Inspectors at the US Department of Transportation’s Pipeline and Hazardous Materials Safety Administration (PHMSA) observed TransCanada’s contractors violating construction design codes established to ensure a pipeline’s safety, according to inspection reports released to DeSmog under the Freedom of Information Act (FOIA).

Evan Vokes, former TransCanada materials engineer-turned-whistleblower, told DeSmog the problems uncovered in the reports show issues that could lead to future pipeline failures and might also explain some of the failures the pipeline had already suffered.

Vokes claimed PHMSA was negligent in failing to use its powers to shut down construction of the pipeline when inspectors found contractors doing work incorrectly. “You cannot have a safe pipeline without code compliance,” Vokes said.

The Keystone and the Cushing Extension are part of TransCanada’s Keystone Pipeline network, giving the company a path to move diluted Canadian tar sands, also known as dilbit, to the U.S. Gulf Coast.

The Keystone pipeline network is made up of the Keystone Pipeline (Phase I), that runs from Hardistry, Alberta, to Steele City, Nebraska, and the Keystone-Cushing extension (Phase ll), from Steele City to Cushing, Oklahoma. There, it connects to the southern route of the Keystone XL, renamed the Gulf Coast Extension (Phase III), that runs from Cushing, Oklahoma to the Gulf Coast in Texas.

The final phase of TransCanada’s network, the Keystone XL, (Phase lV), originating in Alberta, is meant to connect to the Gulf Coast pipeline. But KXL is blocked for now since President Obama rejected a permit TransCanada needs to finish its network.

…click on the above link to read the rest of the article…