Question 370General Subjects - 1st Asst/Chief

70% to pass

According to 46 CFR regulations pertaining to tests and inspections as related to automatic auxiliary boilers burning heavy fuel oil, the fuel temperature limit control must be checked for proper shutdown operation. What statement is true?

ATo initiate a safety shutdown, the fuel temperature must be raised to a value above what is required for safe combustion. After the safety shutdown, a manual reset must be required before boiler restart.

BTo initiate a safety shutdown, the fuel temperature must be lowered to a value below what is required for safe combustion. After the safety shutdown, the boiler is required to restart automatically upon restoration of normal temperature.

CTo initiate a safety shutdown, the fuel temperature must be lowered to a value below what is required for safe combustion. After the safety shutdown, a manual reset must be required before boiler restart.

DTo initiate a safety shutdown, the fuel temperature must be raised to a value above what is required for safe combustion. After the safety shutdown, the boiler is required to restart automatically upon restoration of normal temperature.

AI Explanation

The correct answer is C. According to the regulations in 46 CFR, the fuel temperature limit control for automatic auxiliary boilers burning heavy fuel oil must be checked to ensure that it initiates a safety shutdown when the fuel temperature is lowered to a value below what is required for safe combustion. After the safety shutdown, a manual reset must be required before the boiler can be restarted. The other options are incorrect because they do not accurately reflect the regulatory requirements. Option A describes raising the fuel temperature above the safe level to initiate the shutdown, which is not correct. Option B describes the boiler restarting automatically after the shutdown, which is also not the requirement. Option D describes raising the fuel temperature to initiate the shutdown and automatic restart, which again does not match the regulations.

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