F02 F02 Fire Extinguisher Operations 2 — Questions and Answers
Question 1: What is the primary agent in a CO2 fire extinguisher?
- Dry chemical powder
- Carbon dioxide gas (Correct answer)
- Halon gas
- Water mist
Correct answer: Carbon dioxide gas
CO2 extinguishers discharge carbon dioxide, which smothers the fire by displacing oxygen.
Question 2: After using a fire extinguisher, even partially, what must a Fire Guard do?
- Leave it in place for the next shift
- Return it to service if it still shows pressure
- Tag it as used and arrange for recharging (Correct answer)
- Refill it with water
Correct answer: Tag it as used and arrange for recharging
Any extinguisher that has been discharged, even partially, must be tagged and sent for recharging before being returned to service.
Question 3: Which extinguisher type leaves a corrosive residue that can damage sensitive electronic equipment?
- CO2
- Water mist
- Dry chemical powder (Correct answer)
- Wet chemical
Correct answer: Dry chemical powder
Dry chemical powder can leave a corrosive residue that damages electronics and requires extensive cleanup.
Question 4: Where should fire extinguishers be mounted to comply with NYC Fire Code?
- Anywhere convenient
- Locked in a storage room
- In visible, accessible locations near exits or hazard areas (Correct answer)
- Behind furniture to protect them
Correct answer: In visible, accessible locations near exits or hazard areas
Extinguishers must be mounted in visible and accessible locations, typically near exits or areas with fire risk, so they can be reached quickly.
Question 5: What information must appear on a fire extinguisher's label?
- Only the manufacturer name
- Class rating, operating instructions, and hazard warnings (Correct answer)
- The building owner's name
- Only the last inspection date
Correct answer: Class rating, operating instructions, and hazard warnings
Labels must include the extinguisher's fire class rating, step-by-step operating instructions, and relevant hazard warnings.
Question 6: A fire extinguisher hydrostatic test for stored-pressure dry chemical units is required every:
- 1 year
- 3 years
- 6 years (Correct answer)
- 12 years
Correct answer: 6 years
NFPA 10 requires hydrostatic testing of stored-pressure dry chemical extinguishers every 6 years to verify cylinder integrity.
F02 F02 Fire Extinguisher Operations 2
What is the primary agent in a CO2 fire extinguisher?