Environment & Safety
Setting A New Safety Standard
In June, 2021 our Blind River Refinery celebrated the remarkable achievement of operating for 15 years without a lost-time injury. The safety culture that exists at the Refinery is a reflection of the commitment of every employee to put safety first – for themselves and for those around them.
Since 1990, Blind River has received Cameco's top award for safety performance, the Mary-Jean Mitchell Green Award, more times than any other Cameco facility.
Safety
We manage the safety of our workers through programs, systems, and standards, with our Safety, Health, Environment and Quality (SHEQ) Policy providing overarching guidance. There are many aspects of the management system that contribute to a safe work environment, a few examples include:
- Risk assessments help identify issues and determine the appropriate controls; the corrective action process verifies that incidents and near misses are reported, tracked, investigated and shared with colleagues; and emergency preparedness and planning prepare us to respond to serious incidents.
- We have developed 12 corporate safety standards to help protect our workers from our most common hazards. Some standards guide our general safety practices, such as our job hazard analysis and our job task observation, and other standards deal with specific hazardous situations (similar to other companies’ life saving rules): such as fall protection, confined space entry, rigging and hoisting, and control of hazardous energy (also referred to as lockout/tagout).
- Routine audits are conducted to monitor compliance with regulations and our own requirements. These and other aspects of the management system are routinely examined to verify that they continue to be effective at keeping our workers safe.
Radiation Protection
Radiation risks are effectively managed at Blind River through a formal radiation protection program and dedicated personnel who ensure that workers are safe. The program ensures that radiation protection is considered in the physical design of all facilities and operating procedures. It also provides for systematic monitoring of radiation in work areas and tracking the exposures of individual workers using a combination of monitoring devices and health testing. Radiation exposures at Blind River are far below regulatory limits.
Environmental Protection
At Cameco, protection of the environment is one of our highest corporate priorities during all stages of our activities, from exploration through development, operations, decommissioning, and reclamation.
We monitor our performance by tracking corporate and site-specific key performance indicators, conducting environmental monitoring programs, and regularly auditing our adherence to the requirements of these programs We use the information from all of our programs to help us to identify opportunities to improve.
Environmental management system
We have a ISO 14001-certified environmental management system used across our operating sites, which is supported by a corporate Environmental Management Program that outlines the operating requirements sites must meet. Our environmental management system encourages and promotes continuous adaptation of our practices based on new information and technologies.
Environmental risk assessments
We complete environmental risk assessments to systematically identify, quantify, and to characterize the potential risks to the environment, workers, and the public. We use our environmental risk assessments to inform our decisions and actions. Additionally, we complete an iterative process, where required, to verify that our proposed measures to protect the environment and the public are effective. We review or update the assessments every five years, incorporating results from our environmental monitoring programs and other scientific advances.
Corrective action process
We have a corrective action process in place to systematically investigate and address the causes of non-conformance to regulatory requirements or internal standards. The process includes classifying the non-conformance, assigning the appropriate level of investigation (dependent on incident significance), and tracking the recommended corrective actions to prevent and mitigate similar occurrences.
Audits
To support our culture of continuous improvement, our processes and operations undergo regular audits, including:
- Our environmental management system is audited by a third-party every three years as a requirement to maintain our ISO 14001 certification.
- Our SHEQ team conducts an internal audit of our SHEQ programs on a three-year cycle. The total audit scope is split in half and executed on a rotating basis. This means that all our sites undergo at least two audits to cover all aspects of our SHEQ programs within every three-year period. The audit follows the ISO 19001 process and encompasses our environmental and safety programs.
- We also maintain and implement an internal audit program at our corporate office. Results and recommendations from this systematic and documented process are presented to senior management, who are responsible for implementing them and correcting any deficiencies. The internal audit group reports to the audit and finance committee of the board.
Environmental Incidents and Other Events
Environmental incidents and other events are reported to regulatory agencies as required by federal and provincial regulations. This includes releases to the environment reportable to Ontario Ministry of Environment's Spills Action Centre.
If you have questions about any of the items posted here, please contact us.
Latest incident or event:
| Posting Date | January 12, 2026 |
| Incident Date | December 15, 2025 |
| Incident | Reportable Spill |
| Details | A lift truck carrying eight drums of uranium ore concentrate was involved in a single vehicle incident in the yard of the Blind River Refinery. The lift truck contacted an unmarked curb, covered by snow causing the truck to shift. Six of the eight drums were affected resulting in the release of approximately 150 kilograms of uranium ore concentrate onto the paved surface. There was no health or safety risk posed to the driver, public or the environment. |
| Corrective Action | Damaged drums and pallets were contained, and residual material was recovered. The area was radiation monitored until cleanup was completed. Cameco notified the Canadian Nuclear Safety Commission. |
| Cameco Environmental Effect Rating | no measurable impact to the environment2 |
- Past reporting
Posting Date January 12, 2026 Incident Date December 15, 2025 Incident Reportable Spill Details A lift truck carrying eight drums of uranium ore concentrate was involved in a single vehicle incident in the yard of the Blind River Refinery. The lift truck contacted an unmarked curb, covered by snow causing the truck to shift. Six of the eight drums were affected resulting in the release of approximately 150 kilograms of uranium ore concentrate onto the paved surface. There was no health or safety risk posed to the driver, public or the environment. Corrective Action Damaged drums and pallets were contained, and residual material was recovered. The area was radiation monitored until cleanup was completed. Cameco notified the Canadian Nuclear Safety Commission. Cameco Environmental Effect Rating no measurable impact to the environment2 Posting Date October. 21, 2025 Incident Date September 18, 2025 Incident ERT Activation Details A pull station was activated at the Blind River Refinery when a small fire was observed on a piece of equipment in the plant. The fire was extinguished using a nearby extinguisher. The emergency response team was activated. There was no health or safety risk posed to the workers or environment. Corrective Action The small fire was extinguished and cleaned up. The Canadian Nuclear Safety Commission was notified. Cameco Environmental Effect Rating no measurable impact to the environment1 Posting Date March 10, 2025 Incident Date March 6, 2025 Incident Transportation Incident Details A tractor trailer carrying three full UO3 tote bins was involved in a minor vehicle incident while travelling south on Highway 12. A passenger vehicle pulled out in front of the tractor trailer causing the driver to swerve into the far lane attempting to avoid a collision but in doing so struck another vehicle with its trailer.
There was no damage to the tractor trailer, nor the tote bins so the vehicle continued onto its intended destination.
There was no health or safety risk posed to the public or the environment.
Corrective Action The police were called and attended the scene. As there was no damage to the tractor trailer it continued to its intended destination.
Cameco notified the Canadian Nuclear Safety Commission transport section.
Cameco Environmental Effect Rating no measurable impact to the environment1 Posting Date February 28, 2025 Incident Date February 27, 2025 Incident Transportation Incident Details A tractor trailer carrying three full UO3 tote bins was involved in a minor incident when stopped at a red traffic light in Blind River eastbound on Highway 17. A passenger vehicle, unable to stop due to slippery road conditions, rear-ended the tractor trailer.
There was no damage to the tractor trailer or the tote bins, so the vehicle was able to safely continue onto its intended destination.
There was no health or safety risk posed to the public or the environment.
Corrective Action The police were called and representatives from Cameco and the trucking company attended the scene. As there was no damage to the tractor trailer continued to its intended destination.
Cameco notified the Canadian Nuclear Safety Commission transport section.Cameco Environmental Effect Rating no measurable impact to the environment1 Posting Date January 28, 2025 Incident Date January 23, 2025 Incident Transport Occurrence (Minor Vehicle Incident) Details A tractor trailer carrying a sea container of uranium ore concentrate was involved in a minor incident on Highway 401 east bound near Brockville, Ontario. A passenger vehicle was merging onto Highway 401 when its driver lost control, crossing all lanes and ending up in front of the truck.
There was no damage to the trailer nor the sea container, and only minor damage to the front of the truck. The truck was still roadworthy and continued to its intended destination, Cameco’s Blind River Refinery.
There was no health or safety risk posed to the public or the environment.Corrective Action The passenger vehicle was towed from the scene. There was no damage to the trailer or sea container, and only minor damage to the front of the truck. The truck continued to its intended destination.
Cameco notified the Canadian Nuclear Safety Commission transport section.Cameco Environmental Effect Rating no measurable impact to the environment1 Posting Date November 29, 2024 Incident Date November 28, 2024 Incident ERT Activation Details On November 28, a pull station was activated at the Blind River Refinery when a small fire was observed inside of a 5-gallon plastic pail in the plant. The fire was extinguished using a nearby fire extinguisher.
Due to the speedy response and action of the emergency response team there was no health or safety risk posed to the workers or the environment.
Corrective Action The fire was extinguished and cleaned up. The Canadian Nuclear Safety Commission was notified. Cameco Environmental Effect Rating no measurable impact to the environment1 Posting Date July 30, 2024 Incident Date July 1, 2024 Incident Reportable Leak & Discharge Details On June 26, 2024, when the glycol heating systems were drained for maintenance, a mechanical failure occurred. It was observed that the drain valve on number three coil was leaking glycol. A pipe cap was immediately installed to stop the leak. It was assumed the leak had been minimal and there was minimal glycol in the system since the coil had been isolated and drained in 2023 when it had failed.
During a maintenance inspection, it was determined that glycol had passed through the sewage plant and was released to Lake Huron on July 1, 2024. A lab investigation estimates 70L of glycol had spilled.
There was no health or safety risk posed to the public, workers, or the environment by this release.
Corrective Action An investigation is currently underway by Cameco to prevent future occurrences.
The Canadian Nuclear Safety Commission, Town of Blind River and the Ministry of Environment, and Conservation and Parks have been notified.
Cameco Environmental Effect Rating no measurable impact to the environment1 Posting Date May 3, 2024 Incident Date May 2, 2024 Incident Reportable Spill Details On April 18, a sink hole was observed near two groundwater supply wells for the Blind River Refinery, close to the Mississaugi River. This sinkhole was located adjacent to the golf course, situated west of the parking lot, which is part of the Town property leased from Cameco. As a precautionary measure, we promptly cordoned off the affected area and initiated the process of determining next steps to have the underground well water supply line repaired. Cameco has been closely monitoring the sinkhole and noted no significant changes. On May 2, it was observed that there is now additional groundwater flow from the well line, carrying sediment and overflowing into the river.
There was no health or safety risk posed to the public, workers, or the environment by the release of groundwater that had not been used by the refinery.
Corrective Action Cameco is working to rectify the situation and has contacted a contractor to install a silt curtain and are in the process of securing hydrovac services. Additionally, Cameco is actively pursuing a separate contractor to repair the well supply line.
The Canadian Nuclear Safety Commission, Town of Blind River and the Ministry of Environment, Conservation and Parks have been notified.
Cameco Environmental Effect Rating no measurable impact to the environment1 Cameco Environmental Effect Rating
- Level 1 - no measurable impact to the environment
- Level 2 - negligible impact
- Level 3 - short-term, seasonal impact
- Level 4 - mortality of some species, but not affecting ecosystem function
- Level 5 - impairment of ecosystem function
- N/A - not applicable
Notes
1 Includes all releases to the environment reportable to Ontario Ministry of Environment's Spills Action Centre and other significant events.
Waste Management
Solid wastes contaminated by uranium are reprocessed, recycled and re-used to the extent possible. Waste materials that cannot be reprocessed, recycled or re-used are safely stored on site until appropriate disposal options are available.
Decommissioning
Detailed plans and financial guarantees are in place to restore the Blind River site to public use once the facility reaches the end of its productive life.
Environmental Assessment
All new significant changes to existing operations are subject to environmental assessments to identify potential effects on the environment.
Regulatory Oversight
The Blind River refinment facility is licensed and regulated by the Canadian Nuclear Safety Commission (CNSC). The operation is also subject to other federal and provincial regulations for the protection of people and the environment, including by Environment Canada and Ontario’s Ministry of the Environment. Federal and provincial regulators conduct regular site inspections and audits to verify that people and the environment are protected.
Sustainability at Cameco
When measuring the sustainability and ethical impact of a company, environmental, social and governance (ESG) are key factors considered by the public and investors. Sustainability and ESG matters have been an important focus at Cameco for many years and we have a strong performance record.