The acronym DFT stands for which component?

The acronym DFT stands for which component?

• A. Deaerating Feed Tank
• B. Direct Fuel Tank
• C. Deaerated Feed Tank
• D. Deaerating Filter Tank

Answer: (A)

Deaerating Feed Tank is the vessel that both stores feedwater and removes dissolved gases before it reaches the boiler. In a ship’s steam system, feedwater must be deaerated to prevent corrosion from oxygen and carbon dioxide, so the feedwater passes through a deaerator where it’s heated and vented of non-condensables. The tank portion stores this treated water and provides a steady, pressurized supply to feed pumps and the boiler, ensuring reliable operation even as condensate returns vary. That combination of heating/deaeration plus storage is why the name Deaerating Feed Tank fits best. The other phrases describe different concepts (fuel storage, or water that’s already deaerated, or a different kind of tank) and don’t match the function of this component in the feedwater system.

Deaerating Feed Tank is the vessel that both stores feedwater and removes dissolved gases before it reaches the boiler. In a ship’s steam system, feedwater must be deaerated to prevent corrosion from oxygen and carbon dioxide, so the feedwater passes through a deaerator where it’s heated and vented of non-condensables. The tank portion stores this treated water and provides a steady, pressurized supply to feed pumps and the boiler, ensuring reliable operation even as condensate returns vary. That combination of heating/deaeration plus storage is why the name Deaerating Feed Tank fits best. The other phrases describe different concepts (fuel storage, or water that’s already deaerated, or a different kind of tank) and don’t match the function of this component in the feedwater system.