The system is used to help operators and maintenance personnel locate utility system features or structures and to assist with the scheduling and performance of maintenance activities. For example, a gage might measure the elevation of a water surface, the velocity of flowing water, the pressure of water, the amount or intensity of precipitation, and the depth of snowfall. Gages also are used to determine the location or position of equipment during installation and after operation. The pressure within a closed container or pipe as measured with a gage. An electrolytic cell capable of producing electric energy by electrochemical action.
Galvanization is the process of coating a metal with zinc.
Garnet has a higher density than sand. The conversion of soluble and suspended organic materials into gas during aerobic or anaerobic decomposition. In clarifiers the resulting gas bubbles can become attached to the settled sludge and cause large clumps of sludge to rise and float on the water surface. In anaerobic sludge digesters, this gas is collected for fuel or disposed of using a waste gas burner. A movable watertight barrier for the control of a liquid in a waterway.