___ is the exposure to highly alkaline elements, causing boiler metal corrosion at stress zones.

The scales used on diaphragm gauges vary from hundredths of an inch to several inches of ___, depending on the pressure being measured.

In a system with a feedwater regulator, condensate returns through the condensate return line to the condensate return tank.

An automatic nonreturn valve is constructed of a piston in a cylinder with a stem and handwheel.

A(n) ___ is a device worn over the ears to reduce the level of noise reaching the eardrum.

One of the most common types of heat exchangers in industrial applications is a ___ heat exchanger.

All plants maintain boiler room logs for an 8-hour period.

All valves are opened during dry layup to prevent moisture from entering the boiler.

All plants maintain boiler room logs for an 8-hour period.

The American National Standards Institute (ANSI) is a national standards organization that helps identify industrial and public needs for national standards.