F-01 F-01 Fireguard Portable Fire Extinguisher Use 3 — Questions and Answers
Question 1: Which type of extinguisher is safe to use on Class A, B, and C fires?
- Water extinguisher
- Dry chemical (ABC) extinguisher (Correct answer)
- CO2 extinguisher
- Class D extinguisher
Correct answer: Dry chemical (ABC) extinguisher
ABC dry chemical extinguishers are rated for ordinary combustibles, flammable liquids, and energized electrical equipment.
Question 2: What does it mean if the needle on a fire extinguisher pressure gauge is in the red zone?
- The extinguisher is fully charged and ready for use
- The extinguisher is overcharged and may be dangerous
- The extinguisher is undercharged and may not function properly (Correct answer)
- The extinguisher has been used and must be inspected
Correct answer: The extinguisher is undercharged and may not function properly
A needle in the red zone below green indicates the extinguisher lacks sufficient pressure and may fail during an emergency.
Question 3: When is it NOT appropriate to attempt to fight a fire with a portable extinguisher?
- When the fire is in its earliest stages
- When the fire is larger than a wastepaper basket (Correct answer)
- When the fire involves paper or wood
- When others are already evacuating
Correct answer: When the fire is larger than a wastepaper basket
If a fire has grown beyond a small, contained size (roughly a wastepaper basket), occupants should evacuate and call the fire department.
Question 4: What is the primary purpose of the tamper seal on a fire extinguisher?
- To prevent accidental discharge by locking the trigger
- To indicate the extinguisher has not been used or tampered with (Correct answer)
- To keep the discharge hose attached during transport
- To seal the chemical agent inside the cylinder
Correct answer: To indicate the extinguisher has not been used or tampered with
The tamper seal confirms the safety pin is intact and that the extinguisher has not been discharged or tampered with since its last inspection.
Question 5: How often should portable fire extinguishers in commercial buildings be inspected by a trained professional?
- Every month
- Every six months
- Annually (Correct answer)
- Every two years
Correct answer: Annually
NFPA 10 requires a thorough annual maintenance inspection of all portable fire extinguishers by a certified professional.
Question 6: A Class K fire extinguisher is specifically designed for use in which environment?
- Laboratories with chemical hazards
- Commercial kitchens with cooking oils and fats (Correct answer)
- Electrical rooms with energized equipment
- Warehouses storing flammable liquids
Correct answer: Commercial kitchens with cooking oils and fats
Class K extinguishers are designed for high-temperature cooking oil fires common in commercial kitchen environments.
Question 7: What should a fireguard do FIRST upon discovering a fire before using an extinguisher?
- Immediately grab the nearest extinguisher and discharge it
- Activate the building fire alarm and call 911 (Correct answer)
- Locate the fire's fuel source to select the right extinguisher
- Notify the building manager and wait for instructions
Correct answer: Activate the building fire alarm and call 911
Activating the alarm and calling 911 ensures occupants are alerted and professional help is summoned before any suppression attempt.
F-01 F-01 Fireguard Portable Fire Extinguisher Use 3
Which type of extinguisher is safe to use on Class A, B, and C fires?