Adjusting draft controls without proper training and equipment can cause poor air flow through a boiler.

After blowing down the water column and gauge glass, the water should ___ the gauge glass.

The ___ uses a four-color diamond-shaped sign to display basic information about hazardous materials.

___ prevents blower operation at startup until the damper reaches purge position.

The total force on a safety valve is equal to the ___.

___ prevents blower operation at startup until the damper reaches purge position.

The ___ uses a four-color diamond-shaped sign to display basic information about hazardous materials.

The quick-opening valve is opened first and closed last during blowdown.

Steam that has given up its heat and turned back to water is boiler water.

When using a manometer to measure draft, the difference between the levels of liquid in two legs is the draft measurement.