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Title: Corrosion pig performance and risk assessment
Category: Pigsource Papers
Downloadable: Yes 
Project No.:
Research Agency:
Catalog No.: pg3251e
Date of Publication: 1996
Price: $25.00 US
Authors: S W Rust, P H Vieth, E R Johnson, and M L Cox
Abstract: It is now quite common to inspect underground pipelines for corrosion damage using "smart" pigs. The high- resolution pigs being used today can identify very large numbers of potential anomalies, requiring sophisticated methodologies for interpreting the results of an in-line inspection. Of particular interest are the detection and accuracy performance characteristics of smart pigs and methods for taking these performance characteristics into account when interpreting in-line inspection results. In this paper, statistical methods are presented and applied to characterize the performance characteristics of several in-line inspection tools employed on the Trans-Alaska Pipeline System, determine the probability that corrosion on underground pipe exceeds a critical magnitude as a function of location, and relate pig performance characteristics to the ability to perform a corrosion risk assessment based on pig data.
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