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OccupationalSafetyandHealthStandards
•Subpart:
I
•SubpartTitle:
PersonalProtectiveEquipment
•StandardNumber:
1910.134AppA
•Title:
FitTestingProcedures（Mandatory）.
AppendixAto§
1910.134:
FitTestingProcedures（Mandatory）
PartI.OSHA-AcceptedFitTestProtocols
A.FitTestingProcedures--GeneralRequirements
Theemployershallconductfittestingusingthefollowingprocedures.TherequirementsinthisappendixapplytoallOSHA-acceptedfittestmethods,bothQLFTandQNFT.
1.Thetestsubjectshallbeallowedtopickthemostacceptablerespiratorfromasufficientnumberofrespiratormodelsandsizessothattherespiratorisacceptableto,andcorrectlyfits,theuser.
2.Priortotheselectionprocess,thetestsubjectshallbeshownhowtoputonarespirator,howitshouldbepositionedontheface,howtosetstraptensionandhowtodetermineanacceptablefit.Amirrorshallbeavailabletoassistthesubjectinevaluatingthefitandpositioningoftherespirator.Thisinstructionmaynotconstitutethesubject'
sformaltrainingonrespiratoruse,becauseitisonlyareview.
3.Thetestsubjectshallbeinformedthathe/sheisbeingaskedtoselecttherespiratorthatprovidesthemostacceptablefit.Eachrespiratorrepresentsadifferentsizeandshape,andiffittedandusedproperly,willprovideadequateprotection.
4.Thetestsubjectshallbeinstructedtoholdeachchosenfacepieceuptothefaceandeliminatethosethatobviouslydonotgiveanacceptablefit.
5.Themoreacceptablefacepiecesarenotedincasetheoneselectedprovesunacceptable;
themostcomfortablemaskisdonnedandwornatleastfiveminutestoassesscomfort.AssistanceinassessingcomfortcanbegivenbydiscussingthepointsinthefollowingitemA.6.Ifthetestsubjectisnotfamiliarwithusingaparticularrespirator,thetestsubjectshallbedirectedtodonthemaskseveraltimesandtoadjustthestrapseachtimetobecomeadeptatsettingpropertensiononthestraps.
6.Assessmentofcomfortshallincludeareviewofthefollowingpointswiththetestsubjectandallowingthetestsubjectadequatetimetodeterminethecomfortoftherespirator:
（a）Positionofthemaskonthenose
（b）Roomforeyeprotection
（c）Roomtotalk
（d）Positionofmaskonfaceandcheeks
7.Thefollowingcriteriashallbeusedtohelpdeterminetheadequacyoftherespiratorfit:
（a）Chinproperlyplaced;
（b）Adequatestraptension,notoverlytightened;
（c）Fitacrossnosebridge;
（d）Respiratorofpropersizetospandistancefromnosetochin;
（e）Tendencyofrespiratortoslip;
（f）Self-observationinmirrortoevaluatefitandrespiratorposition.
8.Thetestsubjectshallconductausersealcheck,eitherthenegativeandpositivepressuresealchecksdescribedinAppendixB-1ofthissectionorthoserecommendedbytherespiratormanufacturerwhichprovideequivalentprotectiontotheproceduresinAppendixB-1.Beforeconductingthenegativeandpositivepressurechecks,thesubjectshallbetoldtoseatthemaskonthefacebymovingtheheadfromside-to-sideandupanddownslowlywhiletakinginafewslowdeepbreaths.Anotherfacepieceshallbeselectedandretestedifthetestsubjectfailstheusersealchecktests.
9.Thetestshallnotbeconductedifthereisanyhairgrowthbetweentheskinandthefacepiecesealingsurface,suchasstubblebeardgrowth,beard,mustacheorsideburnswhichcrosstherespiratorsealingsurface.Anytypeofapparelwhichinterfereswithasatisfactoryfitshallbealteredorremoved.
10.Ifatestsubjectexhibitsdifficultyinbreathingduringthetests,sheorheshallbereferredtoaphysicianorotherlicensedhealthcareprofessional,asappropriate,todeterminewhetherthetestsubjectcanweararespiratorwhileperformingherorhisduties.
11.Iftheemployeefindsthefitoftherespiratorunacceptable,thetestsubjectshallbegiventheopportunitytoselectadifferentrespiratorandtoberetested.
12.Exerciseregimen.Priortothecommencementofthefittest,thetestsubjectshallbegivenadescriptionofthefittestandthetestsubject'
sresponsibilitiesduringthetestprocedure.Thedescriptionoftheprocessshallincludeadescriptionofthetestexercisesthatthesubjectwillbeperforming.Therespiratortobetestedshallbewornforatleast5minutesbeforethestartofthefittest.
13.Thefittestshallbeperformedwhilethetestsubjectiswearinganyapplicablesafetyequipmentthatmaybewornduringactualrespiratorusewhichcouldinterferewithrespiratorfit.
14.TestExercises.
（a）Employersmustperformthefollowingtestexercisesforallfittestingmethodsprescribedinthisappendix,exceptfortheCNPquantitativefittestingprotocolandtheCNPREDONquantitativefittestingprotocol.Forthesetwoprotocols,employersmustensurethatthetestsubjects（i.e.,employees）performtheexerciseprocedurespecifiedinPartI.C.4（b）ofthisappendixfortheCNPquantitativefittestingprotocol,ortheexerciseproceduredescribedinPartI.C.5（b）ofthisappendixfortheCNPREDONquantitativefit-testingprotocol.Fortheremainingfittestingmethods,employersmustensurethatemployeesperformthetestexercisesintheappropriatetestenvironmentinthefollowingmanner:
（1）Normalbreathing.Inanormalstandingposition,withouttalking,thesubjectshallbreathenormally.
（2）Deepbreathing.Inanormalstandingposition,thesubjectshallbreatheslowlyanddeeply,takingcautionsoasnottohyperventilate.
（3）Turningheadsidetoside.Standinginplace,thesubjectshallslowlyturnhis/herheadfromsidetosidebetweentheextremepositionsoneachside.Theheadshallbeheldateachextrememomentarilysothesubjectcaninhaleateachside.
（4）Movingheadupanddown.Standinginplace,thesubjectshallslowlymovehis/herheadupanddown.Thesubjectshallbeinstructedtoinhaleintheupposition（i.e.,whenlookingtowardtheceiling）.
（5）Talking.Thesubjectshalltalkoutloudslowlyandloudenoughsoastobeheardclearlybythetestconductor.ThesubjectcanreadfromapreparedtextsuchastheRainbowPassage,countbackwardfrom100,orreciteamemorizedpoemorsong.
RainbowPassage
Whenthesunlightstrikesraindropsintheair,theyactlikeaprismandformarainbow.Therainbowisadivisionofwhitelightintomanybeautifulcolors.Thesetaketheshapeofalongroundarch,withitspathhighabove,anditstwoendsapparentlybeyondthehorizon.Thereis,accordingtolegend,aboilingpotofgoldatoneend.Peoplelook,butnooneeverfindsit.Whenamanlooksforsomethingbeyondreach,hisfriendssayheislookingforthepotofgoldattheendoftherainbow.
（6）Grimace.Thetestsubjectshallgrimacebysmilingorfrowning.（ThisappliesonlytoQNFTtesting;
itisnotperformedforQLFT）
（7）Bendingover.Thetestsubjectshallbendatthewaistasifhe/sheweretotouchhis/hertoes.JogginginplaceshallbesubstitutedforthisexerciseinthosetestenvironmentssuchasshroudtypeQNFTorQLFTunitsthatdonotpermitbendingoveratthewaist.
（8）Normalbreathing.Sameasexercise
（1）.
（b）Eachtestexerciseshallbeperformedforoneminuteexceptforthegrimaceexercisewhichshallbeperformedfor15seconds.Thetestsubjectshallbequestionedbythetestconductorregardingthecomfortoftherespiratoruponcompletionoftheprotocol.Ifithasbecomeunacceptable,anothermodelofrespiratorshallbetried.Therespiratorshallnotbeadjustedoncethefittestexercisesbegin.Anyadjustmentvoidsthetest,andthefittestmustberepeated.
B.QualitativeFitTest（QLFT）Protocols
1.General
（a）TheemployershallensurethatpersonsadministeringQLFTareabletopreparetestsolutions,calibrateequipmentandperformtestsproperly,recognizeinvalidtests,andensurethattestequipmentisinproperworkingorder.
（b）TheemployershallensurethatQLFTequipmentiskeptcleanandwellmaintainedsoastooperatewithintheparametersforwhichitwasdesigned.
2.IsoamylAcetateProtocol
Note:
Thisprotocolisnotappropriatetouseforthefittestingofparticulaterespirators.Ifusedtofittestparticulaterespirators,therespiratormustbeequippedwithanorganicvaporfilter.
（a）OdorThresholdScreening
Odorthresholdscreening,performedwithoutwearingarespirator,isintendedtodetermineiftheindividualtestedcandetecttheodorofisoamylacetateatlowlevels.
（1）Three1literglassjarswithmetallidsarerequired.
（2）Odor-freewater（e.g.,distilledorspringwater）atapproximately25deg.C（77deg.F）shallbeusedforthesolutions.
（3）Theisoamylacetate（IAA）（alsoknownatisopentylacetate）stocksolutionispreparedbyadding1mlofpureIAAto800mlofodor-freewaterina1literjar,closingthelidandshakingfor30seconds.Anewsolutionshallbepreparedatleastweekly.
（4）Thescreeningtestshallbeconductedinaroomseparatefromtheroomusedforactualfittesting.Thetworoomsshallbewell-ventilatedtopreventtheodorofIAAfrombecomingevidentinthegeneralroomairwheretestingtakesplace.
（5）Theodortestsolutionispreparedinasecondjarbyplacing0.4mlofthestocksolutioninto500mlofodor-freewaterusingacleandropperorpipette.Thesolutionshallbeshakenfor30secondsandallowedtostandfortwotothreeminutessothattheIAAconcen
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