Question 1 of 30
The FIRST course of action in fighting a fire in a cargo or fuel oil tank is to:
A
Spray the tank boundaries with a fire hose to promote cooling
B
Direct a fire hose into the tank and energize the fire main
C
Discharge an initial charge of CO2 with a hand portable extinguisher
D
Secure all openings to the tank
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Answer & Explanation
The correct answer is Option D: Secure all openings to the tank.
Securing all openings to a cargo or fuel oil tank immediately cuts off the oxygen supply, a critical element for combustion. This primary action helps to contain the fire, reduces its intensity, and prepares the space for the safe and effective application of fixed extinguishing systems.