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The Transportation Safety Board of Canada (TSB) stated that the lack of accurate on-the-ground pipeline measurements has contributed to the rupture of a pipeline in the east of Canada. Edmonton last year
. The pipeline owned by TransCanada Grand Rapids was struck and punctured during the construction of the TransCanada Grand Rapids Pipeline.
The pipeline transports crude oil from the Fort McMurray area to the terminals at Edmonton and Heartland.
Approximately 1,000 cubic meters of crude oil condensate was discharged into a nearby excavation pit, where construction work was underway in an industrial area of Strathcona County, at the time of the construction. is from Edmonton
. caused the damage. The team was digging a pbadage for the new pipeline when Line 2A was accidentally struck
"Opportunities were missed"
A Transportation Safety Board investigation, released Monday, determined that the
measurements taken from an adjacent pipeline were used instead, badumptions were made about the location of pipeline crossings in the area, and a path incorrect drilling was chosen, the TSB "If the detailed procedures for the amendment of crossing agreements are not established and complied with, all crossed pipelines can not be accurately identified, which increases the risk of". damaging a pipeline during a disturbance, "says the TSB report. .
"If critical information on the location of crossed pipelines is not obtained and shared with all parties involved, an incorrect drill path may be established, increasing the risk of damage to the pipeline during horizontal directional drilling. . "
Since the access ramp was not removed to visually inspect the pipeline, no ground measurements were made to confirm the exact position and depth, concluded the TSB. .
Although a confirmation of depth of the underground pipeline was not completed, a daily safety checklist for the construction project incorrectly indicated that the inspection had been done.
"In addition, a check list of ground disturbances was completed early in the shift incorrectly indicated that a visual confirmation of the depth had been made for all pipelines to cross," reads In the TSB report
"As a result, there were missed opportunities to further evaluate the drilling path.Enbridge launched an internal review of the communication procedures, including clarification and the harmonization of technical terminology related to pipeline crossings
GRP Ltd. has improved pipeline routing procedures and checklists and has provided other direction to employees.
Most of the released product was recovered Nobody was injured in the breakup
The TSB investigates incidents or incidents s involving pipelines crossing provincial or international borders and may make recommendations.
The National Energy Board continues to monitor corrective actions taken at the spill site.
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