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Plate-and-shell exchangers usually consist of a cylindrical shell containing a heating or cooling fluid.

When performing a bottom blowdown, the valve closest to the boiler is always opened ___.

Pre-treatment equipment commonly includes ___.

A compression tank is normally full of water to feed into the boiler during a low water condition.

An ear muff is a device inserted into the ear canal to reduce the level of noise reaching the eardrum.

The NFPA Hazard Signal System colors and numbers identify potential health (blue), flammability (red), reactivity (___), and special hazards (no special color).

A(n) ___ is a cooling system that chills water for cooling.

The NFPA Hazard Signal System colors and numbers identify potential health (blue), flammability (red), reactivity (___), and special hazards (no special color).

The condition of water column piping is determined by removing boiler cross tee plugs.

A typical vacuum pump serving a condensate system is a ___-compartment condensate vessel, divided horizontally.