Lapses in construction oversight of the Keystone oil pipeline and gaps in owner TC Energy's standards, policies and administrative controls were the root cause of last year's massive spill into Kansas waterways and property, said a third-party independent analysis released with redacted details.
The report by Ohio engineering consultant RSI Pipeline Solutions was posted by the US Transportation Dept. Pipeline and Hazardous Materials Safety Administration on May 15. Canada-based TC Energy hired the consultant to investigate the leak's casue, with owner-ordered redactions reviewed by the agency that included the name of Keystone's construction contractor and pipe manufacturer.