Question 749 Deck Safety

70% to pass

Some spaces protected by fixed carbon dioxide systems are required to have audible alarms that begin sounding prior to the discharge of CO2. This time delay must be at least _______________.

A 20 seconds
B 40 seconds
C one minute
D two minutes
AI Explanation

The correct answer is A) 20 seconds. The requirement for a minimum 20-second time delay before the discharge of carbon dioxide (CO2) is specified in the Code of Federal Regulations (CFR) for the US Coast Guard. Specifically, 46 CFR 76.60-10 states that the alarm must sound for at least 20 seconds before the CO2 is discharged into the protected space. This time delay allows personnel to evacuate the area before the CO2 is released, preventing injury or asphyxiation. The other answer choices are incorrect because 40 seconds, one minute, and two minutes are not the required minimum time delay specified in the regulations.

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