Document history of REGDOC-2.4.3, Nuclear Criticality Safety

REGDOC-2.4.3, Nuclear Criticality Safety, is currently being developed. When published, it will set out requirements for nuclear criticality safety and provide guidance on how those requirements may be met. It will provide information for preventing criticality accidents in the handling, storage, processing and transportation of fissionable materials and the long-term management of nuclear waste.

This document will clarify the minimum physical constraints and limits on fissionable materials to ensure nuclear criticality safety during the construction, operation, decommissioning or abandonment of the licensed facility. It will apply to operations with fissionable materials outside nuclear reactors, except for the assembly of these materials under controlled conditions (such as in critical experiments).

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View [HTML version of draft REGDOC-2.4.3] [PDF version of draft REGDOC-2.4.3]

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Summary

This regulatory document is part of the CNSC’s safety analysis series of regulatory documents, which also covers deterministic and probabilistic safety analysis.

Key principles and elements used in developing this document are consistent with national and international standards. Some sections of this document are extracted from the specified standards from the American National Standards Institute, with permission of the publisher, the American Nuclear Society. Where necessary, the text has been adapted to make it applicable to Canada’s international obligations to the International Atomic Energy Agency and consistent with the CNSC’s regulatory requirements.

This document will supersede:

Note: A "tracked changes" version of draft REGDOC-2.4.3, Nuclear Criticality Safety, which indicates where updates and amendments were made, is available upon request to cnsc.information.ccsn@canada.ca.

Status

October 6, 2017: Invitation to provide feedback on the comments received during consultation is open until October 30, 2017.

Note: The comments are posted in the language in which they were received. You may provide your feedback on draft REGDOC-2.4.3 in the following ways:

  • Email: cnsc.consultation.ccsn@canada.ca.
  • Mail:
    Canadian Nuclear Safety Commission
    P.O. Box 1046, Station B
    280 Slater Street
    Ottawa, ON, Canada K1P 5S9
  • Fax: 613-995-5086

The consultation process is public and unless you specify otherwise, your comments, including names and affiliations, will be disclosed publicly. You will not receive a formal reply to your comments.

Document Milestone Dates Links
Consultation July 11, 2017 to September 14, 2017

View the July 11, 2017 news release

View the consultation version of draft REGDOC-2.4.3

(Draft REGDOC-2.4.3 HTML) (Draft REGDOC-2.4.3 PDF)

Invitation to provide feedback on comments received October 6 to October 30, 2017

View the comments received:

Feedback received TBD TBD
Presentation to the Commission TBD TBD
Publication TBD TBD