What is the first step in MFP pre-start checks?

The first step in the pre-start checks of a Main Feedwater Pump (MFP) involves ensuring that valve lineups are complete. This is a crucial step because proper valve alignment ensures that the system's flow path is configured correctly for safe and efficient operation. By confirming that all valves are in their designated positions, operators can prevent issues such as backflow, leaks, or malfunctions in the system that could occur if the pump were to start without proper connectivity to the feedwater system.

Starting with the verification of valve lineups sets a solid foundation for subsequent checks and operations. Once it's confirmed that the valves are appropriately positioned, the other pre-start steps, such as placing the hydraulic system in service or verifying bearing oil flow, can be executed safely. Each of these subsequent checks depends on the initial condition of the valve lineups being correct, emphasizing their importance in the overall pre-start sequence.