IAAI CFI STUDY QUESTIONS WITH VERIFIED ANSWERS

IAAI CFI STUDY QUESTIONS WITH
VERIFIED ANSWERS
CombustibleYLiquidY-YCORRECTYANSWERS-AYliquidYwithYaYflashYpointYABOVEY100F



12.5Y-YCORRECTYANSWERS-
IfYtheYcurrentYflowingYoutYfromYanYelectricalYpanelYisY12.5Yamps,YandYitYthenYflowsYthroughYanYelec
tricalYloadYofY1500Ywatts,YwhatYisYtheYamperageYofYtheYremainingYcurrentYflowYofYtheYreturnYcircuit
?



1000Y-YCORRECTYANSWERS-IfYaYhairYdryerYdrawsY8.3ampsY(inYaYhomeYwithY120-
voltYservice),YwhatYisYtheYwattage?



*PowerY(P)Y=YcurrentY(I)YxYvoltageY(V)

WattsY=YampsYxYvolts



1987Y-YCORRECTYANSWERS-TheYyearYofYtheYfirstYeditionYofYNFPAY1033



1.5YtimesY-YCORRECTYANSWERS-
TheYrecommendedYdistanceYforYsecuringYtheYperimeterYofYaYblastYscene



*ThatYis,YtheYdistanceYfromYtheYfurthestYdebris



1100°FY-YCORRECTYANSWERS-
WhatYtemperatureYinYtheYupperYgasYlayerYcausesYtheYonsetYofYFlashover?



1960°FY-YCORRECTYANSWERS-TheYtemperatureYatYwhichYcopperYmelts

,2YW/cm2Y-YCORRECTYANSWERS-
TheYmeasurementYofYtheYradiantYheatYfluxY(fromYgasYlayerYtoYtheYfloor)YthatYindicatesYtheYonsetYofY
flashover



240YvoltsY-YCORRECTYANSWERS-
TheYvoltageYbetweenYtheYtwoYhotYwiresYatYtheYserviceYentranceYcablesYinYmostYsingle-
familyYresidencesYinYtheYUnitedYStatesY(single-phaseYserviceYwithYthreeYwires)



3YyearsY-YCORRECTYANSWERS-TheYrevisionYcycleYforYNFPAY921Y(timespan)



350°FY-YCORRECTYANSWERS-TheYflashYpointYofYpowerYsteeringYfluid



35-70Yp.s.i.Y-YCORRECTYANSWERS-InYhigh-pressureYfuel-
injectedYvehicles,YthisYisYtheYtypicalYrangeYofYpressureYthatYisYusedYtoYpumpYfuelYfromYaYfuelYtank



5YandY17Y-YCORRECTYANSWERS-
TheYlowerYexplosiveYandYupperYexplosiveYlimitYofYnaturalYgasY(methane)?



680°FY-YCORRECTYANSWERS-TheYignitionYtemperatureYofYpowerYsteeringYfluid



FuelY-YCORRECTYANSWERS-AnyYsubstanceYthatYcanYundergoYcombustion



ActYorYOmissionY-YCORRECTYANSWERS-
TwoYfactorsYorYsituationsYleadingYtoYaYfireYthatYmayYshowYtheYnatureYofYtheYincidentYresponsibility.



AdditionalYInvestigativeYRecommendationsY-YCORRECTYANSWERS-
ThisYconceptYshouldYnotYbeYincludedYinYaYsummaryYreportYofYfindings.

,AdmiraltyYLawY-YCORRECTYANSWERS-AYlawYthatYmayYgovernYtheYfireYinvestigationYofYaYboat



After-marketYEquipmentY-YCORRECTYANSWERS-
AYtypeYofYdeviceYinYaYvehicle,YwhichYcanYcauseYanYelectricalYoverloadYtoYfactoryYinstalledYwiring



AliveYandYBreathingY-YCORRECTYANSWERS-
EvidenceYofYsmokeYorYsootYinYtheYlungs,Ybronchi,YandYtracheaYisYoneYofYtheYmostYsignificantYfactors
YinYconfirmingYthat,YatYtheYtimeYofYtheYfire,YtheYvictimYwasYWHAT?




AllYTeamYMembersY-YCORRECTYANSWERS-
ThoseYwhoYhaveYtheYresponsibilityYforYmonitoringYsafetyYconditionsYatYtheYfireYorYexplosionYscene



1220°FY-YCORRECTYANSWERS-TheYmeltingYtemperatureYofYaluminum



Aluminum-to-pavementYsparksY-YCORRECTYANSWERS-
WhichYoneYofYtheseYisYNOTYconsideredYaYcompetentYignitionYsource?Y

Metal-to-metalYsparks,

Aluminum-to-pavementYsparks,

Metal-to-pavementYsparks,

MotorYbearingYsparks



HeatYReleaseYRateY-YCORRECTYANSWERS-
AYmeaningfulYanalysisYofYaYfireYrequiresYanYunderstandingYofYtheYfireYgrowth,YtheYtotalYheatYreleas
ed,YandYWHAT?



Arc-faultYcircuitYinterrupterY-YCORRECTYANSWERS-
WhatYdoesYheYtermYAFCIYstandYfor?YAnd,YtheY"A"YspecificallyYrepresentsYwhat?

, ASTMY-YCORRECTYANSWERS-
TheYorganizationYthatYdevelopsYstandardYmethodsYforYtestingYmaterials



Auto-ignitionY-YCORRECTYANSWERS-InitiationYofYcombustionYbyYheatYbutYwithoutYaYsparkYorYflame



BackdraftY-YCORRECTYANSWERS-
AYdeflagrationYresultingYfromYtheYsuddenYintroductionYofYairYintoYaYconfinedYspaceYcontainingYoxy
gen-deficientYproductsYofYincompleteYcombustion



BackdraftY-YCORRECTYANSWERS-
AnYexplosionYcausedYbyYaYcombinationYofYcombustibleYmaterialsYheatedYtoYtheYignitionYpointYandY
aYsuddenYintroductionYofYoxygenYtoYsupportYcombustion



BackfireYFlameYArrestorY-YCORRECTYANSWERS-
AYboatYdeviceYthatYownersYfailYtoYkeepYclean,YwhichYisYaYfrequentYcauseYofYengineYcompartmentYfir
esYonYboats



BallastY-YCORRECTYANSWERS-
AYdeviceYonYaYfluorescentYlightYfixtureYthatYtransformsYtheYvoltageYfromYnormalYhouseholdYvoltag
eYtoYaYhigherYvoltage



BatteryY-YCORRECTYANSWERS-TheYstarterYmotorYdrawsYitsYenergyYfromYthisYsource



BeyondYaYReasonableYDoubtY-YCORRECTYANSWERS-TheYburdenYofYproofYinYaYcriminalYtrial



BimetallicYThermostatsY-YCORRECTYANSWERS-
TheYcomponentYthatYcontrolsYtemperatureYinYmanyYheat-producingYappliances