Which line supplies water from the feedwater tank to the feedwater pump?

• A. Boiler Feed Line
• B. Feedwater Pump Suction Line
• C. Condensate Return Line
• D. Service Water Line

Answer: (B)

The line that supplies water from the feedwater tank to the feedwater pump is known as the Feedwater Pump Suction Line. This line plays a critical role in ensuring that the feedwater pump has a continuous supply of water to pressurize and deliver into the boiler system.

When the feedwater pump operates, it relies on the suction line to draw water from the feedwater tank. The design of the suction line is such that it needs to maintain a certain pressure to ensure the pump can operate efficiently and effectively. Proper functioning of this line is essential for the overall performance of the boiler system, as it directly impacts the availability of water to be heated and converted into steam.

In contrast, the Boiler Feed Line typically refers to the line that directs water from the pump to the boiler, the Condensate Return Line pertains to the pipeline that carries condensate back to the feedwater tank from the system, and the Service Water Line is used for supplying non-process-related water for general service purposes.