Steam Plants (Boilers & Turbines) USCG Q#768 (Set 26)

63. The maximum lube oil temperature leaving a large, main propulsion steam turbine bearing should __________.

Official USCG Answer & Rule Citation

Correct Answer: Option A — never exceed 170°F

Main propulsion steam turbine bearing discharge temperatures must be carefully monitored to prevent babbitt failure, with USCG operational limits dictating that bearing outlet temperatures shall never exceed 170°F.

All Steam Plants (Boilers & Turbines) Sets Practice Set 26