Where does the MFP turbine exhaust go?

The correct answer is that the MFP (Main Feed Pump) turbine exhaust goes to the IP (Intermediate Pressure) condenser hotwell. This is because the MFP turbine is designed to generate mechanical energy to drive the feed pump, and during this process, it produces exhaust steam. The exhaust steam is then routed to the IP condenser hotwell, where it can condense back into water. This is crucial for maintaining the efficiency of the feedwater system, as the water can then be returned to the system for reheating and reuse, promoting effective thermal management within the power plant.

Routing the exhaust steam to the hotwell also helps maintain the pressure and temperature levels necessary for the operation of the system. This step is essential in keeping the cycle efficient and ensuring that the condensate is effectively utilized, reducing waste and improving overall operational efficiency. In contrast, sending the exhaust to the cooling tower, atmosphere, or main steam line is not standard practice as it could disrupt the system's effectiveness and lead to energy loss.