Which of the following should NEVER be done when attempting to extinguish burning diesel fuel?
A) Use a Class-B rated fire extinguisher
B) Douse with water
C) Douse with foam
D) Use a carbon dioxide fire extinguisher

Question

Quizplus · Accepted Answer

Water should never be used to extinguish a diesel fuel fire because it can spread the fuel, making the fire worse. Diesel is less volatile than gasoline but can still ignite, and water can cause the burning fuel to scatter, potentially spreading the fire. Foam, CO2, and Class-B fire extinguishers are appropriate for flammable liquid fires, including diesel.

Which of the Following Should NEVER Be Done When Attempting