USCG USCG Steam
Set 11 • Question #61 of 496
Launch Interactive Practice Room Discharging an excessive amount of cold water into the DC heater during normal steaming conditions could cause __________.
A
flashing at the feed pump suction
B
excess oxygen in the feedwater
✓ Correct Answer
C
water hammer in the economizer
D
increased back pressure
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.
Question Discussion & Notes
0Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.
Loading mariner discussions...