The owner of the Keystone pipeline says the line has returned to service after a breach that leaked an estimated 1.4 million litres of oil in northeastern North Dakota late last month.
TC Energy Corporation says the move follows the approval of its repair and restart plan by the U.S. Pipeline and Hazardous Materials Safety Administration, which ordered the line shut until the Canadian company completed corrective action.
The company says it will operate the pipeline at a reduced pressure with a gradual increase in the volume of crude oil moving through the system.
The line, which began operating in 2011, is designed to carry crude oil from Alberta across Saskatchewan and Manitoba, and through North Dakota, South Dakota, Nebraska, Kansas and Missouri on the way to refineries in Patoka, Ill. and Cushing, Okla.
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