Hot tap installed on operating sour-gas line

In the winter 1999-2000, Chevron Canada Resources, Calgary, successfully completed a hot tap on the Simonette high-pressure sour gas transmission line near Grande Prairie, Alta.The hot tap was required to bring new production into the Simonette pipeline without shutting in existing production. It was completed under full line pressure and gas-condensate flow with temperatures averaging -20° C.The job demonstrated that such hot tapping on sour gas lines can be completed safely under proper procedures. In this hot tap, Chevron Canada had a technical advantage by having a section of the original pipe, all the line material test reports, and hydrogen-induced cracking (HIC) resistant steel...

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