If water comes out of the top try cock, what action must the operator take?

When water comes out of the top try cock, it indicates that the water level in the boiler is too high. This situation can lead to issues such as water carryover into the steam system, which can damage equipment and create safety hazards. The primary action the operator should take in this scenario is to perform a blowdown of the boiler.

Blowdown involves draining a portion of the water from the boiler to lower the water level. This action not only reduces the water level to a safe operating range but also helps remove sediments and impurities that can accumulate in the boiler water, ensuring more efficient operation and safety. By carrying out a blowdown, the operator is effectively addressing the immediate concern of an overly high water level, maintaining both the operational integrity of the boiler and safety standards.