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___ combines with oxygen to form sodium sulfate, which accumulates at the bottom of a boiler.

A ___ is a control that functions as the mastermind of a burner control system to control the firing cycle.

A boiler has a lower efficiency when it operates longer without shutdown.

A boiler has a lower efficiency when it operates longer without shutdown.

A ___ is used to record information regarding operation of a boiler during a given period of time.

___ is the process of evacuating (discharging) water and undesirable accumulated material from a boiler.

___ is the process of evacuating (discharging) water and undesirable accumulated material from a boiler.

A main steam stop valve should be closed during normal plant start-up.

A primary pollutant is a pollutant formed from the interaction between two or more secondary pollutants.

A primary pollutant is a pollutant formed from the interaction between two or more secondary pollutants.