Exxon Knew Its Ruptured Pipeline Was Old, Defective and Brittle, and Still Added New Stresses

InsideClimate: Since at least 2006, ExxonMobil [3] has known that its 1940s-era Pegasus pipeline had many manufacturing defects like the faulty welds that recently sent crude oil spewing into an Arkansas neighborhood. The company also knew that the seams of the pipe have been identified by the industry as having another dangerous flaw: They are especially brittle, and therefore more prone to cracking. "Having a crack or flaw in a pipeline is a whammy," said Patrick Pizzo [4], a professor emeritus in materials......

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