A hot water boiler relief valve is rated in ___ relieved per hour.

There are many designs of heat exchangers, but the common element is a relatively thin barrier separating the cooling or heating fluid from the process fluid.

According to the ASME Code, a try lever test on a safety valve should be performed every ___ the boiler is in operation and after any period of inactivity.

Dry layup is recommended for boilers that will be out of service for an extended period.

Water contains less heat energy (by weight) than steam.

Dry layup is recommended for boilers that will be out of service for an extended period.

Water contains less heat energy (by weight) than steam.

A ___ system provides the air necessary for combustion.

___ boilers do not retain any water internally except for what is in the heat exchanger coil.

Protective ___ protect workers by resisting penetration and absorbing the blow of impact.