Definition - What does Transmission Line mean?
A transmission line is a large pipe that carries natural gas long distances across a national utility infrastructure. It is used to transport natural gas as part of a huge system of pipelines, often across state boundaries. Trenchless construction is used to install pipes in the natural gas pipeline network.
Trenchlesspedia explains Transmission Line
The 2.4-million miles underground pipeline system that transports natural gas in the United States has been compared to the interstate highway system. Large steel pipes from 2 to 42 inches in diameter carry gas at 200 to 1,200 psi. The gas is unodorized in transmission lines, and the pipelines are federally regulated.
A gas transmission is one type of pipeline used in the natural gas system. Other types include flowlines, gathering lines, distribution lines, and service lines. Transmission lines carry natural gas between storage facilities and distribution centers.