‘Horrible’ pipeline defects prompt new rules for Keystone XL construction
Bad welds, dents and damaged coatings discovered at the southern leg of the Keystone XL pipeline have led to safety regulators imposing two extra conditions on the implementation of the project’s northern segment.
The two new conditions have been added to a list of 57, which
project implementers, TransCanada Corp, agreed to three years
ago, AP reports. The federal Pipeline and Hazardous Materials
Safety Administration has thus amended the environmental impact
statement on Keystone XL released by the State Department in
One condition obliges TransCanada to adopt a quality management program to ensure "this pipeline is — from the beginning — built to the highest standards by both Keystone personnel and its many contractors." Another one requires the quality of the construction work to be assessed by a third-party contractor chosen by the government agency.
The defects that prompted the extra rules have been found at a segment of the pipeline that runs from Oklahoma to the Texas Gulf Coast. They were outlined by the pipelines safety agency in warning letters it sent to TransCanada in September 2013.
"From the start of welding, TransCanada experienced a high weld rejection rate," one of the letters said, specifying that over 72 percent of welds required repairs during one week. Another letter spoke of dents in pipelines and also damaged coatings, which resulted in the pipeline being excavated in 98 places to make repairs.
The pipeline safety agency understood the failures stemmed from TransCanada hiring staff lacking the necessary experience and wasn’t always able to implement approved pipeline construction procedures.
The weld failure rate has been described as "horrible"
by Robert Bea, professor emeritus of civil and environmental
engineering at the University of California, Berkeley, who likens
safety requirements for pipelines to those for a nuclear power
"The level of defects is indeed cause for alarm and indicative of something that is going on in the Keystone organization that isn't satisfactory," Bea told AP.
TransCanada has defended itself by saying it discovered and fixed all of the defects itself and by cautioning against drawing parallels between construction of the pipeline’s southern leg and its northern stretch, which is to carry oil from Alberta, Canada, to Nebraska and is still awaiting approval by the White House.
"TransCanada had identified and addressed these issues prior to any product being introduced into the pipeline and reported them voluntarily" to the government, Davis Sheremata, a spokesman for TransCanada said.
The Keystone XL pipeline project has been a highly controversial one with supporters lauding it for the creation of thousands of new jobs and with the US gaining more energy independence, while opponents, citing environmental concerns, say tar sands oil is a particularly “dirty” type of fuel.
In late April, Washington DC witnessed a massive protest against the Keystone XL pipeline, when thousands participated in a six-day event “Reject and Protect”, urging President Barack Obama to ditch the project.
The Obama administration announced on April 18 it was delaying a decision on the Canada-to-Texas pipeline, in order to give federal agencies more time to assess the proposed project. The future of Keystone XL remains uncertain until after November’s mid-term elections.