New York Low Pressure Boiler COF Test 2026 – 400 Free Practice Questions to Pass the Exam

The primary function of boiler blowdown is to control dissolved solids in the water. Over time, the process of boiling water can concentrate contaminants and dissolved solids within the boiler. These impurities can lead to a variety of issues, such as scaling on the heat transfer surfaces, reduced efficiency, and potential damage to boiler components. By periodically performing blowdown, excess water that contains a high concentration of these dissolved solids is removed, helping to maintain water quality. This practice ensures that the boiler operates efficiently while minimizing the risk of damage from corrosion or scaling, which can significantly prolong the lifespan of the boiler and maintain its operational efficiency.

Controlling dissolved solids is essential for both safety and performance, which underscores why this choice is the correct answer in the context of boiler operation.