Combustible gas indicator (CGI) A portable instrument used in leak detection to determine accurately the methane content in a given area. Coincident demand The sum of two or more demands which occur in the same time interval. Low-Btu gas may range as low as 200 Btu per cubic foot. High-Btu gas is similar to natural gas and will range in energy content from 900 to 1,000 Btu per cubic foot. The gas produced may be either a high-Btu orĪ low-Btu fuel. Coal gasification The conversion of coal into a gas which is suitable for use as a fuel. City gate Meter stations which serve as designated point(s) on a distribution system where the distributor takes delivery of its gas Calorimeter Devices used extensively in measuring the quantity of the heat content of natural gas. 6 fuel oil A heavy residual fuel oil used by ships, industry, and for large-scale heating installations. Bottled gas Ordinarily butane or propane, or butane and propane mixtures, liquefied and bottled under pressure for domestic use. A billing cycle comprises the time from the date the first customer of the group is read until the last customer is read. Generally distributed over a period of time (one or two months).
Billing cycle The time interval during which all meters of a class or sub-class of customers are read. Testing the atmosphere in the holes for the presence of gas with a combustible gas detector or other suitable device. Bar hold test surveys Leakage surveys made by driving or boring holes at regular intervals along the route of an underground gas pipe and
Back fill The material used to refill a ditch or other excavation, or the process of doing so. Anode The positive pole or electrode of an electrolytic cell anodes are attached to steel pipelines to prevent corrosion. Active Corrosion Continuing corrosion of pipeline facilities, which unless controlled, could result in leaks. Gas AGA Abbreviation for American Gas Association, the trade association of the gas distribution and transmission industry. They are grouped under headings indicating the context in which they usually are used.Ī. It is not intended to be all-inclusive, but rather as an introduction in plain language to the meaning of some otherwise arcane sets of initials and combinations of words. The following are entries for a selected glossary of terms used in the regulation and operation of utilities.
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