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South Bow said it was watching inclement weather conditions before beginning “a carefully controlled restart” that will include 24/7 monitoring, reduced operating pressures, 

 The federal Pipeline and Hazardous Materials Safety Administration said South Bow restarted the pipeline at a reduced pressure.

The failed section was dug out and replaced and will be taken to a metallurgical lab in Houston for testing, while the repaired pipeline will be tested at different pressures to ensure its integrity, PHMSA said.

The agency's investigation is ongoing. It is unclear what caused the spill.

The company said it has finished all repairs, inspections and testing at the spill site. PHMSA said it signed off on the company's restart plan.

South Bow also said it will put certain pressure restrictions on the pipeline's Canadian sections, and has shared those details with Canadian regulators.

The company's update did not mention a cause of the spill, though the company said it would share investigation findings when available. An employee heard a “mechanical bang" and shut down the pipeline within two minutes, a state spill response official previously said.

 or 147,000 gallons. Vacuum trucks had recovered 1,170 barrels of crude oil, or 49,140 gallons, as of early Friday, according to PHMSA.

The spill occurred in a field north of Fort Ransom, North Dakota, a tiny town in a forested area known for scenic views and outdoor recreation.

The 2,689-mile (4,327 kilometers) Keystone Pipeline carries crude oil from Alberta, Canada, to refineries in Illinois, Oklahoma and Texas.

The pipeline was shut down from Alberta to points in Illinois and a liquid tank terminal Oklahoma, though the line remained open between Oklahoma and Texas' Gulf Coast, according to a map from South Bow.

 helped mute challenges from the pipeline shutdown on gas prices, though diesel prices could still inch up, said Ramanan Krishnamoorti, vice president for energy and innovation at the University of Houston.

Gas prices have fallen in almost every state in the last week due to the oil price drop resulting from the tariff and trade war concerns, said Patrick De Haan, head of petroleum analysis for GasBuddy, which tracks gas prices.

“I wouldn't have expected this to really have much of an impact anyway, but with oil prices actively having plummeted over the last week, yes, I would say that the decline was more than offset,” he said.

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The operator of the Keystone oil pipeline has restarted the system after a spill onto farmland in North Dakota last week shut down the line. South Bow said it was watching inclement weather conditions before beginning “a carefully control restart” Monday that will include 24/7 monitoring and reduced operating pressures.

Keystone Pipeline restarted after oil spill in rural North Dakota

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