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 ___.

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

Scale and sediment cause pitting of boiler metal surfaces.

A surge tank generally includes an automatic water makeup system with a float chamber that is located at the minimum water level.

A ___ is a device that sends a signal to a controller, such as a programmable logic controller or other digital controller.