NFPA 921 GUIDE FOR FIRE AND EXPLOSION INVESTIGATIONS EXAM QUESTIONS AND ANSWERS.pdf

NFPA 921 GUIDE FOR FIRE AND
EXPLOSION INVESTIGATIONS EXAM
QUESTIONS AND ANSWERS
natureQofQfireQinvestigationsQ-QCORRECTQANSWERS-
aQfireQorQexplosionQinvestigationQisQaQcomplexQendeavorQinvolvingQskill,Qtechnology,Qknowledge,Qa
ndQscience.QTheQcompilationQofQfactualQdata,QasQwellQasQanQanQanalysisQofQthoseQfacts,QshouldQbeQ
accomplishedQobjectively,Qtruthfully,QandQwithoutQexpectationQbias,Qpreconception,QorQprejudice
.QTheQbasicQmethodologyQofQtheQfireQinvestigationQshouldQrelyQonQtheQuseQofQaQsystematicQapproa
chQandQattentionQtoQallQrelevantQdetails...QWithQfewQexceptions,QtheQproperQmethodologyQforQaQfi
reQorQexplosionQinvestigationQisQtoQfireQdetermineQandQestablishQtheQorigin(s),QthenQinvestigateQth
eQcause,Qcircumstances,Qconditions,QorQagenciesQthatQbroughtQtheQignitionQsource,Qfuel,QandQoxid
antQtogether



systematicQapproachQ-QCORRECTQANSWERS-
basedQonQtheQscientificQmethodQandQprovidesQanQorganizationalQandQanalyticalQprocessQforQaQsuc
cessfulQfireQinvestigation



relatingQfireQinvestigationQtoQtheQscientificQmethodQ-QCORRECTQANSWERS-
scientificQmethodQisQaQprincipleQofQinquiryQthatQformsQaQbasisQforQlegitimateQscientificQandQengine
eringQprocesses,QincludingQfireQincidentQinvestigation.



recognizeQtheQneedQ(scientificQmethod)Q-QCORRECTQANSWERS-determineQthatQaQproblemQexists-
QaQfireQorQexplosionQhasQoccurredQandQtheQcauseQshouldQbeQdetermined




defineQtheQproblemQ(scientificQmethod)Q-QCORRECTQANSWERS-
havingQdeterminedQthatQaQproblemQexists,QdefineQtheQmannerQinQwhichQtheQproblemQcanQbeQsolv
ed-QconductedQanQoriginQandQcauseQinvestigation



collectQdataQ(scientificQmethod)Q-QCORRECTQANSWERS-
collectQfactsQthroughQobservation,Qexperiment,QorQotherQdirectQdata-gatheringQmeans

, analyzeQtheQdataQ(scientificQmethod)Q-QCORRECTQANSWERS-
analysisQofQdataQisQbasedQonQknowledge,Qtraining,Qexperience,QandQexpertise-
QunderstandingQtheQmeaningQofQtheQdataQenablesQtheQinvestigatorQtoQformQhypothesesQbasedQon


Qevidence




developQaQhypothesisQ(inductiveQreasoning)Q(scientificQmethod)Q-QCORRECTQANSWERS-
basedQonQtheQdataQanalysis,QtheQinvestigatorQdevelopsQandQproducesQaQhypothesis,QorQhypothese
s,QtoQexplainQtheQphenomena,QwhetherQitQbeQtheQnatureQofQfireQpatterns,QfireQspread,Qidentificati
onQofQtheQorigin,QtheQignitionQsequence,QtheQfireQcause,QorQtheQcausesQofQdamageQorQresponsibilit
yQforQtheQfireQorQexplosionQincident.



testQtheQhypothesisQ(deductiveQreasoning)Q(scientificQmethod)Q-QCORRECTQANSWERS-
theQinvestigatorQdoesQnotQhaveQaQvalidQorQreliableQconclusionQunlessQtheQhypothesisQcanQstandQth
eQtestQofQcarefulQandQseriousQchallenge.QtestingQofQtheQhypothesisQisQdoneQbyQtheQprincipleQofQde
ductiveQreasoning,QinQwhichQtheQinvestigatorQcomparesQtheQhypothesisQtoQallQknownQfactsQasQwel
lQasQtheQbodyQofQscientificQknowledgeQassociatedQwithQtheQphenomenaQrelevantQtoQtheQspecificQi
ncident.QAQhypothesisQcanQbeQtestedQbyQphysicallyQconductingQexperiments,QanalyticallyQapplying
QacceptedQscientificQprinciples,QorQbyQreferringQtoQscientificQresearch.QIfQtheQhypothesisQisQrefuted


QorQnotQsupported,QitQshouldQbeQdiscardedQandQalternateQhypothesesQshouldQbeQcreatedQandQtest


ed.



selectQfinalQhypothesisQ(scientificQmethod)Q-QCORRECTQANSWERS-
onceQtheQhypothesisQhasQbeenQtested,QtheQinvestigatorQshouldQreviewQtheQentireQprocessQtoQens
ureQthatQallQcredibleQdataQareQaccountedQforQandQallQfeasibleQalternateQhypothesesQhaveQbeenQco
nsideredQandQeliminated



avoidQpresumptionQ-QCORRECTQANSWERS-
untilQdataQhaveQbeenQcollected,QnoQspecificQhypothesisQcanQbeQreasonablyQformedQorQtested.QallQi
nvestigationsQshouldQbeQapproachedQwithoutQpresumptionQasQtoQorigin,QignitionQsequence,Qcaus
e,QfireQspread,QorQresponsibility