Day 1 Lab 1: Identification of Fire Types and Extinguisher Use Flashcards
Which chemical is extremely toxic and not approved for fire extinguishing use?
Carbon tetrachloride (Halon 104)
Which type of fire extinguisher extinguishes fire by depriving it of oxygen?
CO2 fire extinguishers
What is one of the significant risks when using water-type extinguishers on electrical fires (Class C)?
Residual electricity causing electrical shock
Why are markings applied to fire extinguishers and their vicinity?
To indicate suitability for a particular class of fire
What is the main danger of using CO2 fire extinguishers in closed areas?
Deprivation of oxygen for the operator
Why are water-type fire extinguishers not recommended for Class B fires?
Most petroleum products float on water
When using a fire extinguisher, the agent must be aimed at
the base of the fire
What is the primary effect of water on Class A fires?
Correct answer: Both A and B
Cools the material being burned
Deprives fire of oxygen
What is the primary method of operation for CO2 fire extinguishers?
Self-expelling
What type of extinguishers is most effective for Class D fires?
Dry powder extinguishers
There’s an electrical fire involving energized wiring and equipment. Which extinguisher would be most appropriate?
CO2 extinguisher
You encounter a fire involving ordinary combustible materials like wood and paper. Which extinguisher should you use?
Water extinguisher
A fire has started due to flammable metals like magnesium. What type of extinguisher should you use?
Dry powder extinguisher
A fire breaks out involving flammable petroleum products such as AVGAS. Which extinguisher is the best choice?
CO2 extinguisher
