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

Correct Answer: Option C — To initiate a safety shutdown, the fuel pressure 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.

Fuel pressure limit controls on automatic auxiliary boilers must initiate a safety shutdown when fuel pressure drops below safe combustion limits. Furthermore, 46 CFR mandates that a manual reset is required before the boiler can be restarted.