Short answer
Recent Alberta OHS charges and investigations show maintenance and non-routine work are not automatically low-risk. After two explosions and a Columbia Icefield rollover, the cases point to gaps in planning, procedures, supervision, hazard assessment, and training.
This week’s Alberta OHS news carries the same practical message: maintenance and non-routine work are not automatically low-risk.
As reported by stalbertgazette.com, Alberta Occupational Health and Safety has charged two energy companies and a site supervisor with nearly 30 counts after a September 30, 2024 explosion and fire at a work site north of Cochrane. A service rig crew was on site when the fire broke out, leaving five workers seriously injured. The number of charges alone suggests investigators found gaps across planning, procedures, and supervision rather than one isolated mistake.
A second file comes from Red Deer. As reported by CBC News and Canadian Occupational Safety, Prairie Bus Lines Ltd. faces ten charges under the Occupational Health and Safety Act after a January 9, 2025 explosion at its maintenance terminal injured five workers with burns. The charges allege that workers repaired a propane-powered bus indoors with ignition sources nearby; that the mechanic had not been trained to access and shut off the fuel shutoff valve; that no hazard assessment was completed before the work began; that manufacturer specifications were not readily available; and that flame-resistant outerwear was not provided.
The same risk pattern appears in a third, still-developing case. As reported by CBC News, a maintenance worker was injured this week when a small tour bus rolled down a hill during an operational maintenance check on a glacier access road at the Columbia Icefield. The worker was alone in the vehicle, and Alberta OHS has taken over the investigation.
The common thread is not one industry—it is the point at which work leaves the normal production routine. Maintenance, repair, cleaning, and operational checks bring live energy into play: propane and other fuels, moving vehicles, stored pressure, and ignition sources. For Alberta construction and trades employers, the same hazards show up when a crew services a propane-fuelled truck, pressure washer, generator, or shop equipment.
If your maintenance work is missing from your safety procedures, Salient can help you review how it fits into your wider program. Explore our health and safety program development service or book a free discovery call to discuss your operation.
Frequently asked questions
What happened in the recent Alberta OHS cases involving maintenance work?
Alberta OHS charged two energy companies and a site supervisor with nearly 30 counts after a September 30, 2024 explosion and fire north of Cochrane, which seriously injured five workers. Prairie Bus Lines Ltd. faces ten charges after a January 9, 2025 explosion at its Red Deer maintenance terminal that injured five workers with burns. In a third case, a maintenance worker was injured when a small tour bus rolled down a hill during an operational maintenance check at the Columbia Icefield, and Alberta OHS has taken over the investigation.
What did the Red Deer charges allege about the maintenance work?
The charges allege workers repaired a propane-powered bus indoors with ignition sources nearby. They also allege the mechanic had not been trained to access and shut off the fuel shutoff valve, no hazard assessment was completed before work began, manufacturer specifications were not readily available, and flame-resistant outerwear was not provided.
What hazards make maintenance work high-risk?
Maintenance, repair, cleaning, and operational checks can bring live energy into play, including propane and other fuels, moving vehicles, stored pressure, and ignition sources. For construction and trades employers, the same hazards can show up when a crew services a propane-fuelled truck, pressure washer, generator, or shop equipment.