NAFI CFEI Test
What is the primary purpose of fire investigation?
Answer: To determine the origin, cause, and circumstances of a fire or explosion.
Which of the following is the most important first step in a fire investigation?
A) Interview witnesses
B) Establish the origin of the fire
C) Photograph the scene
D) Collect physical evidence
Answer: B) Establish the origin of the fire
Which NFPA standard provides guidelines for fire investigations?
Answer: NFPA 921
A fire investigator finds a V-pattern on a wall. What does this typically indicate?
Answer: The point of origin of the fire is near the base of the V-pattern.
Which of the following is an example of direct evidence?
A) A burn pattern
B) A witness statement
C) A photograph of the scene
D) A lab report
Answer: B) A witness statement
When collecting evidence, which method is recommended to maintain its integrity?
, Answer: Use proper chain of custody procedures and secure evidence in labeled,
sealed containers.
In determining fire cause, the "fire triangle" consists of heat, oxygen, and:
Answer: Fuel
Which type of fire pattern indicates a flammable liquid was used as an accelerant?
Answer: Irregular burn patterns with deep char.
When taking photographs of a fire scene, what is the correct sequence?
Answer: Overall, mid-range, close-up.
A fire investigator suspects arson. Which of the following actions should be taken
first?
Answer: Secure the scene and preserve evidence.
A low burn pattern with no signs of ventilation could indicate:
Answer: A slow, smoldering fire.
Which type of evidence includes fingerprints and DNA?
Answer: Biological evidence.
Flashover typically occurs when room temperatures reach approximately:
Answer: 1,100°F (593°C)
What is the recommended method for preserving accelerant evidence?
Answer: Place samples in clean, airtight metal containers like paint cans.
Which document serves as a step-by-step guide for fire investigation methodology?
Answer: NFPA 921 Guide for Fire and Explosion Investigations
Which of the following is NOT a common ignition source?
What is the primary purpose of fire investigation?
Answer: To determine the origin, cause, and circumstances of a fire or explosion.
Which of the following is the most important first step in a fire investigation?
A) Interview witnesses
B) Establish the origin of the fire
C) Photograph the scene
D) Collect physical evidence
Answer: B) Establish the origin of the fire
Which NFPA standard provides guidelines for fire investigations?
Answer: NFPA 921
A fire investigator finds a V-pattern on a wall. What does this typically indicate?
Answer: The point of origin of the fire is near the base of the V-pattern.
Which of the following is an example of direct evidence?
A) A burn pattern
B) A witness statement
C) A photograph of the scene
D) A lab report
Answer: B) A witness statement
When collecting evidence, which method is recommended to maintain its integrity?
, Answer: Use proper chain of custody procedures and secure evidence in labeled,
sealed containers.
In determining fire cause, the "fire triangle" consists of heat, oxygen, and:
Answer: Fuel
Which type of fire pattern indicates a flammable liquid was used as an accelerant?
Answer: Irregular burn patterns with deep char.
When taking photographs of a fire scene, what is the correct sequence?
Answer: Overall, mid-range, close-up.
A fire investigator suspects arson. Which of the following actions should be taken
first?
Answer: Secure the scene and preserve evidence.
A low burn pattern with no signs of ventilation could indicate:
Answer: A slow, smoldering fire.
Which type of evidence includes fingerprints and DNA?
Answer: Biological evidence.
Flashover typically occurs when room temperatures reach approximately:
Answer: 1,100°F (593°C)
What is the recommended method for preserving accelerant evidence?
Answer: Place samples in clean, airtight metal containers like paint cans.
Which document serves as a step-by-step guide for fire investigation methodology?
Answer: NFPA 921 Guide for Fire and Explosion Investigations
Which of the following is NOT a common ignition source?
