F02 F02 Fire Extinguisher Operations 3

Question 1

What does the letter 'A' on an extinguisher rating label indicate?

Accepted Answer

It is rated for ordinary combustible fires

Answer

The Class A rating means the extinguisher is effective on ordinary combustibles like wood, paper, and cloth.

Question 2

Which extinguisher is recommended for a server room fire?

Accepted Answer

CO2 or clean agent

Answer

CO2 or clean agent extinguishers are preferred in server rooms because they suppress fire without leaving damaging residue on equipment.

Question 3

If a fire extinguisher's tamper seal is broken, a Fire Guard should:

Accepted Answer

Immediately report it and remove the unit from service

Answer

A broken tamper seal suggests the extinguisher may have been partially discharged or tampered with, so it must be removed from service and inspected.

Question 4

What is the minimum number of portable extinguishers required in a building area according to NFPA 10 travel distance rules for Class A hazards?

Accepted Answer

Units must be within 75 feet travel distance of any point

Answer

NFPA 10 requires that no point in a light- or ordinary-hazard area be more than 75 feet travel distance from a Class A extinguisher.

Question 5

A water-type fire extinguisher must NEVER be used on which type of fire?

Accepted Answer

Electrical panel fire

Answer

Water conducts electricity, so using a water extinguisher on an energized electrical panel creates a serious electrocution hazard.

F02 - NYC Fire Guard F-02 Practice Test