A feedwater regulator helps control the water level at what specific point?

The feedwater regulator is designed to maintain the optimal operating water level within a boiler system, which is most accurately represented by the Normal Operating Water Level (N.O.W.L.). This level is crucial for the efficient operation of the boiler, ensuring there is enough water for steam generation while avoiding the risks associated with low water levels that could lead to overheating and potential damage.

By controlling the water level at the N.O.W.L., the feedwater regulator ensures that the boiler operates safely and efficiently, preventing issues like water carryover, which can lead to reduced performance and possible damage to engine components. Maintaining the water level at this specific point allows for the appropriate steam generation and ensures reliable operation.

Other options may reference different points in the system, like the feedwater intake, maximum water level, or discharge outlet, but these are not the key operational points managed by the regulator. The focus on the N.O.W.L. is essential for stable boiler operation and overall system efficiency.