Nuclear and environmental services

Technological safety and risk-based solutions for the nuclear industry 
Learn more about our nuclear solutions

Nuclear solutions, all in one place

A full-service approach covering the entire nuclear lifecycle

 

For over 25 years Calian has helped to ensure the safety and security of Canada’s nuclear infrastructure. This approach has resulted in full participation in hundreds of projects serving the nuclear industry and all levels of government, both in Canada and internationally. 

Supporting Canada's nuclear fleet: from first licence through final decommissioning

 Calian supports proponents through licensing, impact assessment and pre operational safety analysis before construction begins.

What our clients achieve:

  •  A defensible licensing case before capital is committed 
  •  Pre-operational safety analysis, independently reviewed 
  •  Indigenous and public engagement that withstands scrutiny 
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Structured project delivery across scope, schedule, cost, and risk. Built around the realities of multi-unit, multi-billion-dollar nuclear programs.

What our clients achieve:

  • Integrated schedules with owner-grade controls
  • Engineering and vendor coordination that holds milestones
  • Quality oversight
A worker wearing a white hard hat and safety jacket inspects equipment and takes notes on a clipboard in an industrial facility.



 Keeping operating stations safe, compliant, and licence-ready, through every regulatory cycle and in emergency readiness.

What our clients achieve: 

  • Licence-ready through every cycle
  • Dose management and defensible monitoring
  • Emergency preparedness and response readiness
A group of people fill and stack sandbags outdoors, wearing safety gear and working together near a large pile of sand.



Supporting safety analysis, tooling systems engineering and construction logistics to minimize risk and keep refurbishment campaigns on-time and on-budget.

What our clients achieve:

  • Tooling validated before deployment
  • Safety cases for outage configurations
  • Construction logistics your crews can execute
Engineer in a hard hat and safety vest writing on a clipboard in front of an electrical substation.



Safe closure and responsible stewardship for stations entering shutdown and the long-term waste facilities that follow.

What our clients achieve: 

  • Decommissioning plans built to CNSC expectations
  • Sites and equipment released with defensible evidence
  • Pre-and post-closure safety assessments
A group of professionals in an office setting review technical blueprints displayed on a glowing light table.



Lifecycle service areas

Learn more about our services
Safety analysis

PSA, DSA, hazards, dose, fire and criticality.

Licensing and regulatory affairs

Licensing strategy and CNSC correspondence through every cycle.

Environmental protection

Monitoring, release limits, assessments and modelling.

Radiation Protection

Health physics from program design to field surveys.

Decommissioning and waste

Characterization, clearance, transport and storage safety.

Systems engineering and robotics

Retube tooling, verification testing and dexterous robotics.

Project management and controls

10,000+-activity schedules with decision-grade reporting.

Emergency preparedness

Plans, training and national-scale exercises on ResponseReady®.

Indigenous and public engagement

Consultation and engagement built to withstand scrutiny.

A promotional flyer for Calian Nuclear and Environmental Solutions highlighting their nuclear service offerings, environmental protection expertise, and support for CNSC compliance.

Nuclear and environmental solutions all in one placePDF

Trusted, end-to-end solutions that ensure safety, compliance and long-term confidence in nuclear operations.
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Use cases

  • A person holds a small green seedling with soil in their hands against a blurred, sunlit outdoor background.
    Bruce Power | major component replacement

    Refurbishment & major projects

    • Supported fuel channel and feeder replacement across Units 6, 3 and 4.
    • Led design verification testing and issue resolution activities.
    • Developed tooling, logistics and lifecycle management strategies.
    10 years embedded.
  • A wide view of sprawling tree branches with dense green leaves, seen from below against a bright sky and surrounded by lush greenery.
    SaskPower | BWRX-300 SMR program

    New build & licensing

    • Developed the licensing and regulatory roadmap.
    • Built a 10,000+ activity integrated project schedule.
    • Led site selection and management system development.
    10,000+ project activities.
  • Cooling towers of a nuclear power plant release steam at dusk, with their reflection visible in a calm body of water in the foreground.
    Hydro-Québec & CNL

    Decommissioning & waste

    • Developed detailed decommissioning plans.
    • Performed radiological and hazardous materials characterization.
    • Supported demolition planning and material clearance activities.
    3 nuclear sites supported. 
  • Two workers in safety vests and helmets stand near wind turbines at sunset, discussing or inspecting the site.
    Ontario power generation | Wesleyville Project

    Impact assessment & engagement

    • Led the integrated impact assessment program.
    • Coordinated Indigenous and community engagement activities.
    • Managed multidisciplinary environmental studies and deliverables.
    855 expected deliverables.
  • Sunlight shines through blurred green foliage, reflecting on calm, rippling water in the foreground.
    Canadian utilities & government partners

    Emergency management

    • Designed and delivered full-scale nuclear exercises.
    • Supported nuclear emergency preparedness programs.
    • Developed AI-enabled emergency management solutions.
    10,000+ participants.
  • Four hands hold pieces of a jigsaw puzzle with a green Earth illustration, assembling it together over a background of green grass.
    OPG, NWMO, SaskPower & more

    Safety analysis

    • Delivered deterministic and probabilistic safety assessments.
    • Performed independent peer reviews of safety cases.
    • Supported licensing and regulatory submissions across the nuclear lifecycle.
    6 major nuclear organizations supported.

Talk to a Calian expert today

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