USCG USCG Motor
Set 9 • Question #363 of 382
Launch Interactive Practice Room Coast Guard Regulations (46 CFR) require that the flame safeguard control system for an automatic boiler, should __________.
A
be designed to automatically relight the boiler fires after a low water shutdown
B
incorporate an open bimetallic helix pyrostat stack switch
C
be capable of closing the fuel valves in not more than 4 seconds after a flame failure
✓ Correct Answer
D
provide a trial for ignition period of not more than 90 seconds
USCG NMC Regulatory Explanation
In USCG Motor Plants (Diesel Engineering), regarding 'Coast Guard Regulations (46 CFR) require that the flame safeguard control system for an automatic boiler, should', the correct operational principle is: 'be capable of closing the fuel valves in not more than 4 seconds after a flame failure'.
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