What occurs as the strainer becomes dirty in the MFW pump seal water supply system?

As the strainer becomes dirty in the Main Feed Water (MFW) pump seal water supply system, the pointer rotates due to backpressure. This occurs because a dirty strainer restricts the flow of the water passing through it, leading to an increase in pressure upstream of the strainer. The pressure buildup manifests as backpressure, which influences various indicators and instruments in the system.

In this scenario, the pointer, likely associated with a pressure gauge or flow meter, reflects this change in pressure, indicating that something is amiss. Proper monitoring of this backpressure is essential for maintaining system integrity and performance, as it can signal that maintenance is needed to clean or replace the strainer, ensuring that the seals can operate effectively and preventing potential damage to the pump or other components.

The other options reflect conditions that may not typically occur as a direct result of a dirty strainer in the seal water supply system. For instance, while a rise in temperature might be a consequence of other operational issues, it is not a standard indicator resulting directly from a dirty strainer. Similarly, an automatic system shutdown is less likely to happen solely due to a dirty strainer, and an increase in flow would contradict the expected behavior when resistance is encountered due to str