Question 11 of 30
You are releasing carbon dioxide gas (CO2) into an engine compartment to extinguish a fire. The CO2 will be most effective if the:
A
air flow to the compartment is increased with blowers
B
compartment is closed and airtight
C
compartment is left open to the air
D
compartment is closed and ventilators are opened
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Answer & Explanation
The correct answer is Option B: compartment is closed and airtight.
To extinguish a fire with CO2, the compartment must be sealed to contain the gas, thereby reducing the oxygen concentration to a level below that required for combustion. Increasing air flow or leaving the compartment open would disperse the CO2, rendering it ineffective.