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Title: Acoustic Emission Testing Of In-Service High Pressure Natural Gas Pipelines-The Australian Experience
Author: T. R. Baker
Source: American Gas Association 1984
Year Published: 1984
Abstract: In July 1982 the Moomba to Sydney pipeline suffered an in-service stress corrosion cracking failure at a point about 2.5 miles (4.2 kilometres) downstream from the gas treatment plant at Moomba in the Cooper Basin gas Held in South Australia. In the interest of safety and security of supply, a 6-mile (1O-kilometre) by-pass pipeline was constructed around the failure site and the first 6 miles (10 kilometres) of the original pipeline was taken out of service. It was considered necessary to check the integrity of the section of the original pipeline which was still in service and which was considered to be most prone to a future failure. Because the pipeline could not be taken out of service, an investigation of the available methods of non-destructively testing an in-service natural gas pipeline was undertaken. The decision was made to conduct an acoustic emission test of the in-service pipeline using the flowing gas as the pressuring medium.

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