How is Low Pressure lube oil at 20# supplied in the MFP system?

In the context of the Main FeedWater Auxiliary Equipment system, low-pressure lube oil is supplied to various components, including bearings and other lubrication points, to ensure their proper functioning and longevity. The correct choice indicates that both the pump bearing and manual pressure reducing throttle valves contribute to the supply of low-pressure lube oil.

The pump bearings require a steady supply of lubricating oil to minimize friction and wear. Low-pressure lubrication helps to maintain the proper functionality of the bearings by ensuring a consistent oil flow.

Additionally, manual pressure reducing throttle valves play a crucial role in regulating the oil pressure in the system. These valves allow operators to adjust the pressure of the lubricant according to the specific needs of the machinery. This makes it possible to deliver the lube oil at the desired low pressure while ensuring that the pump bearings and other equipment receive adequate lubrication without exceeding pressure specifications.

Considering the operation of both components, it is clear that a combined approach — utilizing both the pump bearing and the manual throttle valves — is necessary for the effective and safe supply of low-pressure lube oil in the system.