USCG USCG Steam
Set 9 • Question #477 of 496
Launch Interactive Practice Room Flooding of the DC heater, due to the addition of excessive makeup feed, is normally corrected by the use of __________.
A
a condensate pressure regulating valve
B
a thermostatic steam regulating valve
C
the feed pump recirculating line
D
a manual or automatic dump valve to the reserve feed tank or distilled tank
✓ Correct Answer
USCG NMC Regulatory Explanation
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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