This regulatory document is part of the CNSC’s operating performance series of regulatory documents, which also covers construction and commissioning programs, accident management, and periodic safety reviews. The full list of regulatory document series is included at the end of this document and can also be found on the CNSC’s website.

Regulatory document REGDOC-2.3.4, Operations Programs for Reactor Facilities clarifies the requirements for, and provides guidance on, developing and implementing operations programs for reactor facilities (nuclear power plants, advanced reactor designs and small modular reactors). This regulatory document is based on operational experience (OPEX) and best practices developed from water-cooled nuclear power plants. This information will be updated as additional information is gathered from advanced reactor designs and small modular reactors. Proponents, applicants and licensees of advanced reactor designs and small modular reactors should apply the information and concepts from this regulatory document to the extent practicable and as best applicable to that design.

This document is the first version.

Given the wide range of proposed reactor facilities – especially of advanced reactor designs and small modular reactors – and given that reactor facilities have risk profiles that vary significantly depending on the particular characteristics of the activity or facility, the proponent, applicant or licensee may propose addressing requirements and guidance in a risk-informed manner commensurate with the level of risk of the regulated activity, or may propose alternative approaches to meet regulatory requirements, as described in REGDOC 1.1.5, Supplemental Information for Small Modular Reactor Proponents, and REGDOC 3.5.3, Regulatory Fundamentals. The information in this regulatory document can also be applied to other activities and licensing stages (for example, fuel-out commissioning under a licence to construct, or decommissioning).

For information on the implementation of regulatory documents and on the graded approach, see REGDOC-3.5.3, Regulatory Fundamentals.

After reading the full document above, click here to provide your comments on REGDOC 2.3.4. You will be able to provide your comments directly on the platform or upload a separate document with your comments.

Key Dates

  • January 30th, 2024 - Open of Consultation
  • April 30th, 2024 - Close of Consultation
  • May 1st, 2024 - Open of Feedback on Comments period
  • May 15th, 2024 - Close of Feedback on Comments period