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Safety critical assessments and incident investigations are continuing. Read the latest COVID-19 information.

Incident Investigations

As part of Technical Safety BC's commitment to share safety information with clients and the public, we share our incident investigation summaries. The investigations are documented in our enhanced incident investigation report format and organized by technology.

When does Technical Safety BC investigate?
  • When regulated work or regulated equipment is involved
  • When evidence is available to help determine causes and contributing factors
  • Where a learning opportunity exists to understand and document what caused the incident, and to inform prevention of similar incidents.
When does Technical Safety BC not investigate?
  • Where a regulated product or work is not involved
  • Where there is no evidence of regulated equipment being involved, or it has been ruled out.
  • It does not meet the definition of an incident
  • Evidence of cause or contributing factors is poor or non-existent.
Title Sort descending Ref # Incident Date Technologies Publish Date
O-ring failure triggers liquid ammonia leak at dairy plant 5624551 Boiler, PV and Refrigeration 6 July 2018
Ruptured weld releases steam 5610668 Boiler, PV and Refrigeration 3 November 2017
10-year old falls 4-5 metres from triple seat chairlift II-691314-2018 (6506) Passenger Ropeways 1 March 2019
200A main breaker destroyed #II-911227-2019 (#15344) Electrical 9 March 2020
A motor controller’s components catch fire and melt during testing of a fan II-1224484-2021 (#22816) Electrical 27 January 2022
A natural gas copper tube flare connection was damaged resulting in a moderate release of natural gas inside of a residential home #II-969084-2020 (#16383) Gas 22 April 2020
A natural gas fired boiler in a residential home produces high levels of carbon monoxide II-1136528-2021 (#20560) Gas 18 June 2021
A refrigeration rack fitting failed, filling the machinery room with CO2, causing the building to be evacuated II-1023571-2020 (#18192) Boiler, PV and Refrigeration 12 July 2021
A safety feature (flanged connection) failure in a refrigeration system released 10 to 20 lbs of ammonia intended to be contained. #II-875227-2019 (#14105) Boiler, PV and Refrigeration 9 March 2020
A shaft seal failure on a compressor in a refrigeration system released approximately 5 lbs of ammonia intended to be contained #II-928694-2019 (#15744) Boiler, PV and Refrigeration 22 April 2020
Above surface ropeway: Impact injury to elbow and shoulder II-744946-2018 (#8566) Passenger Ropeways 6 June 2019
AC/DC rectification unit experiences electrical fault, causing catastrophic damage II-899008-2019 (#14988) Electrical 2 December 2021
Adult rider’s hand injured during ride cycle II-744934-2018 (#8435) Amusement Devices 27 February 2020
Aged rooftop heating unit damaged by small ignition explosion II-649103-2018 Gas 14 September 2018
Air handling unit explodes in mechanical room of day lodge 7296-II 690544-2018 Gas 10 August 2018
Ammonia leak at Alberni Valley Multiplex II-935221-2019 (#15840) Boiler, PV and Refrigeration 19 December 2019
Ammonia leak at an industrial food processing facility results in two people injured II-1213103-2021 (#22551) Boiler, PV and Refrigeration 14 July 2022
Ammonia leak caused by strainer gasket failure in food processing facility II-798918-2019 (#10565) Gas 22 October 2019
Ammonia leaks at refrigerant plant 1005087 Boiler, PV and Refrigeration 4 June 2018
Ammonia piping connection within a refrigeration failed, releasing ammonia in a cold storage room II-1014286-2020 (#17612) Boiler, PV and Refrigeration 18 June 2021
Ammonia refrigeration plant compressor develops cracks, releases oil and ammonia into the mechanical room 5620262 Boiler, PV and Refrigeration 6 July 2018
Ammonia release at fruit packing plant 5618019 Boiler, PV and Refrigeration 15 December 2017
Ammonia release due to gasket seal failure II-1029477-2020 (#18496) Boiler, PV and Refrigeration 27 September 2021
Ammonia release results in facility evacuation and temporary shutdown II-765453-2019 (#9425) Boiler, PV and Refrigeration 23 July 2019
Ammonia released from a cold storage room evaporator II-900379-2019 (#15064) Boiler, PV and Refrigeration 22 June 2020