Fire Investigation - ANSWERSthe process of determining the origin, cause, and development of a fire or explosion
Standard - ANSWERSa document which contains mandatory provisions
Guide - ANSWERSa document that is advisory or informative in nature and contains only nonmandatory provisions
NF...
Fire Investigator Final Exam Questions
& Answers
Fire Investigation - ANSWERSthe process of determining the origin, cause, and
development of a fire or explosion
Standard - ANSWERSa document which contains mandatory provisions
Guide - ANSWERSa document that is advisory or informative in nature and contains
only nonmandatory provisions
NFPA 921 - ANSWERSGuide for fire and explosion investigations
NFPA 1033 - ANSWERSStandard for professional qualifications for fire investigator
NFPA 1031 - ANSWERSStandard for professional qualifications for fire inspector and
plan examiner
NFPA 70 - ANSWERSNational Electric Code (NEC)
Steps to investigate a fire - ANSWERS1. Receive the assignment
2. Prepare for the investigation
3. Conduct the investigation
4. Collect and preserve evidence
5. Analyze the incident
6. Draw conclusions
7. Report
Scientific Method - ANSWERSthe systematic pursuit of knowledge
Steps to the scientific method - ANSWERS1. Recognize of the need to use the scientific
method
2. Define the problem
3. Collect Data
4. Analyze the Data
5. Develop a Hypothesis or Hypotheses
6. Test the Hypothesis
(7. Select a Final Hypothesis)
(8. Report)
Scene safety assessment - ANSWERSinspection to determine whether the scene is
safe to enter or what steps would be necessary to render the scene safe
, What is the first thing we do when we arrive on scene? - ANSWERSScene safety
assessment
Hypothesis certainty - ANSWERSProbable
Possible
Suspected
Fire - ANSWERSa rapid oxidation resulting in the evolution of heat and light
Fire Triangle - ANSWERSThe three components required to initiate combustion - heat,
fuel, and oxygen
Fire tetrahedron - ANSWERSThe four components required to sustain combustion -
heat, fuel, oxygen, and uninhibited chemical chain reaction
Pyrolysis - ANSWERSdecomposition of a material into simpler molecular compounds by
the effects of heat
Vaporization - ANSWERSheating liquids to produce ignitable vapors
Specific Gravity - ANSWERSThe density of a substance in comparison to water
What are the three states of matter? - ANSWERSSolid, liquid, and gas.
In which phase does fire occur? - ANSWERSGas phase.
probable - ANSWERSMore likely true than not (>50% likely).
possible - ANSWERSFeasible; often used when two hypotheses have the same level of
certainty.
suspected - ANSWERSWhen the opinion does not qualify as an expert opinion.
What are the two types of combustion? - ANSWERSFlaming and smoldering/glowing.
What are the characteristics of LPG? - ANSWERSColorless, odorless, non-toxic.
Flammable range 1.5 - 15%. Vapor density 1.88 (will sink).
What are the characteristics of propane? - ANSWERSColorless, odorless, non-toxic.
Flammable range 2 - 10%. Vapor density 1.55 (will sink).
What are the characteristics of natural gas? - ANSWERSColorless, odorless, non-toxic.
Flammable range 5 - 15%. Vapor density 0.68 (will float).
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