The TSB has completed this investigation. The report was published on 21 March 2022.
Table of contents
Main-track train derailment
Canadian National
Mile 547.0, Chetwynd Subdivision
North of Anzac, British Columbia
The occurrence
On , a Canadian National freight train derailed while proceeding southward at Mile 547 of the Chetwynd Subdivision, north of Anzac, British Columbia. An inspection revealed that 38 cars had derailed, including 2 residue tank cars that last contained sodium hydroxide solution and hydrogen peroxide. There were no injuries and no leaks.
Media materials
News releases
Investigation report: Main-track train derailment north of Prince George, British Columbia in June 2021
Read the news release
Investigation information
Download high-resolution photos from the TSB Flickr page.
Class of investigation
This is a class 4 investigation. These investigations are limited in scope, and while the final reports may contain limited analysis, they do not contain findings or recommendations. Class 4 investigations are generally completed within 220 days. For more information, see the Policy on Occurrence Classification.
TSB investigation process
There are 3 phases to a TSB investigation
- Field phase: a team of investigators examines the occurrence site and wreckage, interviews witnesses and collects pertinent information.
- 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.
- 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.
The TSB is an independent agency that investigates air, marine, pipeline, and rail transportation occurrences. Its sole aim is the advancement of transportation safety. It is not the function of the Board to assign fault or determine civil or criminal liability.