1、BRITISH STANDARD BS EN 352-1:2002 Hearing protectors General requirements Part 1: Ear-Muffs The European Standard EN 352-1:2002 has the status of a British Standard ICS 13.340.20 BS EN 352-1:2002 This British Standard, having been prepared under the direction of the Health and Environment Sector Pol
2、icy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 31 October 2002 BSI 31 October 2002 ISBN 0 580 40669 5 National foreword This British Standard is the official English language version of EN 352-1:2002. It supersedes BS EN 352-1:1993 whi
3、ch is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PH/7, Hearing protectors, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which imp
4、lement 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” facility of the BSI Electronic Catalogue or of British Standards Online. This publication d
5、oes 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. aid enquirers to understand the text; present to the responsible international/Europ
6、ean 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 This document comprises a front cover, an inside front cover, the EN title page, pag
7、es 2 to 15 and a back 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 EN3521 October2002 ICS13.340.20 SupersedesEN3521:1993 Englishversion He
8、aringprotectorsGeneralrequirementsPart1:EarMuffs ProtecteursindividuelscontrelebruitExigences gnralesPartie1:Serrette GehrschtzerAllgemeineAnforderungenTeil1: Kapselgehrschtzer ThisEuropeanStandardwasapprovedbyCENon18August2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichsti
9、pulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,Fren
10、ch,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,I
11、reland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved
12、 worldwideforCENnationalMembers. Ref.No.EN3521:2002EEN3521:2002(E) 2 Contents page Foreword3 Introduction .4 1 Scope 5 2 Normativereferences 5 3 Termsanddefinitions . 5 4 Requirements.6 4.1 Sizing.6 4.2 Materialsandconstruction 7 4.3 Performance7 5 Marking.9 6 Informationsuppliedbythemanufacturer .9
13、 6.1 General9 6.2 Wearerinformation 9 6.3 Additionalinformation 11 AnnexA (informative) Uncertaintyofmeasurementandinterpretationoftestresults12 AnnexZA (informative)ClausesofthisEuropeanstandardaddressingessentialrequirements orotherprovisionsofEUDirectives. 14 Bibliography 15EN3521:2002(E) 3 Forew
14、ord Thisdocument(EN3521:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC159,“Hearingprotectors“, thesecretariatofwhichisheldbySIS. ThisEuropeanStandard shallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyApril2003,andconflictingnationalstandardssh
15、allbewithdrawnatthelatestby April2003. ThisdocumentsupersedesEN3521:1993. ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropean FreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s). ForrelationshipwithEUDirective(s),seeinformativeannexZA,whichisanin
16、tegralpartofthisdocument. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portu
17、gal,Spain, Sweden,SwitzerlandandtheUnitedKingdom. AnnexAisinformative.EN3521:2002(E) 4 Introduction Thisstandardfor”HearingProtectorsGeneralrequirementsEarmuffs”,setsrequirementsforpersonalhearing protectiondevicesinrelationtoDirective89/686/EECPersonalProtectiveEquipment. Theparticularrequirementin
18、relationtotheabilityofhearingprotectorstoreducenoisebelowdailylimitlevelsis addressedinthestandardbyrequiringthesoundattenuationofthehearingprotectors,measuredinaccordance withEN248691,tobenotlessthanaspecifiedminimum.Further,byrequiringthatthemeasuredsound attenuationbedeclared,theselectionofsuitab
19、lehearingprotectorsforindividualcircumstancesmaybe undertakenaccordingtoestablishedpractice. EN3521dealswithrequirementsforearmuffs,EN3522withearplugs,EN3523withearmuffsattachedto industrialsafetyhelmets.EN13819dealswithtestingplanscommontoalltypesofhearingprotectorscoveredby thisseriesofENs,andisin
20、twoParts;Part1:Physicaltestmethods,andPart2:Acoustictestmethods. Additionalsafetyrequirementsandtheassociatedtestproceduresforleveldependentearmuffsarecontainedin EN3524,forearmuffswithactivenoisereductioninprEN3525,forearmuffswithaudiocommunicationsinprEN 3526andforleveldependentearplugsinprEN3527.
21、 ThePartsofEN352,otherthanParts1,2and3,covertheperformanceoffunctionsadditionaltopassivehearing protection.Hearingprotectorswhichincorporateoneormoreofthesefunctionsaresubjecttotherequirements andtestsofeachoftherelevantPartsofEN352,includingParts1,2or3,asappropriate. AnassociatedstandardEN458covers
22、selection,use,careandmaintenanceofhearingprotectors. Therequirementsofthestandardareconcernedprimarilywiththephysicalandacousticperformanceoftheear muffs. Thesizingrequirementsenablethegreatmajorityoftheindustrialpopulationtobefittedsatisfactorilyby”medium sizerange”earmuffs.Populationsofothersizesm
23、aybeaccommodatedby”smallsizerange”or”largesizerange” earmuffs,whicharerequiredtobeaccompaniedbyinformationregardingtherangeofsizeswhichtheyare designedtofit. Thestandardalsocallsforthevaluesofsoundattenuationaffordedbytheearmuffs(measuredinaccordancewith EN248691)inordertoassistpurchasersinselecting
24、themostappropriatemodelofearmuffsfortheirneeds. Minimumvaluesofsoundattenuationarealsospecified. Amaximumvariabilityininsertionloss,measuredobjectivelyafteraseriesofperformancetests,isspecified.The objectivetestmethodonlyfacilitatesthemakingofcomparativemeasurements,andtheinsertionlossvalues obtaine
25、dwilldifferfromthemeasuredsoundattenuationvalues. Thelatter,whichrequiretheearmufftobetestedwhilstbeingwornbyhumantestsubjects,isregardedas providingthereferencetestmethodforthemeasurementoftheacousticperformanceofhearingprotectorsEN3521:2002(E) 5 1Scope Thispartofthestandardspecifiesrequirementsfor
26、construction,design,performance,markinganduser informationforearmuffs. Inparticular,itspecifiesthesoundattenuationoftheearmuffs,measuredinaccordancewithEN248691. Thispartofthestandarddoesnotdealwithearmuffsforattachmenttoahelmetorwhicharepartofahelmet. Ergonomicaspectsareaddressedbytakingintoaccount
27、,withintherequirements,theinteractionbetweenthe wearer,thedeviceandwherepossibletheworkingenvironmentinwhichthedeviceislikelytobeused(seeAnnex ZAandEN458). 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecite
28、dattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(including
29、amendments). EN138191:2002 ,HearingprotectorsTestingPart1:Physicaltestmethods EN138192:2002 ,HearingprotectorsTestingPart2:Acoustictestmethods ENISO48692, AcousticsHearingprotectorsPart2:EstimationofeffectiveAweightedsoundpressurelevels whenhearingprotectorsareworn(ISO48692:1994) 3 Termsanddefinitio
30、ns ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply: 3.1 cup hollowcomponentwhichismountedontheequivalentheadbandandtowhichacushionandalinerareusually fitted 3.2 cushion deformablecomponent,usuallycontainingafoamplasticorfluidfilling,fittedtotherimofthecuptoimprovethe comfor
31、tandfitoftheearmuffsonthehead 3.3 liner acousticallyabsorptivematerialcontainedwithinthecupwhichisintendedtoincreasetheattenuationoftheear muffsatcertainfrequencies 3.4 earmuff hearingprotectorconsistingofacuptobepressedagainsteachpinnaorofacircumauralcuptobepressed againsttheheadaroundeachpinna.The
32、cupsmaybepressedagainsttheheadwithaheadbandorbymeansof adeviceattachedtoasafetyhelmetorotherequipment 3.4.1 overtheheadearmuff earmuffdesignedtobewornwiththeheadbandpassingoverthetopoftheheadEN3521:2002(E) 6 3.4.2 behindtheheadearmuff earmuffdesignedtobewornwiththeheadbandpassingbehindthehead 3.4.3
33、underthechinearmuff earmuffdesignedtobewornwiththeheadbandpassingunderthechin 3.4.4 universalearmuff earmuffdesignedtobewornasanoverthehead,abehindtheheadandanunderthechinearmuff 3.5 headband band,usuallyofmetalorplastics,designedtoenabletheearmuffstofitsecurelyaroundtheearsbyexertingforce againstth
34、ecupsandpressurethroughthecushions 3.6 headstrap flexiblestrapfittedtoeachcup,ortotheheadbandclosetothecup.Itisdesignedtosupportbehindtheheadand underthechinearmuffsbypassingover,andrestingontopof,thehead 3.7 insertionloss meanalgebraicdifferenceindecibelsbetweentheonethirdoctavebandsoundpressurelev
35、el,measuredbythe microphoneoftheacoustictestfixtureinaspecifiedsoundfieldunderspecifiedconditions,withthehearing protectorabsent,andthesoundpressurelevelwiththehearingprotectoron,withotherconditionsidentical 3.8 soundattenuation foragiventestsignal,themeandifferenceindecibelsbetweenthethresholdofhea
36、ringwithandwithoutthe hearingprotectorinplace,forapaneloftestsubjects 3.9 hygienecovers temporary,disposablecoversfittedoverthecushionsandintendedtoprotectthemfromtheeffectsofdirt, perspiration,cosmetics,etc 4Requirements 4.1Sizing Earmuffsshallbeclassifiedintothreesizeranges,Mediumsizerange,Smallsi
37、zerangeandLargesizerange. Mediumsizerangeearmuffsshallbesoclassifiediftheiradjustabilitycomplieswithclause4.3.2.2a)and4.3.2.2 b),asappropriate. Smallsizerangeearmuffsshallbesoclassifiediftheiradjustabilitycomplieswith4.3.2.3a)and4.3.2.3b),as appropriate. Largesizerangeearmuffsshallbesoclassifiedifth
38、eiradjustabilitycomplieswith4.3.2.4a)and4.3.2.4b),as appropriate. Smallsizerangeandlargesizerangeearmuffsshallbeaccompaniedbytheinformationspecifiedin6.2g). NOTE Amodelofearmuffsmayfallintomorethanonesizerange.EN3521:2002(E) 7 4.2 Materialsandconstruction 4.2.1 Materials 4.2.1.1Thosepartsoftheearmuf
39、fsthatmaycomeintocontactwiththeskinshallbenonstaining,soft,pliableand notknowntobelikelytocauseskinirritation,allergicreactionoranyotheradverseeffectonhealth. 4.2.1.2Allmaterialsshallbevisiblyunimpairedaftercleaninganddisinfectionbythemethodsspecifiedbythe manufacturer. 4.2.2Construction 4.2.2.1Allp
40、artsoftheearmuffsshallberounded,finishedsmoothandbefreefromsharpedges. 4.2.2.2Earmuffswhosecushionsand/orlinersareintendedbythemanufacturertobereplacedbythewearer shallnotrequiretheuseoftoolsforthispurpose. 4.2.2.3Alluniversalearmuffsthathaveamassinexcessof150gshallbeprovidedwithaheadstrap. 4.2.2.4E
41、armuffsthataresuitableforwearingonlyinthebehindtheheadorunderthechinmodes,andthathave amassinexcessof150g,shallbeprovidedwithaheadstrap. 4.3Performance 4.3.1General Therequirementsof4.3.2to4.3.12shallbesatisfied. EarmuffsshallbeconditionedandtestedinaccordancewithEN138191:2002,4.1.1,4.1.2and4.1.3. 4
42、.3.2 Sizingandadjustability 4.3.2.1General SizingandadjustabilityshallbetestedinaccordancewithEN138191:2002,4.2andthefollowingrequirements satisfied,asappropriate. Inthecaseofearmuffsincorporatingameanstoadjusttheheadbandforce,theserequirementsshallbesatisfied atboththemaximumandtheminimumforcesetti
43、ng. 4.3.2.2 Mediumsizerangeearmuffs a)Overtheheadearmuffs ForeachofthecombinationsoftestdimensionsshownbytheletterMinEN138191:2002,Table1,therangeof adjustmentofthecups/headbandandofthewidthbetweenthecushionsshallenabletheearmuffstobefittedto thefixture. b)Behindtheheadandunderthechinearmuffs ForeachofthecombinationsoftestdimensionsshownbytheletterMinEN138191:2002, Table2,therangeof adjustmentofthecups/
