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Title: Detection of active corrosion from repeated ILI runs
Category: Pigsource Papers
Downloadable: Yes 
Catalog No.: pg3512
Date of Publication: Feb 1 2010 12:00AM
Price: $25.00 US
Authors: Guy Desjardins
Abstract: Repeated in-line inspections (ILI) of transmission pipelines have been used for many years to estimate corrosion rates. However, the calculation of a corrosion rate from a direct comparison of ILI anomalies is often contaminated with ILI measurement errors. An alternative to assessing a corrosion rate may be to use repeated in-line inspections to detect the presence of active corrosion by examining various statistical properties of the data. These statistics do not estimate corrosion rate, but they can indicate the presence of active corrosion. Once the active corrosion has been identified, the operator is then able to address each location.
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