Steam Plants (Boilers & Turbines) USCG Question #737 (Set 25)

When a turbine bearing shows signs of overheating, you should __________.

Official USCG Answer & Rule Citation

Correct Answer: Option C — immediately reduce speed

Immediate speed reduction lowers friction and thermal loading on the failing journal or thrust bearing, preventing catastrophic babbit meltdown and shaft scoring while maintaining lubrication flow. Stopping instantly risks localized thermal binding, whereas reducing speed preserves temporary rotor control.

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