CFI Portable Fire Extinguishers & Suppression Equipment 2

Question 1

A carbon dioxide (CO2) fire extinguisher is being inspected. Which condition would require it to be removed from service?

Accepted Answer

Loss of more than 10% of its listed weight

Answer

A full charge reading on the gauge

Answer

A plastic horn showing minor surface scuffs

Answer

A tag showing inspection within the last 11 months

Question 2

What does the term 'hydrostatic testing' refer to in the context of portable fire extinguishers?

Accepted Answer

Pressure testing the extinguisher cylinder with water to verify structural integrity

Answer

Testing the extinguishing agent's chemical composition

Answer

Measuring water content in dry chemical agents

Answer

Testing the nozzle flow rate with water

Question 3

Under NFPA 10, stored-pressure dry chemical extinguishers require hydrostatic testing at what interval?

Accepted Answer

Every 12 years

Answer

Every 3 years

Answer

Every 6 years

Answer

Every 15 years

Question 4

A fire inspector observes that the inspection tag on an extinguisher shows the last inspection was 13 months ago. What is the correct action?

Accepted Answer

Document the finding and require immediate annual maintenance

Answer

No action required since it is less than 2 years

Answer

Immediately discharge and replace the extinguisher

Answer

Only take action if the pressure gauge reads low

Question 5

Which fire extinguisher class is rated for fires involving energized electrical equipment?

Accepted Answer

Class C

Answer

Class A

Answer

Class B

Answer

Class D

Question 6

According to NFPA 10, what is the maximum travel distance to a Class A fire extinguisher in a light-hazard occupancy?

Accepted Answer

75 feet

Answer

50 feet

Answer

100 feet

Answer

150 feet

Question 7

When inspecting a multipurpose dry chemical extinguisher, the inspector finds the pull pin is missing but the pressure gauge reads in the green zone. What is the correct action?

Accepted Answer

Tag it out of service; missing safety devices require immediate correction

Answer

No action needed if the gauge reads normal

Answer

Note in the report and re-inspect in 30 days

Answer

Replace the agent and recharge immediately