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Latest revision as of 19:47, 25 January 2021
Abstract
1993 hazardous liquid pipeline failure in Reston, Virginia and a 1994 gas pipeline failure in New Jersey are thought to have been caused by prior outside damage occurring several years before the failures. The type of damage visible on the pipes consisted of scrapes or gouges and may have been associated with dents caused by some machinery such as backhoe or bulldozer. This report examines the literature associated with dents and gouges in pipelines and similar shell structures. An analysis of rerounding of the damaged area is also carried out. It is concluded that dents in large pipelines are likely to reround under pressure and are, therefore, fairly innocuous. However, gouges and cracks associated with rerounded dents are not innocuous due to the superimposed residual stress field and should be removed if they are detected.
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Published on 01/01/2017
Volume 2017, 2017
DOI: 10.6028/nist.ir.5479
Licence: CC BY-NC-SA license
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