TC Energy says Keystone oil spill caused by fatigue crack

Emergency crews work to clean up the largest U.S. crude oil spill in nearly a decade, following the leak at the Keystone pipeline operated by TC Energy in rural Washington County, Kansas, U.S., December 9, 2022. REUTERS/Drone Baseon Friday said a 14,000-barrel oil spill from its Keystone pipeline in rural Kansas in December was primarily due to a progressive fatigue crack, which originated during the construction of the pipeline.

Keystone's spill into a Kansas creek was the biggest U.S. oil spill in nine years and prompted a 21-day shutdown of a portion of the 622,000 barrel-per-day pipeline, which ships crude from Alberta to U.S. refineries.TC said it has recovered 98% of the spilled product from the pipeline and cleaned up 90% of the Mill Creek shoreline.

The company said it is now investigating other sites along Keystone with similar characteristics, performing extra inspections on 300 miles of the pipeline, and reviewing design guidelines, construction and operations.

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