USCG USCG Steam
Set 6 • Question #406 of 496
Launch Interactive Practice Room The DC Heater functions to __________.
A
store, heat, and deaerate feedwater
✓ Correct Answer
B
chemically treat feedwater to remove carbonic gas
C
ensure recirculation in the feedwater system
D
remove the major amount of non- condensable gases from the main condenser
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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