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TCFP FIRE INVESTIGATOR EXAM/TCFP FIRE INVESTIGATOR EXAM PREPARATION/ TCFP
FIRE INVESTIGATOR PRACTICE EXAM ACTUAL EXAM 100 QUESTIONS AND CORRECT
DETAILED ANSWERS 2025/2026 (100% VERIFIED ANSWERS) |A+GRADE
What is a seated explosion? - ......ANSWER........Seated explosions have a blast crater in
the center of the explosion. Generally caused by high explosives like TNT, PETN, RDX,
ANFO.
Non seated explosions are caused by dispersed fuel gases and dusts. They do not cause a
blast crater.
What can cause a non-seated explosion? - ......ANSWER........Fuel gases Pooling of
flammable liquids Dusts Backdraft
What does BLEVE stand for? - ......ANSWER........Boiling Liquid Expanding Vapor Explosion
What are the different basic types of explosions? - ......ANSWER........Mechanical BLEVE
Chemical Combustion Electrical Nuclear
What are the parts of an investigation timeline? - ......ANSWER........Hard times soft times
Benchmark events
Describe some causes of injury or loss of life: - ......ANSWER........Toxicity HazMat
Compartmentation (failure to contain fire) Change of occupancy Fire alarms (failure)
Human behavior Suppression Housekeeping Fuel Loads Ventilation Code Violations
Egress Structural failure
What are the four classifications of fire? - ......ANSWER........Accidental Natural Incendiary
Undetermined
What is the difference between Probable and Possible? - ......ANSWER........Probable =
more than 50% Possible = 50% or less
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What are the three phases of ignition? - ......ANSWER........Generation Transmission
Heating
What are important things to look at when you are comparing fire patterns?
- ......ANSWER........Sequence of patterns Depth of char Ventilation Missing wood Depth of
calcination Arc mapping
What are some factors to consider at a structure fire? - ......ANSWER........Pre fire
conditions Structure dimensions Building ventilation & systems Weather Electrical
systems HVAC Fuel gas / Liquid fuels Fire protection systems Security systems Witnesses
Every investigation should be conducted using the _________ method and a _________
approach. - ......ANSWER........Scientific, Systematic
What is the preferred method of transporting evidence to the state lab?
- ......ANSWER........hand delivery
What are the four types of evidence containers? - ......ANSWER........Metal cans Glass jars
Special evidence bags Common plastic bags
What are two ways of detecting hydrocarbons? - ......ANSWER........Canine team
Hydrocarbon detector
What suppression activities should be done to preserve the evidence at the fire scene?
- ......ANSWER........Caution while using hose streams, overhaul, or salvage Don't move any
appliance knobs or switches Caution while using or refilling power tools Limiting access to
the scene
What does NFIRS stand for? - ......ANSWER........National Fire Incident Reporting System
What are the two main types of fire scene drawings? - ......ANSWER........Sketches and
diagrams
TCFP FIRE INVESTIGATOR EXAM/TCFP FIRE INVESTIGATOR EXAM PREPARATION/ TCFP
FIRE INVESTIGATOR PRACTICE EXAM ACTUAL EXAM 100 QUESTIONS AND CORRECT
DETAILED ANSWERS 2025/2026 (100% VERIFIED ANSWERS) |A+GRADE
What is a seated explosion? - ......ANSWER........Seated explosions have a blast crater in
the center of the explosion. Generally caused by high explosives like TNT, PETN, RDX,
ANFO.
Non seated explosions are caused by dispersed fuel gases and dusts. They do not cause a
blast crater.
What can cause a non-seated explosion? - ......ANSWER........Fuel gases Pooling of
flammable liquids Dusts Backdraft
What does BLEVE stand for? - ......ANSWER........Boiling Liquid Expanding Vapor Explosion
What are the different basic types of explosions? - ......ANSWER........Mechanical BLEVE
Chemical Combustion Electrical Nuclear
What are the parts of an investigation timeline? - ......ANSWER........Hard times soft times
Benchmark events
Describe some causes of injury or loss of life: - ......ANSWER........Toxicity HazMat
Compartmentation (failure to contain fire) Change of occupancy Fire alarms (failure)
Human behavior Suppression Housekeeping Fuel Loads Ventilation Code Violations
Egress Structural failure
What are the four classifications of fire? - ......ANSWER........Accidental Natural Incendiary
Undetermined
What is the difference between Probable and Possible? - ......ANSWER........Probable =
more than 50% Possible = 50% or less
, 2 of 10
What are the three phases of ignition? - ......ANSWER........Generation Transmission
Heating
What are important things to look at when you are comparing fire patterns?
- ......ANSWER........Sequence of patterns Depth of char Ventilation Missing wood Depth of
calcination Arc mapping
What are some factors to consider at a structure fire? - ......ANSWER........Pre fire
conditions Structure dimensions Building ventilation & systems Weather Electrical
systems HVAC Fuel gas / Liquid fuels Fire protection systems Security systems Witnesses
Every investigation should be conducted using the _________ method and a _________
approach. - ......ANSWER........Scientific, Systematic
What is the preferred method of transporting evidence to the state lab?
- ......ANSWER........hand delivery
What are the four types of evidence containers? - ......ANSWER........Metal cans Glass jars
Special evidence bags Common plastic bags
What are two ways of detecting hydrocarbons? - ......ANSWER........Canine team
Hydrocarbon detector
What suppression activities should be done to preserve the evidence at the fire scene?
- ......ANSWER........Caution while using hose streams, overhaul, or salvage Don't move any
appliance knobs or switches Caution while using or refilling power tools Limiting access to
the scene
What does NFIRS stand for? - ......ANSWER........National Fire Incident Reporting System
What are the two main types of fire scene drawings? - ......ANSWER........Sketches and
diagrams
