USCG USCG Steam
Set 17 • Question #245 of 496
Launch Interactive Practice Room The steam drum air cock is normally opened when cooling down a boiler to __________.
A
relieve any residual air pressure in the drum
B
prevent a vacuum forming in the steam drum
✓ Correct Answer
C
reduce the pressure in the drum more rapidly
D
protect the superheater
USCG NMC Regulatory Explanation
In USCG Steam Plants (Boilers & Turbines), regarding 'The steam drum air cock is normally opened when cooling down a boiler to', the verified engineering fact is: 'prevent a vacuum forming in the steam drum'.
Question Discussion & Notes
0Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.
Loading mariner discussions...