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Title: Repair Of Pipelines Under Pressure
Author: L. J. Fast
Source: American Gas Association 1983
Year Published: 1983
Abstract: Repair of pipelines using bands or sleeves can be done safely while the pipeline contains pressure. This paper discusses a welding procedure, including a detailed sequence of welding. The author states that by using this procedure for fillet welds, bands and sleeves have withstood severe hydrostatic tests without failure. For many years. Southern California Gas Company has made repairs to its pipelines while they contain pressure. Before setting forth the background, history, and current procedures used to make such repairs, some information about the Southern California Gas Company transmission system would be appropriate. Southern California Gas Company is the largest natural gas distributor in the United States, as measured by the approximately 3.9 million meters served. The transmission facilities of SoCal stretch from near Fresno in the central part of the State to the California- Arizona border in the southeastern portion of the state. There are over 38,000 miles of pipelines of varying sizes in the SoCal system, including some 3,300 miles of transmission pipelines.

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