NFPA NFPA 10 Portable Fire Extinguishers 2 — Questions and Answers
Question 1: Under NFPA 10, what is the maximum travel distance to a Class B extinguisher in a low-hazard occupancy?
- 30 feet
- 50 feet (Correct answer)
- 75 feet
- 100 feet
Correct answer: 50 feet
NFPA 10 limits travel distance to a Class B extinguisher in low-hazard areas to 50 feet.
Question 2: According to NFPA 10, what type of fire extinguisher is NOT acceptable for use on Class C (energized electrical) fires?
- CO2 extinguisher
- Dry chemical extinguisher
- Halon extinguisher
- Water extinguisher (Correct answer)
Correct answer: Water extinguisher
NFPA 10 prohibits the use of water extinguishers on Class C fires because water conducts electricity and creates an electrocution hazard.
Question 3: Under NFPA 10, which extinguishing agent requires a 12-year hydrostatic test for its cylinder?
- CO2 (high pressure) (Correct answer)
- Stored-pressure dry chemical
- Water mist (stainless steel)
- Wet chemical
Correct answer: CO2 (high pressure)
NFPA 10 requires CO2 extinguisher cylinders, as high-pressure vessels, to undergo hydrostatic testing every 5 years.
Question 4: According to NFPA 10, what information must appear on the tag attached to a fire extinguisher after annual maintenance?
- Manufacturer's date of manufacture only
- Date of service, servicing company, and technician initials or ID (Correct answer)
- Owner name and address
- Next recharge due date only
Correct answer: Date of service, servicing company, and technician initials or ID
NFPA 10 requires the maintenance tag to show the date of service, the name of the servicing organization, and the technician's identification.
Question 5: Under NFPA 10, what minimum rating is required for a Class B extinguisher protecting a high-hazard flammable liquid area with a 25-square-foot maximum fire size?
- 5-B
- 10-B (Correct answer)
- 20-B
- 40-B
Correct answer: 10-B
NFPA 10 tables require at least a 10-B rated extinguisher for high-hazard areas where maximum fire size is 25 square feet.
Question 6: According to NFPA 10, what is the maximum interval between visual monthly inspections of portable fire extinguishers?
- 30 days (Correct answer)
- 45 days
- 60 days
- 90 days
Correct answer: 30 days
NFPA 10 requires that fire extinguishers be visually inspected at maximum intervals of 30 days.
NFPA NFPA 10 Portable Fire Extinguishers 2
Under NFPA 10, what is the maximum travel distance to a Class B extinguisher in a low-hazard occupancy?