Question 367General Subjects - 1st Asst/Chief

70% to pass

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

AThe draft loss interlock switch must be tested to insure that a safety shutdown occurs when there is insufficient draft to support combustion. There is no requirement to test the draft loss interlock switch at boiler startup.

BThe draft loss interlock switch must be tested to insure that boiler startup is prevented when there is insufficient draft to support combustion. There is no requirement to test the draft loss interlock switch for boiler safety shutdown.

CThe draft loss interlock switch must be tested to insure that a safety shutdown occurs and a boiler startup is prevented when there is insufficient draft to support combustion.

DEither the draft loss interlock switch must be tested to insure that a safety shutdown occurs or boiler startup is prevented when there is insufficient draft to support combustion. There is no requirement to perform both tests.

AI Explanation

The correct answer is C. According to 46 CFR regulations, the draft loss interlock switch must be tested to ensure that a safety shutdown occurs and boiler startup is prevented when there is insufficient draft to support combustion. This is a regulatory requirement to verify the proper operation of the draft limit control system, which is a critical safety feature for automatic auxiliary boilers. The other answer choices are incorrect because they either do not require testing both the safety shutdown and startup prevention functions (A and D), or they only require testing one of the functions (B).