What does "boiler water carryover" indicate?

"Boiler water carryover" refers specifically to the unintentional displacement of boiler water into the steam system. This phenomenon occurs when a portion of the liquid water in the boiler is carried along with the steam due to various factors such as turbulence caused by steam generation, poor water quality, or improper operation conditions.

When carryover occurs, it can lead to the introduction of impurities, such as dissolved solids or contaminants, into the steam system. This can create serious issues, including damage to steam traps, turbines, and other equipment downstream, ultimately affecting the efficiency and reliability of the entire steam system. It is important for operators to manage water chemistry and maintain appropriate operating conditions to minimize the risk of carryover.

The other options do not accurately describe carryover. The intentional transfer of water to steam is part of normal boiler operation, but carryover is unintentional. The accumulation of steam in the boiler can occur without carryover, as it refers to steam build-up not involving liquid water exit. Lastly, the purification of water through evaporation describes the process of separating impurities from water, but this differs from the unintended movement of boiler water into the steam system.