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When the pipeline was constructed, a crack formed in a section of pipe that was welded to the installation, TC Energy said in an analysis it filed with federal regulators. Over time, the crack led to a rupture. She added that the company is implementing a plan to avoid future spills, which includes investigating other sites that may be at risk.
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A section of the massive pipeline, which can carry more than 600,000 barrels a day, had its worst ever leak on December 7. The canal has been out of action for more than three weeks, disrupting crude oil markets and limiting supplies to the storage hub at Cushing. Oklahoma, the reference point for US oil prices. More than 13,000 barrels were spilled, with some of the oil entering a local creek.
Keystone has spilled more oil than any other pipeline in the United States since 2010, spilling more than 25,000 barrels, according to Pipeline Safety and Hazardous Materials Administration data. The first phase of the canal was commissioned in 2010.
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After the Keystone spill, Canada is concerned about pipeline capacity
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![Keystone Steel City Pumping Station in Steel City, Neb. New pipeline restrictions are likely to be imposed to limit flows.]()
Keystone was ordered to lower operating pressures after the oil spill
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![TC Energy said it would cost $650 million to clean up the oil spill at the Keystone pipeline in Kansas, one of the few headwinds the pipeline operator had to contend with in its most recent quarter.]()
TC Energy beats earnings estimates as demand offsets costs from the oil spill
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