Bearing metal of non-ferrous material, containing several tin-based alloys, mainly copper, antimony, tin and lead.

A device that is installed to prevent the backwards flow of potentially contaminated water, gas, or other substance into any potable water supply or distribution piping.

A flow through a vessel in the opposite direction of normal flow employed to clean the bed material.

A wall or wall section located in the gas passage used to change the direction of the flue gas flow so maximum heat will be absorbed.

The use of forced and induced draft fans to create a furnace draft at or just below atmospheric pressure.

A holding basin in which variation in flow and composition of a liquid are averaged. Such basins are used to provide a flow of reasonably uniform volume and composition to a treatment unit.

Anti-friction bearings containing races and spherical rolling elements designed to support and locate rotating shafts or parts in machines.

An electromagnetic device used with a gas discharge lamp to control starting and operating conditions.

The non-flammable portion of gas, such as carbon dioxide.

A vessel used to remove the bark from incoming logs in a pulp mill.

Refer to Turning Gear.

A substance, that when dissolved in water, produces hydroxide (OH-) ions.

When an electric generating system consists of several electric generating units and where the first unit is fully loaded at a constant load, and the second generating unit may control the load demand.

Tubular hot water or steam heating elements that have aluminium fins mounted on exterior walls near the floor and covered with vented sheet metal casings.

Process of making steel using a basic type slag.