CLASS 5 BOILER EXAM QUESTIONS
WITH CORRECT ANSWERS 2026
AllUsafetyUreliefUvalvesUinstalledUonUpressureUequipmentUinUORUmustUbeU_________UapprovedU-
UCORRECTUANSWERS-ASME
SteamUtrapUdischargeUpipingUshallUbeUdesignedUtoUtheUsameU_______UunlessUitUisU__________UtoU
atmosphereU-UCORRECTUANSWERS-pressure,Uvented
WhichUofUtheUfollowingUisUnotUconsideredUaUtypeUofUweldU-UCORRECTUANSWERS-Fillet
T/FULowUandUhighUpressureUgasUswitchesUonlyUareUrequiredUonUboilersUofU12.5UmbtuUandUgreater.U
-UCORRECTUANSWERS-True
T/FUCombustionUairUrequirementsUareUnotUtheUresponsibilityUofUtheUboilerUinstallationUcontractor.
U-UCORRECTUANSWERS-False
T/FUBellUandUspigotUfittingsUmayUbeUusedUonUrefrigerationUservice.U-UCORRECTUANSWERS-False
T/FUAllUvalvesUandUcocksUwithUsteamUorUspindleUshallUhaveUadjustableUpressureUtypeUpackingUglan
dsUforUsteamUandUheatingUboilers.U-UCORRECTUANSWERS-True
T/FUYouUcanUrebuildUboilerUcontrols.U-UCORRECTUANSWERS-False
T/FUCombustionUairUprovingUcanUbeUcontrolledUbyUanUenergyUmanagementUsystem.U-
UCORRECTUANSWERS-False
, UnderUASMEUsecUIVUpartUHG400UsafetyUvalveUforUaU15lbUsteamUheatingUboilerUoverU15000UbtuUhe
atUinsputUshallUnotUbeUsmallerUthanU______UandUlargerUthanU______.U-UCORRECTUANSWERS-
1,U4U1/2UNPS
InUaUcompletedUgrooveUweld,UtheUtermUforUtheUsurfaceUofUtheUweldUonUtheUsideUfromUwhichUtheU
weldingUisUdoneUisUtheU_______U________.U-UCORRECTUANSWERS-weldUface
T/FUClassU5AUcertificateUholderUcanUinstallUeitherUASMEUB31.1UorUB31.5UpressureUpiping.U-
UCORRECTUANSWERS-False
T/FUBoilersUunderU400kUbtuUareUexemptUfromUtheUrequirementsUofUASMEUCSD-1U-
UCORRECTUANSWERS-False
T/FUPipeUfabricatedUinUtheUshopUneedsUtoUbeUinspectedUbyUyourUcompaniesUqualityUcontrolUmana
gerUbutUtheUboilerUinspectorUonlyUneedsUtoUseeUtheUpipingUonceUitUisUonUtheUjobUsite.U-
UCORRECTUANSWERS-True
WhatUclassUfireUisUfueledUbyUliquids?U-UCORRECTUANSWERS-ClassUB
AnUinstallationUpermitUwhichUhasUbeenUprocessedUthroughUtheUboilerUsectionUmust:U-
UCORRECTUANSWERS-
BeUobtainedUpriorUtoUstartingUworkUandUpostedUonUtheUsiteUpriorUtoUstartUofUwork
T/FUAllUautomaticallyUfiredUboilersUfromU12,500,000UbtuUorUlessUareUsubectedUtoUASMEUCSD.1U-
UCORRECTUANSWERS-True
DoublingUtheUsizeUofUpipeUincreasesUtheUcapacityUbyUhowUmanyUtimes?U-UCORRECTUANSWERS-
Four
WITH CORRECT ANSWERS 2026
AllUsafetyUreliefUvalvesUinstalledUonUpressureUequipmentUinUORUmustUbeU_________UapprovedU-
UCORRECTUANSWERS-ASME
SteamUtrapUdischargeUpipingUshallUbeUdesignedUtoUtheUsameU_______UunlessUitUisU__________UtoU
atmosphereU-UCORRECTUANSWERS-pressure,Uvented
WhichUofUtheUfollowingUisUnotUconsideredUaUtypeUofUweldU-UCORRECTUANSWERS-Fillet
T/FULowUandUhighUpressureUgasUswitchesUonlyUareUrequiredUonUboilersUofU12.5UmbtuUandUgreater.U
-UCORRECTUANSWERS-True
T/FUCombustionUairUrequirementsUareUnotUtheUresponsibilityUofUtheUboilerUinstallationUcontractor.
U-UCORRECTUANSWERS-False
T/FUBellUandUspigotUfittingsUmayUbeUusedUonUrefrigerationUservice.U-UCORRECTUANSWERS-False
T/FUAllUvalvesUandUcocksUwithUsteamUorUspindleUshallUhaveUadjustableUpressureUtypeUpackingUglan
dsUforUsteamUandUheatingUboilers.U-UCORRECTUANSWERS-True
T/FUYouUcanUrebuildUboilerUcontrols.U-UCORRECTUANSWERS-False
T/FUCombustionUairUprovingUcanUbeUcontrolledUbyUanUenergyUmanagementUsystem.U-
UCORRECTUANSWERS-False
, UnderUASMEUsecUIVUpartUHG400UsafetyUvalveUforUaU15lbUsteamUheatingUboilerUoverU15000UbtuUhe
atUinsputUshallUnotUbeUsmallerUthanU______UandUlargerUthanU______.U-UCORRECTUANSWERS-
1,U4U1/2UNPS
InUaUcompletedUgrooveUweld,UtheUtermUforUtheUsurfaceUofUtheUweldUonUtheUsideUfromUwhichUtheU
weldingUisUdoneUisUtheU_______U________.U-UCORRECTUANSWERS-weldUface
T/FUClassU5AUcertificateUholderUcanUinstallUeitherUASMEUB31.1UorUB31.5UpressureUpiping.U-
UCORRECTUANSWERS-False
T/FUBoilersUunderU400kUbtuUareUexemptUfromUtheUrequirementsUofUASMEUCSD-1U-
UCORRECTUANSWERS-False
T/FUPipeUfabricatedUinUtheUshopUneedsUtoUbeUinspectedUbyUyourUcompaniesUqualityUcontrolUmana
gerUbutUtheUboilerUinspectorUonlyUneedsUtoUseeUtheUpipingUonceUitUisUonUtheUjobUsite.U-
UCORRECTUANSWERS-True
WhatUclassUfireUisUfueledUbyUliquids?U-UCORRECTUANSWERS-ClassUB
AnUinstallationUpermitUwhichUhasUbeenUprocessedUthroughUtheUboilerUsectionUmust:U-
UCORRECTUANSWERS-
BeUobtainedUpriorUtoUstartingUworkUandUpostedUonUtheUsiteUpriorUtoUstartUofUwork
T/FUAllUautomaticallyUfiredUboilersUfromU12,500,000UbtuUorUlessUareUsubectedUtoUASMEUCSD.1U-
UCORRECTUANSWERS-True
DoublingUtheUsizeUofUpipeUincreasesUtheUcapacityUbyUhowUmanyUtimes?U-UCORRECTUANSWERS-
Four
