FE Hazard Identification & Risk Assessment 2 — Questions and Answers
Question 1: A facility stores acetone, methanol, and isopropyl alcohol in the same storage room. How should this hazard be classified?
- Class B flammable liquid hazard (Correct answer)
- Class A ordinary combustible hazard
- Class C energized electrical hazard
- Class D combustible metal hazard
Correct answer: Class B flammable liquid hazard
Acetone, methanol, and isopropyl alcohol are all flammable liquids classified as Class B fire hazards.
Question 2: When assessing travel distance to a fire extinguisher for a Class B hazard, what is the maximum allowable travel distance per NFPA 10?
- 50 feet (Correct answer)
- 75 feet
- 30 feet
- 100 feet
Correct answer: 50 feet
NFPA 10 requires a maximum travel distance of 50 feet to extinguishers protecting Class B hazards.
Question 3: A risk assessment reveals a workshop with magnesium shavings accumulating on the floor. Which hazard classification applies?
- Class D (Correct answer)
- Class A
- Class B
- Class C
Correct answer: Class D
Magnesium is a combustible metal and represents a Class D fire hazard.
Question 4: During a site survey, a technician finds an area with energized electrical panels and no nearby extinguisher. What risk does this primarily represent?
- Class C fire hazard with shock risk to first responders (Correct answer)
- Class A hazard because electrical components are solid materials
- Class B hazard due to insulating oils
- No hazard since electrical fires are self-limiting
Correct answer: Class C fire hazard with shock risk to first responders
Energized electrical equipment creates a Class C hazard, and using a conductive agent risks shock to the person fighting the fire.
Question 5: A hazard assessment identifies a computer server room as the primary risk area. Which type of extinguisher is most appropriate to specify?
- Clean agent or CO2 extinguisher (Correct answer)
- Water extinguisher
- Dry chemical (ABC) extinguisher
- Foam extinguisher
Correct answer: Clean agent or CO2 extinguisher
Clean agent or CO2 extinguishers are preferred in server rooms to avoid damaging sensitive electronics.
Question 6: Which NFPA standard is the primary reference for hazard identification and extinguisher placement requirements?
- NFPA 10 (Correct answer)
- NFPA 13
- NFPA 72
- NFPA 25
Correct answer: NFPA 10
NFPA 10, Standard for Portable Fire Extinguishers, governs hazard classification and placement requirements.
Question 7: A risk assessment identifies a mixed-hazard environment containing both flammable liquids and ordinary combustibles. What extinguisher rating is most suitable?
- ABC-rated dry chemical extinguisher (Correct answer)
- BC-rated CO2 extinguisher
- A-rated water extinguisher
- D-rated dry powder extinguisher
Correct answer: ABC-rated dry chemical extinguisher
An ABC-rated dry chemical extinguisher is effective against ordinary combustibles (A), flammable liquids (B), and electrical hazards (C).
FE Hazard Identification & Risk Assessment 2
A facility stores acetone, methanol, and isopropyl alcohol in the same storage room.
How should this hazard be classified?