IAAI CFI Study Questions (2025)

IAAI CFI Study Questions (2025)



1. CombustibleLiquid:AliquidwithaflashpointABOVE100F ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




2. 12.5:Ifthe currentflowing outfroman electrical panel is12.5amps,and itthen
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flowsthroughanelectricalloadof1500 watts,whatistheamperageofthe
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remaining currentflowofthe return circuit?
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3. 1000:Ifa hairdryerdraws8.3amps(inahomewith120-voltservice),whatisthe
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




wattage?
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*Power(P)=current(I)xvoltage(V)Watts
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=ampsxvolts
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4. 1987:TheyearofthefirsteditionofNFPA1033 ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




5. 1.5times:Therecommendeddistanceforsecuringtheperimeterofablastscene
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*Thatis,thedistancefromthefurthestdebris
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6. 1100°F:Whattemperatureintheuppergaslayercausestheonsetof ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




Flashover?
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7. 1960°F:Thetemperatureatwhichcoppermelts ‘ ‘ ‘ ‘ ‘ ‘




8. 2 W/cm2: The measurement of the radiant heat flux (from gas layer to the floor)
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




thatindicates theonsetofflashover
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9. 240 volts: The voltage between the two hot wires at the service entrance cables
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




in most single-familyresidences in the United States (single-phase service with
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




three wires)
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10. 3years:TherevisioncycleforNFPA921(timespan)
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11. 350°F:Theflashpointofpowersteeringfluid ‘ ‘ ‘ ‘ ‘ ‘ ‘




12. 35-70p.s.i.:Inhigh-pressurefuel-injectedvehicles,thisisthetypicalrangeof
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




pressure thatisused to pump fuelfrom a fuel tank
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13. 5and17:Thelowerexplosiveandupperexplosivelimitofnaturalgas
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




(methane)?
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14. 680°F:Theignitiontemperatureofpowersteeringfluid ‘ ‘ ‘ ‘ ‘ ‘ ‘




15. Fuel:Anysubstancethatcanundergocombustion ‘ ‘ ‘ ‘ ‘ ‘




16. ActorOmission:Twofactorsorsituationsleadingtoafirethatmayshowthe nature of
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




the incidentresponsibility.
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17. AdditionalInvestigativeRecommendations:Thisconceptshouldnotbe ‘ ‘ ‘ ‘ ‘ ‘ ‘




included in a summaryreportoffindings.
‘ ‘ ‘ ‘ ‘ ‘ ‘




18. AdmiraltyLaw:Alawthatmaygovernthefireinvestigationofaboat ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




‘ ‘

, .

19. After-marketEquipment:Atypeofdeviceinavehicle,whichcancausean ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




electrical overload to factoryinstalled wiring
‘ ‘ ‘ ‘ ‘ ‘




20. Alive andBreathing:Evidence ofsmoke orsootin the lungs,bronchi,and trachea
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




isoneofthemostsignificantfactorsinconfirmingthat,atthetimeofthe fire,the
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




victim wasWHAT? ‘ ‘ ‘




21 AllTeamMembers:Thosewhohavetheresponsibilityformonitoring safetycondition
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




atthe fire orexplosion scene
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22. 1220°F:Themeltingtemperatureofaluminum ‘ ‘ ‘ ‘ ‘




23. Aluminum-to-pavementsparks:WhichoneoftheseisNOTconsidereda ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




competentignition source? Metal-to-metalsparks,
‘ ‘ ‘ ‘ ‘




Aluminum-to-pavementsparks, ‘




Metal-to-pavementsparks,
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Motor bearing sparks
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24. HeatReleaseRate:Ameaningfulanalysisofafirerequiresanunderstanding ofthe
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




fire growth,the total heatreleased,and WHAT?
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25. Arc-faultcircuitinterrupter:WhatdoeshetermAFCIstandfor?And,the"A" ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




specifically representswhat?
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26. ASTM:Theorganizationthatdevelopsstandardmethodsfortestingmaterials ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




27. Auto-ignition:Initiationofcombustionbyheatbutwithoutasparkorflame ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




28. Backdraft:Adeflagrationresultingfromthesuddenintroduction ofairinto a ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




confined space containing oxygen-deficientproductsofincomplete combustion
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




29.Backdraft:An explosion caused bya combination ofcombustiblematerials
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




heatedtotheignitionpointandasuddenintroductionofoxygen to support
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




combustion ‘




30. BackfireFlameArrestor:Aboatdevicethatownersfailtokeepclean,which isa ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




frequentcause ofengine compartmentfireson boats
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




31. Ballast:Adeviceonafluorescentlightfixturethattransformsthevoltagefrom normal ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




household voltage to a higher voltage
‘ ‘ ‘ ‘ ‘ ‘




32. Battery:Thestartermotordrawsitsenergyfromthissource ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




33. BeyondaReasonableDoubt:Theburdenofproofinacriminaltrial ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




34. BimetallicThermostats:Thecomponentthatcontrolstemperatureinmany ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




heat-producing appliances
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35. BLEVE:Thismayoccurwhenthevaporpressureofaliquidexceeds ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




atmospheric pressure
‘ ‘




*Andthisisthemostcommonmechanicalexplosion
‘ ‘ ‘ ‘ ‘ ‘ ‘




‘ ‘

, .

36. BoilingPoint:Thetemperatureorpointatwhichthevaporpressureofa liquid ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




equalsthe external pressure applied
‘ ‘ ‘ ‘ ‘




37. Bonding: The processofelectrically connecting two or more conductive objects ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




38.BottomPassengerSideoftheWindshield: Mostenginefirestypically
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




penetrate the interior compartmentatthislocation ofthe vehicle
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




39.BrassProngs(maleends):Aninvestigatorcancloselyexaminethiscomponentofa
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




cord to determine ifitwasplugged into a receptacle
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




40Calcination:Thechemicalandphysicalchangesthatoccuringypsum wallboard
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




surfacesduring a fire
‘ ‘ ‘ ‘




41. CarbonMonoxide:Anarcoticgasthatonemightbeexposedtointhefire ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




42. CarbonMonoxide:Thelevelsofthistoxindissipateovertimeafterremoval from ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




the fire environment.
‘ ‘ ‘




43. CarbonMonoxidePoisoning:ThistoxicconditiondoesNOTcauseacherry-pink ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




coloration to the skin ofthe fire victim and isNOTvisible on allskin types
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




44. CarburetorBackfire:Thisoccurrenceisthemostcommonopen-flame ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




ignition source in non-fuel injected vehicles
‘ ‘ ‘ ‘ ‘ ‘




45. Ceilingjet:Whenthefireplumereachestheceilingofaroomandmoves ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




laterally along the ceiling
‘ ‘ ‘ ‘




46. ChristmasTree: AniteminthehomethatburnsatapeakHRRof3000- ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




5000kW,which ishotter than a poolofgasoline ora polyurethane chair
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




47. CleanBurn:Thisoccurswhenintenseradiatedheatordirectflamecontactsa ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




surface during the fire,burning awaydeposits
‘ ‘ ‘ ‘ ‘ ‘ ‘




48. Collapsed Furniture Springs: This is a fire effect to furniture that does NOT ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




provide the investigators with clues concerning the type of ignition source, but can show
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




fire spread and intensity
‘ ‘ ‘ ‘




49. Color:AfirecharacteristicthatisNOTnecessarilyanaccurateindicatorofthe ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




flame temperature
‘ ‘




50. ColorCodes:Thisfeaturedistinguishestheheat-sensitivebulbsofsprinkler ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




headsfrom each other
‘ ‘ ‘ ‘




51. Combustion:Achemicalprocessofoxidation,whichoccursataratefast ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




enough toproduceheatand usuallylightin the formofeitheragloworaflame
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




52. Compartmentation:Abuildingdesignfeaturethataimstolimitthefiretoitsorigin. ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




53. CompetentIgnitionSource: Locatedattheorigin,theseshouldbe ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




considered individually during the developmentofa cause hypothesis
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




54. Complete PPE: Thisshould be donned when dealing with hazardous ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




chemicals55.Conduction:Anexampleofheattransfer,whentheheatingofa steel
‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘




beam to an unexposed partofa building resultsin a fire in thatlocation
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g g
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