Engineering · Steam — Feed System
A deaerating feed tank (DA tank) is used to:
- ACool the feedwater
- BRemove dissolved oxygen and other gases from the feedwater✓ Correct
- CStore fuel oil
- DIncrease boiler pressure
Explanation
A deaerator heats feedwater with steam and scrubs it to drive off dissolved oxygen and CO2, which would otherwise cause corrosion and pitting in the boiler and feed system.
Authority: Steam Plants (USCG engineering topic)
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