FE FE Emergency Response & Extinguisher Selection

Question 1

Which fire extinguisher agent is recommended for a Class K commercial kitchen fire involving hot cooking oils?

Accepted Answer

Wet chemical (potassium acetate/citrate solution)

Answer

Wet chemical agents (Class K) are specifically designed for high-temperature cooking oil fires, creating a soap-like layer that cools and suppresses the fire.

Question 2

A technician is selecting an extinguisher for a server room. Which agent is preferred to minimize equipment damage?

Accepted Answer

CO2 or clean agent (Halotron/FM-200)

Answer

CO2 and clean agents leave no residue, making them ideal for sensitive electronic equipment where dry chemical or water damage would be catastrophic.

Question 3

Which class of fire extinguisher is required to carry an electrical non-conductivity rating?

Accepted Answer

Class C (any extinguisher used on energized electrical equipment)

Answer

Class C rated extinguishers must use non-conductive agents (CO2, dry chemical, clean agent) and are tested to ensure they won't conduct electricity back to the user.

Question 4

What action should be taken first upon discovering a small fire before using a fire extinguisher?

Accepted Answer

Activate the building fire alarm and ensure occupants are evacuating

Answer

Activating the alarm and initiating evacuation are the top priorities — life safety comes before fire suppression attempts.

Question 5

For a Class D combustible metal fire involving magnesium, which extinguisher should be used?

Accepted Answer

Dry powder specifically rated for the metal involved (e.g., Met-L-X)

Answer

Class D fires require a dry powder agent specifically matched to the burning metal — using the wrong agent can make the fire worse.

(FE) Certified Portable Fire Extinguisher Technician Practice Test

(FE) Certified Portable Fire Extinguisher Technician Practice Test

FE FE Emergency Response & Extinguisher Selection