From which component does the main feed booster pump draw suction to feed water?

From which component does the main feed booster pump draw suction to feed water?

• A. Deaerating Feed Tank (DFT).
• B. Economizer.
• C. Desuperheater.
• D. Boiler drum.

Answer: (A)

The main feed booster pump draws suction from the Deaerating Feed Tank. This tank provides deaerated, preheated water stored at a stable level, which ensures low dissolved gases and a reliable suction head for the pump. The other components play different roles in the cycle—an economizer preheats water but isn’t a reservoir for suction, a desuperheater adds water to reduce steam temperature, and the boiler drum is where steam forms, not a feedwater suction source.

The main feed booster pump draws suction from the Deaerating Feed Tank. This tank provides deaerated, preheated water stored at a stable level, which ensures low dissolved gases and a reliable suction head for the pump. The other components play different roles in the cycle—an economizer preheats water but isn’t a reservoir for suction, a desuperheater adds water to reduce steam temperature, and the boiler drum is where steam forms, not a feedwater suction source.