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Practical Uncertainty Propagation in Corrosion Growth Estimation from Successive In-Line Inspections

Product Number: 51321-16421-SG
Author: Jed Ludlow/Jonathan Hardy
Publication Date: 2021
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$20.00
$20.00

The oil and gas pipeline industry has utilized in-line inspection techniques to assess pipeline integrity for more than 50 years. Successive inspections of the same pipeline can be compared and evaluated to estimate corrosion growth. This paper demonstrates the capabilities and significant benefits of corrosion growth analysis and highlights an enhanced quantitative approach to direct signal comparisons. The propagation of measurement uncertainty into the corrosion growth estimate is considered, including discussing how the overall uncertainty varies depending on whether the same or different in-line inspection tools are used in the successive inspections. Simple statistical techniques that can be applied in actual pipeline integrity practice are emphasized.

Keywords: corrosion growth analysis, in-line inspection, uncertainty

The oil and gas pipeline industry has utilized in-line inspection techniques to assess pipeline integrity for more than 50 years. Successive inspections of the same pipeline can be compared and evaluated to estimate corrosion growth. This paper demonstrates the capabilities and significant benefits of corrosion growth analysis and highlights an enhanced quantitative approach to direct signal comparisons. The propagation of measurement uncertainty into the corrosion growth estimate is considered, including discussing how the overall uncertainty varies depending on whether the same or different in-line inspection tools are used in the successive inspections. Simple statistical techniques that can be applied in actual pipeline integrity practice are emphasized.

Keywords: corrosion growth analysis, in-line inspection, uncertainty

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