TransCanada restarts Keystone as investigation continues in South Dakota

TransCanada restarts Keystone as investigation continues in South Dakota

TransCanada has restarted the Keystone pipeline after being taken offline for almost two weeks due to a spill that occurred in South Dakota.

A preliminary report from the US Pipeline and Hazardous Materials Safety Administration (PHMSA) suggests the leak occurred at a section of pipe that may have been damaged during construction in 2008, when a weight was installed on the pipe to prevent buoyancy issues in waterlogged zones. PHMSA has since issued a Corrective Action Order, mandating the line operate 20% below its normal rated pressure.

TransCanada did not provide a timeline for Keystone's return to normal but says it is monitoring the system as it ramps up to full capacity. Remediation continues on site as the company conducts its own investigation into the exact cause of the pipeline failure.

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