The Transportation Safety Board of Canada says undetected cracks were responsible for an Enbridge natural gas pipeline rupture that resulted in an explosion and fire northeast of Prince George, B.C. in October 2018.
No one was injured in the incident but 125 people had to be evacuated and the outage led to province wide natural gas shortages.
Safety board lead investigator Jennifer Philopoulos says Enbridge subsidiary Westcoast Energy, the pipeline operator, was aware of the risk but its plan to manage that risk turned out to be insufficient.