MFP EBOP will auto start when bearing pressure is less than which value?

In the context of Main FeedWater Auxiliary Equipment, the autostart function of the Main Feedwater Pump (MFP) Emergency Backup Oil Pump (EBOP) is crucial for maintaining system integrity and ensuring reliable operation during pressure fluctuations. The specified value of 20# (pounds per square inch, psi) as the threshold for autostart indicates that when the bearing pressure drops below this level, it may signify inadequate lubrication and potential risk of damage to pump components.

The EBOP is designed to automatically engage when the bearing pressure reaches this point to safeguard the operation of the MFP. This proactive measure extends the life of the pump and prevents costly downtimes or catastrophic failures, which can happen if the bearings are not adequately lubricated. The selection of 20# reflects a balance between being responsive to pressure changes while providing enough buffer to prevent unnecessary cycling of the EBOP, which could lead to wear and tear on its own components.

Therefore, understanding that the EBOP activates when the bearing pressure drops below 20# is essential for operators to ensure that critical systems remain functional and that they are prepared to respond to varying operational conditions effectively.