Question 822 Deck Safety

70% to pass

What is NOT a characteristic of carbon dioxide fire-extinguishing agents?

A Effective even if ventilation is not shut down
B Non-corrosive
C Effective on electrical equipment
D Will not deteriorate in storage
AI Explanation

The correct answer is A) Effective even if ventilation is not shut down. Carbon dioxide (CO2) fire-extinguishing agents are not effective if ventilation is not shut down. CO2 works by displacing the oxygen in the air, which suffocates the fire. If ventilation is not shut down, the CO2 will be quickly dispersed, rendering the agent ineffective. The other characteristics listed - non-corrosive, effective on electrical equipment, and not deteriorating in storage - are accurate for CO2 fire extinguishers.

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Official Resources
46 CFR Lifesaving Equipment USCG Marine Safety Center USCG National Maritime Center
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