The Keystone pipeline has ruptured following a large bang. (Image: -)
The Keystone pipeline - an oil pipeline system in Canada and the United States - ruptured and was spilling oil after a large bang, which was reported around 7.45am local time, according to Bill Suess, Program Manager for the North Dakota Department of Environmental Quality. He confirmed the size and cause of the spill were being investigated.
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Liquid pipeline business South Bow, which has managed the pipe since 2024, said its control centre had detected a pressure drop when the rupture occurred and responded with a shutdown shortly after.
It said the affected segment had now been isolated.
Shariq Khan, oil reporter for Reuters, wrote on X: "Keystone pipeline to be shut until tomorrow at least after rupture in North Dakota, state's department of environmental quality said."
Program Manager for the North Dakota Department of Environmental Quality, Bill Seuss, said the authorities are working fast to clean up the spill.
"They’re reporting it as a small area. I don’t have a size in acreage yet. It is confined to a field. The DEQ is responding to the site. The EPA has informed us somebody will be up to check it out," he said.
The pipeline stretches 2,687 miles across Canada and the US and it is used to deliver oil from Alberta to Houston and Patoka - in the states of Texas and Illinois, respectively.
The original Keystone Pipeline (Phase 1) began operation in 2010 and runs from Hardisty, Alberta, through Manitoba and North Dakota, to Steele City, Nebraska.
Phase 2 extended the system south from Nebraska to Cushing, Oklahoma.
Phase 3, also known as the Gulf Coast Pipeline, connects Cushing to refineries in Port Arthur and Houston, Texas, and went online in 2014.