USCG USCG Motor
Set 4 • Question #205 of 382
Launch Interactive Practice Room How is the concentration of dissolved oxygen in the feedwater of an auxiliary boiler maintained at acceptable limits?
A
Feedwater is cycled through a DC heater.
B
Feedwater is treated with phosphates.
C
Oxygen is liberated in the three-stages of feedwater preheating.
D
Oxygen is liberated by maintaining the highest practical feedwater temperature
✓ Correct Answer
USCG NMC Regulatory Explanation
In USCG Motor Plants (Diesel Engineering), regarding 'How is the concentration of dissolved oxygen in the feedwater of an auxiliary boiler maintained at acceptable limits', the correct operational principle is: 'Oxygen is liberated by maintaining the highest practical feedwater temperature'.
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