What is the suction source for the StartUp Feed Pump?

The StartUp Feed Pump is designed to draw water from specific sources to ensure proper operation during the startup phase of a thermal power plant. The correct choice, which identifies the suction source correctly, is the system that provides clean and conditioned water suitable for feeding into the steam generator.

When referring to the suction from the S/G blowdown regeneration heat exchanger, this setup is beneficial because it utilizes a source of water that has been treated through the process of blowdown regeneration. This process allows for the reuse of water that has already been through the steam cycle, thus conserving resources and maintaining system efficiency. By using water from this heat exchanger, the StartUp Feed Pump ensures that it receives water that has been preheated, removing the need for additional heating and improving the pump's efficiency during startup conditions.

In a thermal power plant, choosing the right source for suction is vital; it affects not only the operational efficiency but also the overall dynamics of the plant during startup. This emphasizes the importance of knowing which sources are appropriate for different equipment within the system.