1、BRITISH STANDARD BS EN 13463-5:2003 Non-electrical equipment intended for use in potentially explosive atmospheres Part 5: Protection by constructional safety “c” The European Standard EN 13463-5:2003 has the status of a British Standard ICS 13.230 Licensed Copy: Institute Of Technology Tallaght, In
2、stitute of Technology, Mon Jul 23 10:14:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSIBS EN 13463-5:2003 This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 12 December 2003 BSI 12 December 2003 ISBN 0 580 43093 6 National foreword This British S
3、tandard is the official English language version of EN 13463-5:2003. The UK participation in its preparation was entrusted to Technical Committee FSH/23, Fire precautions in industrial and chemical plant, which has the responsibility to: A list of organizations represented on this committee can be o
4、btained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facili
5、ty of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
6、 aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages
7、 This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 29 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Licensed Copy: Institute Of Te
8、chnology Tallaght, Institute of Technology, Mon Jul 23 10:14:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN134635 December2003 ICS13.230 Englishversion Nonelectricalequipmentintendedforuseinpotentially explosiveatmospheresPart5:Protectionbyconstruction
9、al safety“c” Appareilsnonlectriquesdestinstreutilissen atmosphresexplosiblesPartie5:Protectionparscurit deconstruction“c” NichtelektrischeGertefrdenEinsatzin explosionsgefhrdetenBereichenTeil5:Schutzdurch KonstruktiveSicherheit“c” ThisEuropeanStandardwasapprovedbyCENon1September2003. CENmembersarebo
10、undtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropean Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcerningsuchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuro
11、peanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytranslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusastheofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepub
12、lic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUnited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050
13、Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN134635:2003E Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jul 23 10:14:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN134635:2003(E) 2 Contents page Forewo
14、rd3 1 Scope 4 2 Normativereferences 5 3 Termsanddefinitions. .5 4 General5 5 Requirementsformovingparts. .7 6 Requirementsforbearings . 8 7 Requirementsforpowertransmissionsystems. 9 8 Requirementsforclutchesandcouplings . .11 9 Requirementsforbrakesandbrakingsystems. .11 10 Requirementsforspringsan
15、dabsorbingelements .12 11 Requirementsforconveyorbelts .12 12 Marking .13 AnnexA (informative) Examplesofsomeofthethoughtprocessesandprinciplesusedinthe constructionofitemsofequipmentprotectedbyConstructionalSafetyprotection .14 AnnexB (normative) Testrequirements .21 AnnexZA (informative) Clausesof
16、thisEuropeanStandardaddressingessentialrequirementsorother provisionsofEUDirectives 23 Bibliography 29 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jul 23 10:14:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN134635:2003(E) 3 Foreword ThisdocumentEN134635:2003hasbeenp
17、reparedbyTechnicalCommitteeCEN/TC305“Potentiallyexplosive atmospheresExplosionpreventionandprotection”,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJune2004,andconflictingnationalstand
18、ardsshallbewithdrawnatthelatestby June2004. ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropean FreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s). ForrelationshipwithEUDirective(s),seeinformativeAnnexZA,whichisanintegralpartofthisdocument. Anne
19、xAisinformative.AnnexBisnormative. ThisdocumentincludesaBibliography. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ire
20、land,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom. Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jul 23 10:14:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN134635:2003(E) 4 Introduction Nonelectricalequipmen
21、thasbeenusedforover150yearsinindustrieshavingpotentiallyexplosiveatmospheres andagreatdealofexperiencehasbeengainedintheapplicationofprotectivemeasurestoreducetheriskofignition toanacceptablysafelevel.WiththeintroductionoftheATEXDirective94/9/ECandtheinclusionofnonelectrical equipmentinitsscope,itbe
22、camenecessarytoproduceignitionprotectionconceptstandardswhichclearlydefined theseprotectivemeasuresandincorporatedtheextensiveanddiverseexperiencegainedovertheyears. Oneofthemethodsofapplyingignitionprotection,hadbeentoselecttypesofequipmentnotcontaininganignition sourceinnormalserviceandthenapplygo
23、odengineeringprinciples,sothatriskofmechanicalfailureslikelytocreate incendivetemperaturesorsparks,wasreducedtoaverylowlevel.Suchprotectivemeasuresarereferredtointhis standardasignitionprotectionbyConstructionalSafety,ortypeofprotectionc. Thepurposeofthisstandard,isthereforetospecifytherequirementsf
24、orequipment,protectedbythetypeof protectioncwhichmeetstheessentialsafetyandhealthrequirementsdescribedinDirective94/9/EC. 1Scope 1.1 ThisEuropeanstandardspecifiestherequirementsforthedesignandconstructionofnonelectricalequipment, intendedforuseinpotentiallyexplosiveatmospheres,protectedbythetypeofpr
25、otectionConstructionalSafety“c“. 1.2 ThisstandardsupplementstherequirementsinEN134631,thecontentsofwhichalsoapplyinfullto equipmentconstructedinaccordancewiththisstandard. 1.3 Equipmentcomplyingwiththerelevantclausesofthisstandardmeettherequirementsforthefollowing categories: EquipmentGroupICategory
26、M2; EquipmentGroupIICategory2Gor2D; EquipmentGroupII Category1Gor1D; NOTE TherequirementsforGroupI,CategoryM1equipment,aregiveninEN50303whichspecifiestherequirementsfor bothelectricalandnonelectricalequipment. 1.4 Thetypeofignitionprotectiondescribedinthestandardcanbeusedeitheronitsownorincombinatio
27、nwith othertypesofignitionprotectiontomeettherequirementsforequipmentofGroupI,categoriesM1andM2or GroupII,categories1and2dependingontheignitionhazardassessmentinEN134631. Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jul 23 10:14:46 GMT+00:00 2007, Uncontrolled Copy,
28、(c) BSIEN134635:2003(E) 5 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyoft
29、hesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN982, SafetyofmachinerySafetyrequirementsforfluidpowersystemsandtheircomponentsHydraulics. EN983, SafetyofmachineryS
30、afetyrequirementsforfluidpowersystemsandtheircomponentsPneumatics. EN11271:1997,ExplosiveatmospheresExplosionpreventionandprotection Part1:Basicconceptsand methodology. EN11272:2002,Explosiveatmospheres Explosionpreventionandprotection Part2:Basicconceptsand methodologyformining. EN134631:2001,Nonel
31、ectricalequipmentforpotentiallyexplosiveatmospheresPart1:Basicmethodand requirements. prEN134636, NonelectricalequipmentforpotentiallyexplosiveatmospheresPart6:Protectionbycontrolof ignitionsourceb. EN134638,Nonelectricalequipmentforpotentiallyexplosiveatmospheres Part8:Protectionbyliquid immersionk
32、. EN13478, SafetyofmachineryFirepreventionandprotection EN135011, FireclassificationofconstructionproductsandbuildingelementsPart1:Classificationusingtest datafromreactiontofiretests EN60529:1991, Degreesofprotectionprovidedbyenclosures(IPCode),(IEC60529:1989). 3 Termsanddefinitions Forthepurposesof
33、thisEuropeanStandard,thetermsanddefinitionsgiveninEN134631:2001,EN11271:1997 andEN11272:2002andthefollowingapply. 3.1 typeofprotectionconstructionalsafety“c“ typeofignitionprotectioninwhichconstructionalmeasuresareappliedsoastoprotectagainstthepossibilityof ignitionfromhotsurfaces,sparksandadiabatic
34、compressiongeneratedbymovingparts 3.2 mechanicalsparks sparks,aswellasshowersofsparks,producedbyimpactorfrictionbetweentwosimilarordissimilarsolidmaterials 4General 4.1 Determinationofsuitability Beforeadecisionismadetoprotectequipmentorpiecesofequipmentforuseasanassemblyincluding interconnectingpar
35、tsbythemeasuresdescribedinthisstandard,itshallhavebeensubjectedtotheignitionhazard assessmentinaccordancewithEN134631.Furthermore,Itshallalsohavebeendeterminedthat,byenhancingor increasingthesafetyofcertainvulnerableparts,therequiredlevelofprotectionisensuredagainstthepossibilityof ignitionsourcesoc
36、curring. Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jul 23 10:14:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN134635:2003(E) 6 4.2 Partsofequipment Allpartsandinterconnectingpartsofequipmentshallbecapableoffunctioninginconformitywiththeoperational parametersestab
37、lishedbythemanufacturerthroughouttheirforeseeablelifetimeandbesufficientlyfirmanddurable towithstandthemechanicalandthermalstressestowhichtheywillbesubjected. 4.3Ingress Protection 4.3.1General Thedegreeofingressprotection(IP)providedbytheouterenclosuresofequipmentdependsuponitsintended dutyandthety
38、peofenvironmentitisdesignedtobeusedin.Anappropriaterating,accordingtoIPcategory1,as specifiedin13.4ofEN60529:1991,shallbedeterminedaspartoftheignitionhazardassessment(see4.1)and shallbeabletopreventforeignobjectsorwaterenteringtheequipmentwhichcould: i) reducetheignitionleveltoalowervalue,byforexamp
39、le,allowingcombustibledust,withalower ignitiontemperaturethanthepotentiallyexplosiveatmosphere,toformalayeronhotinternal componentsorpartsoftheequipment;and/or ii) makecontactwithmovingparts,resultinginthecreationofapotentialignitionsource,unsafe malfunctionorfire. Thefollowingsubclauses,4.3.3to4.3.
40、5below,specifytheminimumdegreeofingressprotection(IP)forenclosures usedinthecircumstancesdescribed. 4.3.2 Inthecaseofequipmentintendedforuseingas/vapouratmospheres,whereentryofforeignobjectscan causeignition,butentryofdustisharmless,entryoffallingobjectsshallbeprevented. 4.3.3 Inthecaseofequipmentin
41、tendedforuseingas/vapouratmospheres,wheretheentryofdustsorliquids couldcausemalfunctionleadingtoanignitionsource,theenclosureshallbeatleastIP54. 4.3.4 Inthecaseofequipmentintendedforuseinpotentiallyexplosivedustatmospheres,whereingressofdust canresultinanignitionsourceorfire,theenclosureshallbeatlea
42、stIP6X. 4.3.5 Inthecaseofequipmentintendedforuseinpotentiallyexplosivedustatmospheres,whereingressofdust andforeignobjectsarenotlikelytocauseanignition,noenclosureisnecessary. NOTE Anenclosurecanberequiredforothersafetyreasons,e.g.IP2Xtopreventpartsofthebodycomingintocontact withrotatingparts. 4.4 S
43、ealsformovingparts 4.4.1 Unlubricatedgaskets,seals,sleeves,bellowsanddiaphragms Unlubricatedgaskets,seals,sleeves,bellowsanddiaphragmswhicharesubjecttorubbingcontactinnormal operationorduringforeseeablemalfunction,shallnotcontainlightmetals.Sleevesmadeofelastomericmaterial, PTFEorsimilarmaterial,gra
44、phiteandceramicsaresuitable. Nonmetallicmaterialsshallberesistanttodistortionanddegradationwithoutreducingtheeffectivenessofexplosion protection(seeEN134631). 4.4.2 Stuffingboxseals Stuffingboxsealsshallonlybeusedifatemperatureriseabovethemaximumsurfacetemperaturecanbeexcluded. NOTE Adevicetomonitortemperaturesandswitchoffequipmentshouldbe
