The Canadian Nuclear Safety Commission (CNSC) — Commission canadienne de sûreté nucléaire (CCSN) — is Canada's federal nuclear regulator. It is an independent administrative tribunal and a federal department.

Mandate

CNSC is created by and reports to Parliament through the Minister of Natural Resources Canada under the Nuclear Safety and Control Act (NSCA, 2000). The mandate is to:

  • regulate the use of nuclear energy and materials to protect health, safety, security and the environment;
  • implement Canada's international commitments on the peaceful use of nuclear energy;
  • disseminate objective scientific, technical and regulatory information to the public.

Licensed activities

CNSC licenses the full life-cycle of nuclear facilities and substances in Canada: uranium mines and mills (Saskatchewan), conversion (Port Hope), fabrication, the operating CANDU reactor fleet (Bruce A/B, Darlington, Pickering), research reactors, waste management facilities (Chalk River, Western Waste Management Facility), medical and industrial radioactive sources, packaging and transport, and import/export.

REGDOC series

Detailed regulatory expectations are issued as the REGDOC series of regulatory documents. The series is organised into 3 main groups:

  • REGDOC-1 — Regulated facilities and activities (e.g. REGDOC-1.1.1 on site evaluation and site preparation for new reactor facilities).
  • REGDOC-2 — Safety management (e.g. REGDOC-2.5.2 on design of reactor facilities, REGDOC-2.4.3 on nuclear criticality safety).
  • REGDOC-3 — Other regulatory areas including public information, packaging and transport.

Some REGDOCs are mandatory licence conditions; others are guidance. Versioning is explicit — for example REGDOC-1.1.1 has been issued at versions 1.0, 1.1, 1.2 and 1.3, with each version refining requirements for site evaluation and site preparation as licensing experience accumulates.

Decision-making

Licensing decisions are made by an independent Commission of up to seven members (full-time president + up to six part-time) appointed by the Governor in Council. Hearings are usually public, transcribed, and webcast. CNSC staff act as analysts and present technical recommendations to the Commission.

Indigenous engagement and international work

CNSC has formalised Indigenous engagement and consultation processes that go beyond typical regulatory consultation. Internationally CNSC participates in the IAEA safeguards programme, IRRS missions, and the NEA, with technical leadership on heavy-water reactor safety, dose assessment, and small modular reactor (SMR) licensing harmonisation.