1、BRITISH STANDARD BS EN 13949:2003 Respiratory equipment Open-circuit self-contained diving apparatus for use with compressed Nitrox and oxygen Requirements, testing, marking The European Standard EN 13949:2003 has the status of a British Standard ICS 13.340.30 BS EN 13949:2003 This British Standard
2、was published under the authority of the Standards Policy and Strategy Committee on 5 March 2003 BSI 5 March 2003 ISBN 0 580 41368 3 National foreword This British Standard is the official English language version of EN 13949:2003. The UK participation in its preparation was entrusted by Technical C
3、ommittee PH/4, Respiratory protection, to Subcommittee PH/4/7, Underwater breathing apparatus, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international o
4、r 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” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to inc
5、lude 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. aid enquirers to understand the text; present to the responsible international/European committee any enqu
6、iries 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 This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 11 and a back
7、cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13949 February2003 ICS13.340.30 Englishversion RespiratoryequipmentOpencircuitselfcontained
8、diving apparatusforusewithcompressedNitroxandoxygen Requirements,testing,marking AppareilsrespiratoiresAppareilsdeplongeautonomes circuitouvertpouruneutilisationauNitroxetloxygne Exigences,essai,marquage AtemgerteAutonomeLeichttauchgertemitNitrox GasgemischundSauerstoffAnforderungen,Prfung, Kennzeic
9、hnung ThisEuropeanStandardwasapprovedbyCENon21November2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational stand
10、ardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe officia
11、l versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,SlovakRepublic,Spain,Sweden,Switzerland and UnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUR
12、OPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN13949:2003EEN13949:2003(E) 2 Contents page Foreword3 Introduction .4 1 Scope 4 2 Normativereferences 4
13、 3 TermsandDefinitions . 4 4 Requirements .5 4.1 General5 4.2 Materialsanddesign .5 4.2.1 Oxygencompatibility .5 4.2.2 Oxygencleanliness 5 4.3 Pressurevessel(s) .5 4.4 Pressurevesselvalve(s) .5 4.5 Highpressuregaugehose 6 5 Testing 6 5.1 General6 5.2 Oxygenpressuresurgetest .6 6 Marking .7 7 Informa
14、tionsuppliedbythemanufacturer 7 AnnexZA (informative) ClausesofthisEuropeanStandardaddressingessentialrequirementsorother provisionsofEUDirectives. . 10EN 13949:2003 (E) 3 Foreword This document (EN 13949:2003) has been prepared by Technical Committee CEN /TC 79 “Respiratory protective devices“, the
15、 secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2003, and conflicting national standards shall be withdrawn at the latest by August 2003. This document
16、 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document. If this draft becom
17、es a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. According to the CEN/CENELEC Internal Regulations, the national standards organ
18、izations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland and the Unit
19、ed Kingdom.EN13949:2003(E) 4 Introduction AgivenselfcontainedopencircuitcompressedNitroxoroxygenunderwaterbreathingapparatuscanonlybe approvedwhentheindividualcomponentssatisfytherequirementsofthetestspecificationwhichcanbea completestandardorpartofastandard,andpracticalperformancetestshavebeencarri
20、edoutsuccessfullyon completeapparatuswherespecifiedintheappropriatestandard.Ifforanyreasonacompleteapparatusisnot testedthensimulationoftheapparatusispermittedprovidedtherespiratorycharacteristicsaresimilartothoseof thecompleteapparatus. 1Scope ThisEuropeanStandardappliestoselfcontainedopencircuitco
21、mpressedNitroxgas(oxygencontentgreaterthan 22%)oroxygenunderwaterbreathingapparatus(NitroxSCUBA). ThisEuropeanStandarddefinesadditionalrequirements,exceptionsandtestsforNitroxoroxygenSCUBAto thosealreadygiveninEN250. TheobjectoftherequirementsandtestssetoutinthisEuropeanStandardistoensureaminimumlev
22、elofsafe operationfortheapparatus. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisio
23、nsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN132:1998, RespiratoryprotectivedevicesDefinitionsoftermsandpictograms EN1441, Respiratoryprotectivedevice
24、sGascylindervalvesPart1:Threadconnectionsforinsertconnector EN1443, RespiratoryprotectivedevicesGascylindervalvesPart3:OutletconnectionsfordivinggasesNitrox andoxygen EN250:2000, RespiratoryequipmentOpencircuitselfcontainedcompressedairdivingapparatus Requirements,testing,marking 3 TermsandDefinitio
25、ns ForthepurposesofthisEuropeanStandardthetermsanddefinitionsgiveninEN132:1998togetherwiththe followingapply: 3.1 opencircuitselfcontainedcompressedNitroxoroxygenunderwaterbreathingapparatus apparatuswhichhasaportablesupplyofcompressedNitroxandOxygencarriedbythediver,allowinghimto breatheunderwatera
26、ndexhaleintotheambientwater Theapparatus,whenreadytouse,consistsofanumberofcompatiblesubassemblieseachofwhichcomplies withtherequirementsofthisstandard.Whenconnectedtogether,thecompleteapparatusisdesignedtoenable thewearertobreatheNitroxandOxygenondemandfromhighpressurevessel(s)viaademandregulatorEN
27、13949:2003(E) 5 connectedtoafacepiece.Theexhaledgasespass,withoutrecirculation,fromthedemandregulatorviathe exhalationvalvetoambientwater. 3.2 Nitrox breathinggasmixtureofnitrogenandmorethan22%oxygen,alsoreferredtoasOxyNitrogen 3.3 highpressure pressureinsidethegaspressurevessel(s) 4Requirements 4.1
28、General TheapparatusshallfulfilallrequirementsofEN250:2000withtheexceptionof5.3and5.4ofEN250:2000. 4.2 Materialsanddesign 4.2.1 Oxygencompatibility Thematerialsandthedesignofhighpressuresubassembliesexcludingthepressurevessel(s)shallbe100% oxygenadiabaticcompressionresistant. Testingshallbedoneinacc
29、ordancewith5.2. 4.2.2 Oxygencleanliness Allsubassembliesshallbecleanedforoxygenuseandidentifiedassuch. Testingshallbedoneinaccordancewith5.2. 4.3Pressure vessel(s) Thepressurevessel(s)shallcomplywithappropriatenationalorEuropeanregulationsandshallbeapprovedand testedwithrespecttotheratedworkingpress
30、ureandtheuseofpureoxygen. Thepressurevessel(s)shallbemarkedwiththeappropriateneckthreaddesignationaccordingtoEN1441. Thethreadsforconnectingthepressurevessel(s)andthevalve(s)shallbeM18x1,5orM25x2asspecifiedin EN1441. Testingshallbedoneinaccordancewith6.2ofEN250:2000. 4.4 Pressurevesselvalve(s) Press
31、urevesselvalve(s)shallcomplywithappropriatenationalorEuropeanRegulationsandshallbeapproved andtestedforuseattheratedworkingpressureandpureoxygen. Thethreadsforconnectingthepressurevessel(s)andthevalve(s)shallbeM18x1,5orM25x2asspecifiedin EN1441. Safeconnectionbetweenthepressurevesselvalve(s)andthede
32、mandregulatorshallbeensuredbyusingthe connectionsasdefinedinEN1443.EN13949:2003(E) 6 Thevalve(s)shallbemarkedwiththeneckthreadandtheoutletthreaddesignationaccordingtoEN1441andEN 1443. Thevalve(s)shallbesodesignedorsolocatedthatitcannotbeclosedinadvertently.Thisismete.g.byatleast2 turnsfromfullyopent
33、ofullyclosedposition. Thefunctionofthepressurevesselvalve(s)shallnotbeimpairedbytheingressofwater. Thepressurevesselvalve(s)shallbeprotectedagainsttheentrainmentofdirt,solidparticlesandwaterfrominside thepressurevessel(s)forexamplebymeansofaprotectivetubewithalengthofatleast30mmandaninside diametero
34、fatleast2,5mm.Ifprovided,anadditionalsinteredmetalfiltershallhaveasurfaceareaofatleast900 mm 2 andbereliablyconnectedtotheprotectivetube. Testingshallbedoneinaccordancewith6.2ofEN250:2000,6.11ofEN250:2000and5.2. Thepressuredropmeasuredacrossthecompletepressurevesselvalve(s)assemblywithapressurevesse
35、l pressureof50barshallnotexceed10bar. Testingshallbedoneinaccordancewith6.7ofEN250:2000. 4.5 Highpressuregaugehose Thedesignofthehighpressurehoseinletshallmitigatethecompressiveheatignitionhazardtothehosematerial. Thehosematerialshallbeoxygencompatible. 5Testing 5.1General Unlessotherwisespecified,t
36、estingshallbecarriedoutwithcompressedairinaccordancewithEN250. 5.2 Oxygenpressuresurgetest Thistestshallbecarriedoutforallsubassembliesexposedtothehighpressuregas.Thetestshallbecarriedout withpureoxygen. Thepurposeofthetestistocheckwhetherthesedeviceswithstandanoxygenpressuresurgesafely. Thesamplede
37、vicesinthe“asreceived“condition,orlubricated,ifalubricantisusedforsuchadevice,shallbe tested. Beforethetest,theignitiontestinstallationshallbecheckedfortherequiredpressurerise(forexamplesofthetest installationandpressurecyclespecification,seefigures1and2).Forthispurposethesampledevice,attheendof the
38、1mlengthofcoppertube,isreplacedbyareliablepressuregauge. Themaximumpressureatthedeadendofthecoppertube(measuredbypressuregaugeandrecordedonan oscilloscope)shallbeachievedwithin(20 5)ms(timenecessarytoreachp vt startingfromatmosphericpressure). Thetestpressure(p vt )shallbe1,20timesoftheratedworkingp
39、ressure Stabilizationtimeatp vt isnotfixedbutshallbegreaterthanorequal3s.Beforethenextpressuresurgethesystem (sampledeviceandcoppertube)shallbedepressuriseddowntoatmosphericpressure.Stabilizationtimeat atmosphericpressureisnotfixedbutshallbegreaterthanorequal3s. Thetotaltimeofthepressurecycleshallbe
40、30s,asillustratedinfigure2,totaltimeisthetimebetweenthe beginningoftwoconsecutivepressuresurges. Forcalibrationpurposes,heatedoxygenat(60 3)Cshallbeused.EN13949:2003(E) 7 Thequalityofoxygenshallbe: minimumpurity99,5%byvolume; hydrocarboncontent10*10 6 ppm. Eachtestshallbecarriedoutasfollows: supplyo
41、xygenatatemperatureof(60 3)C,directlyintotheconnectionofthedevicetobetested,by meansofacoppertubehavinganinternaldiameterof5mmandalengthof1m.Thespecifiedmaterialand dimensionsofthetubeareessentialinordertoensurethatawelldefinedenergyinputintothedevicetobe testedisachieved; twotestsequencesshallbecar
42、riedoutonthepressurevesselvalve(s).Oneintheclosedpositionaandone intheopenposition.Thetestshallbemadeinsuchawaytosimulatepressurevesselfillingandthepressure vesselconnectionofshallbesealedwithasuitablemetallicclosure; onlyonetestshallbecarriedoutontheothersubassemblies.Thedirectionofthegasflowshallb
43、ethesame asinnormaluse; asinnormaluse; oxygenisheatedupto(60 3)C,intheoxygenpreheater.Inletofoxygen,tothesampledeviceis controlledbyaquickopeningvalve(seefigure1).Thetestconsistsofsubjectingthepressurevesselvalvesto 50pressurecyclesandtheothersubassembliesto20cycles,fromatmosphericpressuretothedevicetest pressure(p vt )(seefigure2); Afterthetests,thesampledeviceshallbedismantledandcarefullychecked,includingcloseexaminationofnon metalliccomponents.Itshallnotshowanytracesofignition. 6Marking TheapparatussubassembliesshallbemarkedinaccordancewithEN250. Additionally,thefollowi
