USCG USCG Steam
Set 10 • Question #43 of 496
Launch Interactive Practice Room If it is necessary to operate a turbine driven main feed pump at shut off head, or at less than 20% of its rated capacity, what will prevent the pump from overheating?
A
Throttling of the steam supply valve.
B
Throttling of the liquid discharge valve.
C
A bypass or recirculating line led back to the pump impeller eye or suction.
D
A bypass or recirculating line led back to the source of suction supply.
✓ Correct Answer
USCG NMC Regulatory Explanation
In USCG Steam Plants (Boilers & Turbines), regarding 'If it is necessary to operate a turbine driven main feed pump at shut off head, or at less than 20% of its rated capacity, what will prevent the pump from overheating', the verified engineering fact is: 'A bypass or recirculating line led back to the source of suction supply.'.
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