Pipeline Investigation P17H0019

Pipeline leak

Table of contents

The occurrence

On 20 March 2017, at approximately 15:45, Enbridge discovered light synthetic crude on an unnamed waterway at the Edmonton Terminal. It is estimated that approximately 10 cubic meters (m³) of light synthetic crude was released from a tank, of which 7 m³ was captured by the tank's secondary containment, and 3 m³ was released into the company's water drainage system. The released product was cleaned up. The TSB is investigating.

Map of the area


Photo of Manuel Koutchounian

Before joining the TSB in 2011, Manuel Kotchounian worked nearly 10 years at Transport Canada, where he held various positions including remedial measures specialist and means of containment specialist. Prior to that, Mr. Kotchounian worked at the National Energy Board as a senior pipeline engineer, providing technical expertise in public hearings, inquiries, and investigations related to pipelines and public safety, acquiring experience in regulatory affairs and technical matters pertaining to pipelines, pressure vessels, tank cars, and dangerous goods. Mr. Kotchounian holds a Bachelor of Engineering and a Master of Applied Sciences from l'École Polytechnique de Montréal, and is a registered professional engineer in Ontario.

Transportation Safety Board investigation process

There are 3 phases to a TSB investigation:

  1. Field phase: a team of investigators examines the occurrence site and wreckage, interviews witnesses and collects pertinent information.
  2. Examination and analysis phase: the TSB reviews pertinent records, tests components of the wreckage in the lab, determines the sequence of events and identifies safety deficiencies. When safety deficiencies are suspected or confirmed, the TSB advises the appropriate authority without waiting until publication of the final report.
  3. Report phase: a confidential draft report is approved by the Board and sent to persons and corporations who are directly concerned by the report. They then have the opportunity to dispute or correct information they believe to be incorrect. The Board considers all representations before approving the final report, which is subsequently released to the public.

For more information, see our Investigation process page.



Pipeline Investigation Report P17H0019
Crude oil leak
Enbridge Pipelines Inc.
Edmonton North Terminal
Sherwood Park, Alberta
20 March 2017

Media materials

News release

Lack of detailed inspection procedures contributed to a March 2017 crude oil leak at the Enbridge Terminal in Sherwood Park, Alberta
Read the news release

Deployment notices

TSB deploys a team of investigators to a pipeline occurrence at a storage facility near Edmonton, Alberta
Read the deployment notice