CALGARY, Alberta, Nov 21 (Reuters) - Enbridge Inc (ENB.TO) said on Sunday its 290,000 barrel-per-day Line 6B carrying Canadian crude oil into the United States will return to service in “a matter of days.”
The pipeline operator said the shutdown would have an impact on shippers but declined to offer further details except to say it was working on mitigating the impact.
The line was shut down on Wednesday evening after a routine smart-pig run detected a potential anomaly, according to trade sources.
The Pipeline and Hazardous Materials Safety Administration, which regulates U.S. pipelines, said Enbridge shut the line as a precautionary measure following recent test results.
The pipeline has been running below capacity in the aftermath of a rupture this summer.
In July, the pipeline spilled 19,500 barrels of crude oil into a Michigan river system and was shut down for nine weeks for repair and inspection.
Reporting by Scott Haggett; Writing by Frank McGurty, editing by Bernard Orr