CNSC invites the public to comment on new regulatory document that provides information and guidance on security measures for sealed sources and category I, II and III nuclear material

News release

June 20, 2018 -- Ottawa

The Canadian Nuclear Safety Commission (CNSC) is consulting the public, stakeholders and Indigenous Peoples on Part B of draft REGDOC-2.12.3, Security of Nuclear Substances: Sealed Sources and Category I, II and III Nuclear Material, Version 2, until August 3, 2018*.

Part B contains the revised content from CNSC guidance documents G-208, Transportation Security Plans for Category I, II or III Nuclear Material and G-274, Security Programs for Category I or II Nuclear Material or Certain Nuclear Facilities. These documents have been merged into REGDOC-2.12.3, Version 2 as part of the CNSC’s commitment to create a regulatory document framework that combines all of its existing documents clearly and logically, according to regulated facilities and activities, safety and control areas, and other areas of regulatory interest.

Part A, originally published in May 2013 as REGDOC-2.12.3, Security of Nuclear Substances: Sealed Sources, has already been consulted on and approved by the Commission. Therefore, it is Part B alone that the CNSC is consulting at this time.

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

*The consultation period has been extended until September 7, 2018.

Quick facts

  • Licensees must implement minimum security measures to prevent the loss, sabotage, illegal use, illegal possession or illegal removal of sealed sources during their entire lifecycle.  

  • The CNSC welcomes feedback at any time on regulatory documents.


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Aurèle Gervais
Media Relations
Canadian Nuclear Safety Commission



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