CHST Questions and Answers
Updated 2026
WhenAmustAaAhandrailAbeAaddedAtoAstairwell?A-
AAnswerAWhenAitAisA30AinchesAorAoneAhavingAfourAorAmoreArisers.
WhatAareAfourAconcernsAaACHSTAmustAaddressAregardingAunsafeAuseAofAladdersAandAstairw
ells?A-
AAnswerASlipperyAconditions,AhandrailsAonAspecificAtypes,AnotAusedAforAstorageAandAexamin
edAforAweakAstructure.
SpecificationsAstateAthatAscaffoldingAmustAbeAofAsufficentAstrengthAtoAholdAmoreAthanAhow
AmanyAtimesAitsAspecifiedAweight?A-AAnswerA4Atimes.
HowAoftenAshouldAropesAandAriggingAinAsuspensionAscaffoldingAbeAinspectedAforAdamage?A-
AAnswerAAtAtheAbeginningAandAduringAeachAshift.
HowAfarAfromAelectricalApowerAlinesAmustAaAscaffoldAbe?A-AAnswerA10Afeet
WhatAareAthreeAthingsAscaffoldsAmustAhave?A-
AAnswerAToeAboards,AguardrailsAandAmidArails.
HowAmanyAcatagoriesAdoesAanAMSDSAhave?A-AAnswerA16
WhatAisAtheAcheifAconcernAinAchoosingAtheAappropriateArespirator?A-
AAnswerAMaterialAhazardsApresentedAbyAtheAworksite.
WhatAtypeAofArespiratorAisAnotAgoodAforAworkersAwithAasthma?A-
AAnswerANegativeApressure.AWorkersAmedicalAconditionsAareAfactorsAinAchoosingArespirators.
WhatAareAtheAthreeAmainAfactorsAtoAconsiderAwhenAchoosingArespirators?A-
AAnswerA1.ATheAphysicalAconfigurationAofAtheAjobsite.A2.ATheAworkersAmedicalAconditions.A3
.AWorkerAcomfort.
WhatAdoesAMFFAstandAfor?A-AAnswerAMetalAFumeAFever.
, WhatAareAtheAsymptomsAofAMFF?A-AAnswerAResembleAclassicalAfluAsymptoms.
WeldersAwhoAworkAwithAhatAtendAtoAhaveAhigherAincidenceAofAMFF?A-AAnswerAZincAOxides
WhatAcanApreventAMFF?A-
AAnswerAWeldersAtoAwearArespiratorsAandAlocalAorAexhaustAventilationAcanAeffectAnearbyAw
orkers.
WhatAareAtheAsafeAoperatingAproceduresApertainingAtoAutlilityAandAserviceAlinesAwhenAaAbu
ildingAisAbeingApreparedAforAdemolitions.A-
AAnswerA1.AConductAsurveyAinspection.A2.ADocumentAspecificAhazards.A3.AEvaluateAutilityAfu
nctionsAservicingAtheAbuilding.
WhatAutliltiesAmustAbeAcuteAbeforeAdemolitionAbegins?A-
AAnswerAElectric,Awater,Agas,AsewerAandAanyAotherAservice.
WhatAshouldAtheAsurveyAreportAincludeAforAdemolition?A-
AAnswerAWhetherAthereAareAdangersAposedAtoAworkersAorAtheAenvironmentAlikeAchemicals,
Agases,Aexplosives,AflammablesAorAotherAhazardousAmaterialsAinAstorageAtanks.
WhenAcanAmaterialsAbeAdroppedAthroughAfloorAopenings?A-
AAnswerAWhenAtheAdropAareaAisAcompletelyAenclosedAandAbarricaded.ABarricadesAmustAbeA
atAleastA42AinchesAhighAandAnoAcloserAtoAtheAdropAareaAthanA6Afeet.
FromAwhichAheightAmustAaAchuteAbeAusedAwhenAremovingAwasteAformAupperAlevelsAofAbui
ldings?A-
AAnswerA20Afeet.ATheAchuteAcanAbeAmadeAofAwood,AalloyedAmetalAandAmustAbeAsecurelyA
anchored.
ShouldAglassAwindowsAbeAremovedAbeforeAdemolition?A-
AAnswerAYEs,AwhenAthereAareAconcernsAforAworkersAbeingAcutAbyAbrokenAglass.
WhatAdoesAexitAdischargeAmean?A-
AAnswerAItArefersAtoAanAexitAwhichAleadAdirectlyAtoAanAoutdoorAareaAorAstreet.
Updated 2026
WhenAmustAaAhandrailAbeAaddedAtoAstairwell?A-
AAnswerAWhenAitAisA30AinchesAorAoneAhavingAfourAorAmoreArisers.
WhatAareAfourAconcernsAaACHSTAmustAaddressAregardingAunsafeAuseAofAladdersAandAstairw
ells?A-
AAnswerASlipperyAconditions,AhandrailsAonAspecificAtypes,AnotAusedAforAstorageAandAexamin
edAforAweakAstructure.
SpecificationsAstateAthatAscaffoldingAmustAbeAofAsufficentAstrengthAtoAholdAmoreAthanAhow
AmanyAtimesAitsAspecifiedAweight?A-AAnswerA4Atimes.
HowAoftenAshouldAropesAandAriggingAinAsuspensionAscaffoldingAbeAinspectedAforAdamage?A-
AAnswerAAtAtheAbeginningAandAduringAeachAshift.
HowAfarAfromAelectricalApowerAlinesAmustAaAscaffoldAbe?A-AAnswerA10Afeet
WhatAareAthreeAthingsAscaffoldsAmustAhave?A-
AAnswerAToeAboards,AguardrailsAandAmidArails.
HowAmanyAcatagoriesAdoesAanAMSDSAhave?A-AAnswerA16
WhatAisAtheAcheifAconcernAinAchoosingAtheAappropriateArespirator?A-
AAnswerAMaterialAhazardsApresentedAbyAtheAworksite.
WhatAtypeAofArespiratorAisAnotAgoodAforAworkersAwithAasthma?A-
AAnswerANegativeApressure.AWorkersAmedicalAconditionsAareAfactorsAinAchoosingArespirators.
WhatAareAtheAthreeAmainAfactorsAtoAconsiderAwhenAchoosingArespirators?A-
AAnswerA1.ATheAphysicalAconfigurationAofAtheAjobsite.A2.ATheAworkersAmedicalAconditions.A3
.AWorkerAcomfort.
WhatAdoesAMFFAstandAfor?A-AAnswerAMetalAFumeAFever.
, WhatAareAtheAsymptomsAofAMFF?A-AAnswerAResembleAclassicalAfluAsymptoms.
WeldersAwhoAworkAwithAhatAtendAtoAhaveAhigherAincidenceAofAMFF?A-AAnswerAZincAOxides
WhatAcanApreventAMFF?A-
AAnswerAWeldersAtoAwearArespiratorsAandAlocalAorAexhaustAventilationAcanAeffectAnearbyAw
orkers.
WhatAareAtheAsafeAoperatingAproceduresApertainingAtoAutlilityAandAserviceAlinesAwhenAaAbu
ildingAisAbeingApreparedAforAdemolitions.A-
AAnswerA1.AConductAsurveyAinspection.A2.ADocumentAspecificAhazards.A3.AEvaluateAutilityAfu
nctionsAservicingAtheAbuilding.
WhatAutliltiesAmustAbeAcuteAbeforeAdemolitionAbegins?A-
AAnswerAElectric,Awater,Agas,AsewerAandAanyAotherAservice.
WhatAshouldAtheAsurveyAreportAincludeAforAdemolition?A-
AAnswerAWhetherAthereAareAdangersAposedAtoAworkersAorAtheAenvironmentAlikeAchemicals,
Agases,Aexplosives,AflammablesAorAotherAhazardousAmaterialsAinAstorageAtanks.
WhenAcanAmaterialsAbeAdroppedAthroughAfloorAopenings?A-
AAnswerAWhenAtheAdropAareaAisAcompletelyAenclosedAandAbarricaded.ABarricadesAmustAbeA
atAleastA42AinchesAhighAandAnoAcloserAtoAtheAdropAareaAthanA6Afeet.
FromAwhichAheightAmustAaAchuteAbeAusedAwhenAremovingAwasteAformAupperAlevelsAofAbui
ldings?A-
AAnswerA20Afeet.ATheAchuteAcanAbeAmadeAofAwood,AalloyedAmetalAandAmustAbeAsecurelyA
anchored.
ShouldAglassAwindowsAbeAremovedAbeforeAdemolition?A-
AAnswerAYEs,AwhenAthereAareAconcernsAforAworkersAbeingAcutAbyAbrokenAglass.
WhatAdoesAexitAdischargeAmean?A-
AAnswerAItArefersAtoAanAexitAwhichAleadAdirectlyAtoAanAoutdoorAareaAorAstreet.
