenormalatmospheresurroundingtheequipmentandprotectivesystem3.3ambienttemperaturetemperatureoftheairorothermedi

18、a,intheimmediatevicinityoftheequipmentorcomponentSOURCE:ENIEC60079-0:20181,3.1,modified-Note1toentry,Note2toentryandNote3toentryhavebeenremoved3.4atmosphericconditionsconditionswithpressuresrangingfrom80kPato110kPaandtemperaturesrangingfrom-20to+60oCSOURCE:ENISO16852:2016,3.25Note1toentry:ENISO16852

19、willbereplacedbyENISO/IEC80079-492.3.5combustibledustfinelydividedsolidparticles,500morlessinnominalsize,whichcanformexplosivemixtureswithairatstandardatmosphericpressureandtemperaturesNote1toentry:ThisincludesdustandgritasdefinedinISO4225:2020.Note2toentry:Thetermr,solidparticles,isintendedtoaddres

20、sparticlesinthesolidphasebutdoesnotprecludeahollowparticle.SOURCE:ENISO/IEC80079-20-2:2016AsimpactedbyENISO/IEC80079-20-2:2016/AC:2017.,3.1,modifiedmayhasbeenreplacedwithcan;referencedateinNote1toentryhasbeenupdated3.5.1 conductivedustcombustiblemetaldustsandothercombustibledustswithelectricalresist

21、ivityequaltoorlessthan1103mNote1toentry:Metaldustistreatedasconductivedustbecauseitisassumedthatsurfaceoxidationcannotbedependedupontoalwaysensureelectricalresistivitygreaterthan1IO3mSOURCE:ENISO/IEC80079-20-2:20163,3.1.13.5.2non-conductivedustcombustibledustwithelectricalresistivitygreaterthan1103m

22、SOURCE:ENISO/IEC80079-20-2:20163,3.1.23.6combustibleflyingssolidparticles,includingfibres,whereonedimensionisgreaterthan500minnominalsize,whichmayformanexplosivemixturewithairatstandardatmosphericpressureandtemperatureNote1toentry:Theratiooflengthtowidthis3ormore.Note2toentry:Examplesofflyingsinclud

23、ecarbonfibre,rayon,cotton(includingcottonlintersandcottonwaste),sisal,jute,hemp,cocoafibre,oakumandbaledwastekapok.SOURCE:ENISO/IEC80079-20-2:20163,3.23.7constructionalsafetycignitionprotectionwhereconstructionalmeasuresareappliedsoastoprotectagainstthepossibilityofignitionfromhotsurfaces,sparksanda

24、diabaticcompressiongeneratedbymovingpartsSOURCE:ENISO80079-37:2016,3.13.8controlofignitionsourcebignitionprotectionwheremechanicalorelectricaldevicesareusedinconjunctionwithnonelectricalequipmenttomanuallyorautomaticallyreducethelikelihoodofapotentialignitionsourcefrombecominganeffectiveignitionsour

25、ceNote1toentry:Thismightforexamplebealevelsensorusedtoindicatelossofoil,atemperaturesensortoindicateahotbearingoraspeedsensortoindicateover-speed.SOURCE:ENISO80079-37:2016,3.33.9controlmeasure3.9.1automaticcontrolmeasureactiontakenwithoutmanualintervention,toreducethelikelihoodofapotentialignitionso

26、urcefrombecominganeffectiveignitionsourceSOURCE:ENISO80079-37:2016,3.3,13.9.2manualcontrolmeasureactiontakenbyapersonasaresultofawarning,indication,oralarm,toreducethelikelihoodofapotentialignitionsourcefrombecominganeffectiveignitionsourceSOURCE:ENISO80079-37:2016,3.3.23.10ignitionpreventiondevicei

27、gnitionpreventionsystemarrangementthatconvertssignalsfromoneormoresensorsintoanaction,orindication,toreducethelikelihoodofapotentialignitionsourcefrombecominganeffectiveignitionsourceSOURCE:ENISO80079-37:2016,3.3.3,modified-11ignitionpreventionCieViCeS/systemshasbeenreplacedwith11ignitionpreventiond

28、evice,and11ignitionpreventionsystem”3.11safetydevicedeviceintendedforuseinsideoroutsideexplosiveatmospheresbutrequiredfororcontributingtothesafefunctioningofequipmentandprotectivesystemswithrespecttotherisksofexplosionSOURCE:ENISO80079-37:2016,3.3.4,modified-deviceshasbeenreplacedwithdevice”(twice)3

29、12continuousgradeofreleasereleasewhichiscontinuousorisexpectedtooccurfrequentlyorforlongperiodsSOURCE:ENIEC60079-10-1:2021,3.4.2,modified-Note1toentryhasbeendeleted3.13deflagrationexplosionpropagatingatsubsonicvelocitySOURCE:ISO8421-1:1987,1.113.14degreeofprotectionextentofprotectionprovidedbyanenc

30、losureagainstaccesstohazardousparts,againstingressofsolidforeignobjectsand/oringressofwaterandverifiedbystandardisedtestmethodsSOURCE:EN60529:199133.33.15detonationexplosionpropagatingatsupersonicvelocityandcharacterisedbyashockwaveSOURCE:ISO8421-1:1987,1,123.16dustsmallsolidparticlesintheatmosphere

31、whichsettleoutundertheirownweight,butwhichmayremainsuspendedinairforsometimeNote1toentry:Generallycombustibledustswithamedianvalueoftheparticlediameterbelow500mmayformexplosibledust/air-mixtures.SOURCE:EN14034-l:2004+Al:2011,3.1,modified-Note1toentryhasbeenchanged3.17electricalequipmentitemsapplieda

32、sawholeorinpartfortheutilisationofelectricalenergyNote1toentry:Theseinclude,amongothers,itemsforthegeneration,transmission,distribution,storage,measurement,regulation,conversionandconsumptionofelectricalenergyanditemsfortelecommunications.SOURCE:ENIEC60079-0:20181,3.31,13.18electrostaticleakageresis

33、tanceelectricalresistancemeasuredbetweenanobjectandearthSOURCE:EN14983:2007,3.13.19enclosure(ofequipmentorprotectivesystem)allthewallsincludingdoorslcovers,cableentries,rods,spindlesandshaftswhichcontributetothetypeofprotectionand/ortheirdegreeofprotection(IP)4AsimpactedbyEN60529:1991/Al:2000,EN6052

34、9:1991/A2:2013,EN60529:1991/AC:2016-12andEN60529:1991/corrigendumMay1993.3.20equipmentgroupingclassificationsystemofequipmentrelatedtotheexplosiveatmosphereforwhichtheyareintendedtobeusedSOURCE:ENIEC60079-0:20183.32,modified-Note1toentrydeleted3.21ExComponentpartofExEquipmentoramodule,markedwiththeS

35、ymbOIU,whichisnotintendedtobeusedaloneandrequiresadditionalconsiderationwhenincorporatedintoExEquipmentorsystemsforuseinexplosiveatmospheresSOURCE:ENISO80079-36:2016AsimpactedbyENISO80079-36:2016/AC:2019.,3.93.22ExEquipmentequipmentwheremeasureshavebeenappliedtoensurethateffectiveignitionsourcesarem

36、itigatedasrequiredbytheEquipmentProtectionLevel(EPL)Note1toentry:Thisincludestheignitionhazardassessmentand/orprotectivemeasuresinaccordancewithENISO8007936:2016.SOURCE:ENISO80079-36:20165,3.11,modified-intheNote1toentry11thisStandardnhasbeenreplacedwiththestandardreference3.23explosionsuddenincreas

37、eofpressureandtemperature,duetooxidationorotherexothermicreactionSOURCE:ENISO/IEC80079-38:2016AsimpactedbyENISO/IEC80079-38:2016/Al:2018.,3.63.24explosionregionareainsidetheboundarycurveformedbytheexplosionlimitsofaflammablesubstanceinvariousmixtureswithairandinertgasNote1toentry:Inmanycasestheairco

38、ncentrationattheapexoftheboundarycurveCorrespondstothelimitingairconcentration,LAC.Note2toentry:Inmanycasesthisisalsocalledexplosionrange.Key1 explosionregion2 apex3 stoichiometriclinexmolarfractionin%INinertgasTStestsubstanceaairLACLimitingairconcentrationLELLowerexplosionlimitUELUpperexplosionlimi

39、tFigure1Explosionregionforaternarysystemoftestsubstance,airandinertgas3.25explosiondiverterpassivedevicetypicallyinstalledinaductpreventingflamejetignition,pressurepilingandreducingtheprobabilityofflametransmissionintoconnectedequipment3.26explosionisolationflapvalvevalvecontainingaflapwhichisfixedt

40、othehousingonanaxisperpendiculartotheflowdirection,keptopenbytheprocessflowandabletostopexplosionsfrompropagatingthroughpipelinesinthedirectionoppositetothenormalprocessflowthroughthevalveSOURCE:EN16447:2014,3.1,modified-Note1toentryhasbeendeleted3.27explosionisolationsystem1.1.1 1activeexplosioniso

41、lationsystemprotectivesystemwhichisdesignedtostopexplosionsfromtravellingthroughpipelinesandisactivatedbydetectorsandcontrolandindicatingequipment(ClE)whichareinherentpartsofthesystemSOURCE:EN15089:2009,3.7.1,modifieddefinitionhasbeenchanged1.1.2 2passiveexplosionisolationsystemprotectivesystemwhich

42、isdesignedtostopexplosionsfromtravellingthroughpipelinesanddoesnotrequiredetectorsandacontrolandindicatingequipment(ClE)SOURCE:EN15089:2009,3.7.2,modifieddefinitionhasbeenchanged3.28explosionlimits3.28.1lowerexplosionlimitLELlowestconcentrationoftheexplosionrangeNote1toentry:Thoseconcentrationsaregi

43、venatwhichanexplosionjustfailsduringthetests.SOURCE:EN1839:2017,33modified-Note1toentry3.28.2upperexplosionlimitUELhighestconcentrationoftheexplosionrangeNote1toentry:Thoseconcentrationsaregivenatwhichanexplosionjustfailsduringthetests.SOURCE:EN1839:2017,34,modified-Note1toentry3.29explosionpoints3.

44、29.1lowerexplosionpointtemperatureofaflammableliquidatwhichtheconcentrationofthesaturatedvapourinairisequaltothelowerexplosionlimit3.29.2upperexplosionpointtemperatureofaflammableliquidatwhichtheconcentrationofthesaturatedvapourinairisequaltotheupperexplosionlimit3.30explosionpressurePeXhighestpress

45、ureoccurringinaclosedvesselduringtheexplosionofaspecificmixtureofflammablesubstanceswithairorairandinertgasesdeterminedunderspecifiedtestconditionsNote1toentry:PeXiSexpressedasabsolutepressurewithgasesandvapourandasoverpressurewithdusts.SOURCE:EN15967:2022,3.1,modified-Note1toentryhasbeenmodified3.3

46、0.1maximumexplosionpressurePrnaXmaximumvalueofexplosionpressuremeasuredinthetestsforexplosionpressurewhenthecontentoftheflammablesubstancesinthemixtureisvariedNote1toentry:PmaXiSexpressedasabsolutepressurewithgasesandvapourandasoverpressurewithdusts.SOURCE:EN15967:2022,3.2,modified-Note1toentryhasbe

47、enmodified3.30.2rateofexplosionpressurerise(dpdt)ehighestvalueoftheslope(firstderivative)ofthepressure-timecurve(smoothedifnecessary),measuredinaclosedvesselduringtheexplosionofaspecificmixtureofflammablesubstanceswithairorairandinertsubstancesdeterminedunderspecifiedtestconditionsSOURCE:EN15967:2022,3.33.30.3maximumrateofexplosionpressurerise(dpdtmaxmaximumvalueoftheexplosionpressureriseperunittimemeasuredinthetestswhenthecontentoftheflammablesubstancesinthemixtureisvariedSOURCE:EN15967:2022,3.4,modified-Note1toentryhasbeendeleted3.