New York Low Pressure Boiler COF Practice

What is the likely result of clogged strainers in the discharge and supply lines?

1. Overpressure

2. Deep vacuum

3. Increased flow

4. Reduced efficiency

The correct answer is: Deep vacuum

Clogged strainers in the discharge and supply lines can significantly impede the flow of water or steam in a boiler system, leading to various operational issues. When strainers become blocked, the path for water or steam to circulate is obstructed, which can create resistance in the system. This resistance can lead to a situation where a vacuum is created, particularly if the system attempts to draw fluid into areas that are restricted by the blockage. As the flow becomes restricted, it may seem like it would lead to increased flow; however, the opposite happens. The system struggles to maintain adequate pressure and may enter a condition of deep vacuum, which can affect the overall performance of the boiler. This can lead to cavitation, where the pressure drops too low, potentially causing damage to the pump and other components. In terms of efficiency, clogged strainers typically lead to a decrease in operational efficiency, as the system has to work harder to push fluids through the impediment. Therefore, while the rise of deep vacuum is a critical concern that arises directly from clogged strainers, it is essential to understand that the underlying issue will ultimately result in reduced efficiency, increased wear and tear on equipment, and can lead to more severe mechanical failures.