Which of the pumps listed operates at constant speed and delivers water to the deaerating feed tank at a nearly constant pressure?
Official USCG Answer & Rule Citation
Correct Answer: Option A — Main condensate pump
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.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.