FDNY S-93 Questions and Answers 2025

FDNY S-93 Questions and Answers 2025
Site-specificApermitA-ACORRECTAANSWERSA-
authorizesAtheApermitAholderAtoAstore,AhandleAandAuseAflammableAand
combustibleAliquidsAatAaAspecificApremises
PermanentApermitA-ACORRECTAANSWERSA-validAforA12Amonths
only.AEveryApermitAorArenewalAshallArequireAanAinspectionAandAshallAexpireAafterAtwelve
months
TemporaryApermitA-ACORRECTAANSWERSA-
mayAbeAvalidAfromAoneAdayAtoA12AmonthsAdependingAonAthe
construction/operationAneeded.AForAexample,AaA3-monthAtemporaryApermitAmayAbe
issuedAtoAaAconstructionAsite.
citywideApermitA-ACORRECTAANSWERSA-isAvalidAtoAstore,Ahandle,Ause,AsellAor
transportAhazardousAmaterialsAorAtoAconductAanAoperationAatAoneAorAmoreAlocations
providedAtheAdurationAofAsuchAactivityAatAanyAindividualAlocationAdoesAnotAexceedA30Adays
.
aApermitAisArequiredAtoA-ACORRECTAANSWERSA-
ToAstore,AhandleAorAuseAamountsAofAClassAIAliquids,AotherAthanApaints,Avarnishes,
lacquers,AgasolineAandAotherApetroleum-basedAClassAIAliquids,AinAexcessAofA5Agallons,
exceptAthatAaApermitAisAnotArequiredAforAtheAstorageAorAuseAofAClassAIAliquidsAinAthe
fuelAtankAofAaAmotorAvehicle,Aaircraft,AorAwatercraft
aApermitAisArequiredAtoA-ACORRECTAANSWERSA-
store,AhandleAorAuseAamountsAofAgasolineAandAotherApetroleum-basedAClassAI
liquidsAotherAthanApaints,AvarnishesAandAlacquers,AinAexcessAofA2½Agallons,
permitAneededAtoA-ACORRECTAANSWERSA-
store,AhandleAorAuseAamountsAinAexcessAofA20AgallonsAofAClassAI,AClassAIIAor
ClassAIIIAliquidsAhavingAaAflashApointAofA300°FAorAlessAthatAareAcommonlyAusedAfor
painting,Avarnishing,AstainingAorAotherAsimilarApurposes,
permitArequiredA-ACORRECTAANSWERSA-
ToAstore,AhandleAorAuseAamountsAinAexcessAofA70AgallonsAofApetroleumAbased
ClassAIIIAliquidsAwithAaAflashApointAexceedingA300°F
flammableAliquidsA-ACORRECTAANSWERSA-ClassAIAA,AIAB,AandAIACAareAexamplesAof
CombustibleAliquidsA-ACORRECTAANSWERSA-ClassAII,AIIIAA,AIIIB
CARGOATANKA-ACORRECTAANSWERSA-
AAvehicleAotherAthanAaArailroadAtankAcarAorAmarineAvessel,AwithAaAtank
mountedAthereonAorAbuiltAasAanAintegralApartAthereof,AusedAforAtheAtransportationAof
flammableAorAcombustibleAliquids,ALPGAorAotherAhazardousAmaterials,AincludingAselfprope
lled
vehiclesAandAfullAtrailersAandAsemi-trailers,AwithAorAwithoutAmotiveApower,Aand
carryingApartAorAallAofAtheAload.
COMBUSTIBLEALIQUIDA-ACORRECTAANSWERSA-
ClassAII.ALiquidsAhavingAaAclosedAcupAflashApointAatAorAaboveA100°FA(38°C)AandAbelow
140°FA(60°C).
ClassAIIIA.ALiquidsAhavingAaAclosedAcupAflashApointAatAorAaboveA140°FA(60°C)Aand

, belowA200°FA(93°C).
ClassAIIIB.ALiquidsAhavingAclosedAcupAflashApointsAatAorAaboveA200°FA(93°C).
CONTAINER.A-ACORRECTAANSWERSA-
ForAsolidAandAliquidAhazardousAmaterials,AaAvesselAofA60AgallonsA(227AL)Aor
lessAinAcapacityAusedAforAstorageAorAtransportation.AForAcompressedAgases,AaAcylinder,
pressureAvesselAorAtankAdesignedAforApressuresAgreaterAthanAoneAatmosphereAatA68°F
(20ºC).
DISPENSINGA-ACORRECTAANSWERSA-
TheApouringAorAtransferringAbyAotherAmeansAofAanyAmaterialAfromAa
container,AtankAorAsimilarAvessel,AwhichAwouldAreleaseAdusts,Afumes,Amists,AvaporsAor
gasesAtoAtheAatmosphere,AunlessAsuchAreleaseAisApreventedAbyAaAdevice,AequipmentAor
systemAdesignedAforAthatApurpose
FLAMMABLEAANDACOMBUSTIBLEALIQUIDASTORAGEASYSTEMA-
ACORRECTAANSWERSA-AAflammableAor

combustibleAliquidAstorageAtankAandAallAdevices,AequipmentAandAsystemsAassociatedAwith
suchAtank,AincludingAtheAtank,Apiping,Avalves,AfillAconnection,AventAlines,ApumpsAandAany
otherAancillaryAequipment,AexceptAliquidAmotorAfuelAstorageAandAdispensingAsystemsAand
flammableAandAcombustibleAliquidAstorageAsystemsAatAaAbulkAplantAorAterminalAusedAfor
bulkAtransferAoperations.
FLAMMABLEALIQUIDA-ACORRECTAANSWERSA-
ClassAIA.ALiquidsAhavingAaAflashApointAbelowA73°FA(23°C)AandAhavingAaAboilingApoint
belowA100°FA(38°C).
ClassAIB.ALiquidsAhavingAaAflashApointAbelowA73°FA(23°C)AandAhavingAaAboilingApointAat
orAaboveA100°FA(38°C).
ClassAIC.ALiquidsAhavingAaAflashApointAatAorAaboveA73°FA(23°C)AandAbelowA100°FA(38°C).
FLASHAPOINTA-ACORRECTAANSWERSA-
TheAminimumAtemperatureAinAdegreesAFahrenheitAatAwhichAaAliquidAwill
giveAoffAsufficientAvaporsAtoAformAanAignitableAmixtureAwithAairAnearAtheAsurfaceAorAinAthe
container,AbutAwillAnotAsustainAcombustion
GENERALASUPERVISIONA-ACORRECTAANSWERSA-
SupervisionAbyAtheAholderAofAanyAdepartmentAcertificateAwho
isAresponsibleAforAperformingAtheAdutiesAofAtheAcertificateAholderAbutAneedAnotAbe
personallyApresentAonAtheApremisesAatAallAtimes
HANDLINGA-ACORRECTAANSWERSA-
TheAmovementAofAaAmaterialAinAitsAcontainer,AtheAremovalAofAtheAmaterial
fromAitsAcontainer,AorAanyAotherAactionAorAprocessAthatAmayAaffectAtheAmaterial,AotherAthan
itsAstorageAorAuse.
INCOMPATIBLEAMATERIALS.A-ACORRECTAANSWERSA-
MaterialsAthat,AifAmixedAorAcombined,AcouldAexplode,
generateAheat,AgasesAorAotherAbyproducts,AorAreactAinAaAwayAhazardousAtoAlifeAorAproperty
.
LIQUID.A-ACORRECTAANSWERSA-
AAmaterialAhavingAaAmeltingApointAthatAisAequalAtoAorAlessAthanA68°FA(20°C)AandAa
boilingApointAthatAisAgreaterAthanA68°FA(20°C)AatA14.7ApsiaA(101AkPa).
MATERIALASAFETYADATAASHEETA(MSDS).A-ACORRECTAANSWERSA-
AAdocumentApreparedAinAaccordanceAwith