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When the pipeline was constructed, a crack formed in a segment of the pipe that was welded to a fitting, TC Energy said in an analysis it submitted to federal regulators. Over time, the crack led to a rupture. The company is implementing a plan to avoid future spills that includes investigating other sites that could be at risk, it said.By clicking on the sign up button you consent to receive the above newsletter from Postmedia Network Inc.
Keystone has leaked more oil than any other pipeline in the U.S. since 2010, spilling more than 25,000 barrels, according to Pipeline and Hazardous Materials Safety Administration data. The conduit’s first phase was commissioned in 2010.
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