1、BRITISH STANDARD BS EN 13274-3:2001 Respiratory protective devices Methods of test Part 3: Determination of breathing resistance The European Standard EN 13274-3:2001 has the status of a British Standard ICS 13.340.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 13274-
2、3:2001 This British Standard, having been prepared under the direction of the Health and Environment Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 07 November 2001 BSI 07 November 2001 ISBN 0 580 38618 X National foreword Th
3、is British Standard is the official English language version of EN 13274-3:2001. The UK participation in its preparation was entrusted by Technical Committee PH/4, Respiratory protection, to Subcommittee PH/4/9, Test methods and interpretation, which has the responsibility to: A list of organization
4、s represented on this subcommittee can be obtained 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 Standards Catalogue under the section entitled “International Standards C
5、orrespondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard doe
6、s not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and pr
7、omulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publ
8、ication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN132743 September2001 ICS13.340.30 Englishversion RespiratoryprotectivedevicesMethodsoftestPart3: Determinationofbreathingresistance AppareilsdeprotectionrespiratoireMthodesdessai Partie3:Dterminationdelarsistancerespirato
9、ire AtemschutzgertePrfverfahrenTeil3:Bestimmungdes Atemwiderstandes ThisEuropeanStandardwasapprovedbyCENon17August2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodateli
10、stsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguagea
11、ndnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITT
12、EEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN132743:2001EEN132743:2001(E) 2 Contents page Foreword3 Introduction .4 1
13、Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Prerequisites .4 5 Generaltestrequirements . .5 6 Method1:Staticbreathingresistance. 5 6.1 Principle5 6.2 Equipment.5 6.3 Procedure .5 6.3.1 Ambientconditions .5 6.3.2 Procedureforfilters. 5 6.3.3 Procedureforotherdevices . 6 7 Method2:Dyna
14、micbreathingresistance. 6 7.1 Principle6 7.2 Equipment.7 7.3 Procedure .7 7.3.1 General7 7.3.2 Inhalationresistance . 7 7.3.3 Exhalationresistance . .7 AnnexA (normative) Fittingprocedureforhoodswhichsealaroundtheneckandwhichmayormay notincorporateaheadharness . 13 A.1 Introduction 13 A.2 Principle1
15、3 A.3 Apparatus .13 A.3.1 Sheffielddummyhead/torso .13 A.3.2 Standandelasticstring,forhoodswhichdonotincorporateaheadharness 13 A.3.3 Adjustablecollar . .13 A.4 Procedure .14 AnnexB (normative) TestresultsUncertaintyofmeasurement17 AnnexZA (informative) ClausesofthisEuropeanStandardaddressingessenti
16、alrequirementsorother provisionsofEUDirectives. . 18EN132743:2001(E) 3 Foreword ThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeCEN/TC79,“Respiratoryprotectivedevices“, thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenti
17、caltextor byendorsement,atthelatestbyMarch2002,andconflictingnationalstandardsshallbewithdrawnatthelatestby March2002. ThisEuropeanStandardhasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandthe EuropeanFreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s). Forrelationshi
18、pwithEUDirective(s),seeinformativeannexZA,whichisanintegralpartofthisstandard. EN132743isoneofseveralParts,whichareasfollows: Part1:Determinationofinwardleakageandtotalinwardleakage Part2:Practicalperformancetests Part3:Determinationofbreathingresistance Part4: Flametests Part5:Climaticconditions Pa
19、rt6:Determinationofcarbondioxidecontentofinhalationair Part7:Determinationofaerosolpenetrationofparticlefilters Part8:Determinationofdolomitedustcloggingofparticlefilters TheannexesAandBarenormative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countri
20、esareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden, SwitzerlandandtheUnitedKingdom.EN132743:2001(E) 4 Introduction ThisEuropeanStandardisintendedasasupplementtothespe
21、cificdevicestandardsforrespiratoryprotective devices.Testmethodsarespecifiedforcompleteorpartsofdevices.Ifdeviationsfromthetestmethodgivenin thisstandardarenecessary,thesedeviationswillbespecifiedintherelevantdevicestandard. 1Scope ThisEuropeanStandardspecifiesthegeneralprocedureformeasurementofbrea
22、thingresistanceoffiltersfor respiratoryprotectivedevicesandrespiratoryprotectivedevicesincorporatingfacepieces,exceptfordivingfor respiratoryprotectivedevices.Therequirementsandanyspecialconditionsfortheapparatus,andoffilter measurementsaredescribedintherelevantdevicestandard. 2 Normativereferences
23、ThisEuropeanStandardincorporates,bydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentsto,orrevisionsofanyofthesepublicationsapplytothisEuropean Standardo
24、nlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN132, RespiratoryprotectivedevicesDefinitions. 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thedefinitionsgiveninEN132apply,togetherwiththefollowin
25、g: 3.1 inhalationresistance flowresistanceofthedeviceduringinhalation 3.2 exhalationresistance flowresistanceofthedeviceduringexhalation 3.3 staticbreathingresistance inhalationresistanceorexhalationresistanceatdefinedconstantflowexpressedasapressuredifference measuredbetweenambientandaspecifiedpoin
26、twithinthedevice 3.4 dynamicbreathingresistance peakinhalationresistanceorpeakexhalationresistanceatadefinedsinusoidalflowexpressedasapressure differencemeasuredbetweenambientandaspecifiedpointwithinthedevice 4Prerequisites InordertoimplementthisEuropeanStandard,atleastthefollowingparametersshallbes
27、pecifiedintherelevant devicestandard: numberofspecimens; specimenpreconditioning;EN132743:2001(E) 5 whichtestmethod(1or2); mountingofthespecimen; preparationofthespecimen; whichflowrates; deviations; numberofrepeattestsperspecimen; sizeoffacepiece; orientationofsupportfordevice; pass/fail criteria.
28、5 Generaltestrequirements Unlessotherwisespecified,thevaluesstatedinthisEuropeanStandardareexpressedasnominalvalues.Exceptfor temperaturelimits,valueswhicharenotstatedasmaximaorminimashallbesubjecttoalimitdeviationof+5%. Unlessotherwisespecified,theambienttemperaturefortestingshallbebetween16Cand32C
29、andthetemperature limitsshallbesubjecttoalimitdeviationof+1C. 6 Method1:Staticbreathingresistance 6.1Principle Thedeviceismountedonasupportasdescribedintherelevantdevicestandard,andairispassedthroughthe deviceataconstantflow. NOTE Theconventionofreportingbreathingresistanceisthatifduringtheinhalatio
30、nresistancetest,thepressureinsidethe facepiecerelativetoatmosphereisnegative,nosignisusedinfrontoftheresult.Iftherelativepressureinsidethefacep ieceis positive,theresultisprefixedwitha+. 6.2Equipment 6.2.1 Pressuregauge,calibratedintheappropriaterangeandwithasensitivitybetterthan10%ofthelimitvalue o
31、fbreathingresistancespecifiedintherelevantdevicestandard. 6.2.2 Flowmeter(s)calibratedintheappropriaterange. 6.2.3 Regulatedblower/compressedairsourceoravariablesuctiondevice. 6.2.4 Supportforthedevice(e.g.filterholder,Sheffielddummyheadwithinsertortorsowithinsert)asdescribed intherelevantdevice sta
32、ndard. 6.3Procedure 6.3.1Ambient conditions Ifambientconditionsdifferfrom23Cand1barabsolute,allflowratesshallbeadjustedsothattheygivethe correctflowratewhencorrectedto23Cand1barabsolute. 6.3.2 Procedureforfilters TwomethodsofpassingairthroughthefilterarepossibleandtypicalexamplesareshowninFigures1a)
33、and1b). Thefirstmethodemploysachamberinwhichthefilterholdingdeviceisfixed(seeFigure1a).AirisdirectedintoEN132743:2001(E) 6 thechamberfromasuitablecontrolledsourceandexitsthroughthefilterandholdersystem.Thepressuredrop acrossthesystemtoambientismeasuredatapressuretappingmountedonthechamberwall.Thesec
34、ond methoddrawsairthroughthefilterholdingdevice(seeFigure1b)andthepressuredropismeasuredbetween ambientandapressureportfittedatasuitablepointbetweenthefilterholdingsystemandtheconnectiontothe suctiondevice. Ensurethatthefilterhasbeenpreconditionedaccordingtothe relevantdevicestandardandthatanequipme
35、nt connectorortheholderintendedbythemanufacturertobeusedisavailable. MountthefilterinaleaktightmannerforhorizontalairflowasindicatedinFigures1a)or1b).Passtheappropriate airflowthroughthefilterholdingsystem.Measureandrecordthepressuredrop, P F ,acrossthefilterholding system Removethefilter.Passthesam
36、eairflowthroughthefilterholdingsystem.Measureandrecordthepressuredrop, P H ,ofthesetup. Reportthebreathingresistanceofthefilterattheflowrateas: P F P H 6.3.3 Procedureforotherdevices Ensurethatthedevicehasbeenpreconditionedaccordingtotherelevantdevicestandard. Fitthedeviceinaleaktightmannerwithoutde
37、formationontheSheffielddummyhead(seeFigure2)ortorso(see Figure3).Closeoffthetubeforexhalationair,andthepressureportontheexhalationtubeshowninFigure3.See alsoFigure4. Forhoodsfittingaroundtheneck,thefittingproceduregiveninannexA(seeFigureA.1)shallbeused. Formeasurementsofinhalationresistance,connectt
38、heinhalationtubetoasuitablesuctiondeviceandthe pressuregaugeconnectionstothepressureportandambientrespectively.Notethe“zero“reading.Switchonand adjustthesuctiondevicetogivetheappropriateflowandnotethepressurereading.Recordthereading,corrected forthe“zero“reading,astheinhalationresistance. Formeasure
39、mentsofexhalationresistance,connecttheexhalationtubetoasuitableblowerandthepressure gaugeconnectionstothepressureportandambientrespectively.Notethe“zero“reading.Withthesupportinone ofthefivedefinedorientations, a) uprightandfacingdirectlyahead; b) facingvertically,upwards; c) facingvertically,downwa
40、rds; d) lyingontheleftside; e) lyingontherightside; switchonandadjusttheblowertogivetheappropriateflowandnotethepressurereading.Recordthereading, correctedforthe“zero“reading,asthebreathingresistanceonexhalationatthatorientation.Repeattheprocedure withthesupportsuccessivelyplacedintheotherorientatio
41、ns.Reportthehighestvalueofthefiveresultsasthe exhalationresistance. 7 Method2:Dynamicbreathingresistance 7.1Principle Thedeviceismountedonasupportasdescribedintherelevantdevicestandardandconnectedtoabreathing machineadjustedtoaspecifiedbreathingminutevolume.EN132743:2001(E) 7 NOTE Theconventionofrep
42、ortingbreathingresistanceisthatifduringtheinhalationresistancetest,thepressureinside thefacepiecerelativetoatmosphereisnegative,nosignisusedinfrontoftheresult.Iftherelativepressureinsidethe facepieceispositive,theresultisprefixedwitha+. 7.2Equipment 7.2.1 Breathingmachineperformingsinusoidalbreathin
43、g. 7.2.2 Supportasdescribedintherelevantdevicestandard,e.g.Sheffielddummyheadwithinsertortorsowith insert(seeFigures2,3and4). 7.2.3 Pressuregauge,calibratedintheappropriaterangeandwithasensitivitybetterthan10%ofthelimitvalue ofbreathingresistancespecifiedintherelevantdevicestandard. Theresponsetimeofthispressuregauge,includingtherecordingdevice,shallbelessthan30ms.foraresponse of10%to90%ofthefullscaledeflectionoftherangeused. 7.3Procedure 7.3.1General Ifambientconditionsdifferfrom23Cand1barabsolute,allflowratesshallbeadjustedsothattheygivethe correctflowratewhencorrectedto23
