Alyeska program allows pig performance comparison

Patrick H. Vieth Kiefner & Associates Inc. Steven W. RustBattelle Columbus, Ohio Elden R. Johnson, Michael L. Cox Alyeska Pipeline Service Co. Anchorage Equations for calculating curtical depth of corrosion [61171 bytes] Alyeska Pipeline Service Co. in recent years has conducted numerous in-line inspections (ILIs) of its 800-mile system. Sites most affected by external corrosion have been identified, excavated, and evaluated based on subsequent field measurements of the corrosion. The extensive database that resulted has proven invaluable for evaluating the performance of ILI surveys. This database has provided information necessary for comparing the perfor...

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