The DC heater automatic level dump valve is used to __________.
Official USCG Answer & Rule Citation
Correct Answer: Option A — drain excess feed water to the distilled water tank
The Deaerating Feed Tank (DFT / DC Heater) scrubs dissolved oxygen and non-condensable gases from boiler feedwater using direct contact steam heating, preventing localized oxygen pitting corrosion in economizers and steam drums.
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