If there is an overpressure condition in a boiler, then the water level controls have failed.

To correct a high water condition, a ___ is performed to bring the water level to the NOWL.

When a boiler that has been producing steam is taken off-line, steam in the boiler cools and condenses, creating a ___.

Water that contains large quantities of dissolved minerals is called ___.

A boiler’s ___ is the highest pressure in pounds per square inch (psi) at which it can be safely operated.

A hydrostatic test is a steam test used to check for boiler leaks.

Area source boilers emit only small amounts of pollutants, primarily because most burn natural gas.

The safety valve on a low pressure boiler is designed to open when pressure in the boiler exceeds the ___.

Class D fires are fires that burn wood, paper, textiles, and other dry materials containing carbon.

The safety valve on a low pressure boiler is designed to open when pressure in the boiler exceeds the ___.