FREE CRST Fire Prevention and Protection Questions and Answers

Question 1

Which are the four components of the fire tetrahedron?

Accepted Answer

Fuel, Heat, Oxygen, and a Chemical Chain Reaction

Answer

The fire tetrahedron model illustrates the four elements required for a fire to start and be sustained: fuel, heat, oxygen, and an uninhibited chemical chain reaction. Removing any one of these elements will extinguish the fire.

Question 2

A fire involving energized electrical equipment should be fought with which class of fire extinguisher?

Accepted Answer

Class C

Answer

Class C fire extinguishers are designed for use on fires involving energized electrical equipment. They use non-conductive extinguishing agents, such as carbon dioxide or dry chemical, which prevent the risk of electric shock to the operator.

Question 3

When using a portable fire extinguisher, the acronym P.A.S.S. is a helpful reminder of the steps. What does the 'A' stand for?

Accepted Answer

Aim at the base of the fire

Answer

The P.A.S.S. method stands for Pull the pin, Aim the nozzle at the base of the fire, Squeeze the handle, and Sweep from side to side. Aiming at the base is crucial because it directs the extinguishing agent at the fuel source, not the flames.

Question 4

Which of the following is an example of an administrative control for fire prevention?

Accepted Answer

Implementing a hot work permit system.

Answer

Administrative controls are work practices or procedures that reduce the risk of a hazard. A hot work permit system is a formal procedure that ensures necessary precautions are taken before, during, and after activities like welding or cutting that can create ignition sources.

Question 5

What is the most critical requirement for a designated emergency egress route?

Accepted Answer

It must be kept clear and unobstructed at all times.

Answer

An egress route is useless if it cannot be accessed or traversed during an emergency. Therefore, the most critical requirement is that it remains clear, unlocked, and completely unobstructed at all times to allow for a quick and safe exit.

CRST - Canadian Registered Safety Technician Practice Test

CRST - Canadian Registered Safety Technician Practice Test

FREE CRST Fire Prevention and Protection Questions and Answers