Question 560 Deck Safety

70% to pass

Which statement is TRUE concerning a fire in a machinery space?

A the space should be opened 5 minutes after flooding CO2 to prevent injury to personnel
B water in any form should not be used as it will spread the fire
C the fixed carbon dioxide system should be used immediately, as it is the most efficient means of extinguishment
D the fixed carbon dioxide system should be used only when all other means of extinguishment have failed
AI Explanation

The correct answer is D) the fixed carbon dioxide system should be used only when all other means of extinguishment have failed. The reason this is the correct answer is that carbon dioxide systems are hazardous to personnel and should only be used as a last resort in machinery spaces. The regulations require attempting other extinguishing methods, such as portable fire extinguishers or water, before activating the fixed CO2 system, as CO2 can displace oxygen and pose a serious risk to crew members in the space. The other options are incorrect because they either recommend unsafe actions (A, B) or contradict the proper protocol for using the CO2 system (C).

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