New York Low Pressure Boiler COF Practice

Under what condition is a bullseye water sight glass acceptable on a miniature boiler?

1. When there is plenty of space

2. When there is insufficient space for a gage glass

3. When the boiler is not under pressure

4. When the boiler is stationary

The correct answer is: When there is insufficient space for a gage glass

A bullseye water sight glass is specifically designed for use in confined spaces where a traditional gauge glass may not fit due to space constraints. This type of sight glass allows operators to visually inspect the water level in a boiler, ensuring that it is at the appropriate level for safe operation. In scenarios where there is insufficient space for a more sizable gauge glass, the bullseye water sight glass provides a viable alternative, maintaining both safety and operational efficacy. The other options do not accurately address the conditions under which the bullseye water sight glass can be used. Factors such as whether the boiler is under pressure or stationary do not influence the acceptance of this specific type of sight glass. Instead, the design and functionality focus on the physical constraints of the installation environment.