This regulatory document sets out the requirements of the Canadian Nuclear Safety Commission (CNSC) with regard to maintenance programs for nuclear power plants (NPPs). This document also provides information and guidance on how the requirements may be met. When incorporated into a licence or other legally enforceable instrument, this regulatory document becomes a legal requirement.

Environmental protection for nuclear facilities and activities is done in accordance with the Nuclear Safety and Control Act (NSCA) and the regulations made under the NSCA. This legislation includes provisions to ensure that licensees are meeting the CNSC’s mandate to protect the environment and the health, safety and security of persons. The CNSC requires the environmental effects of all nuclear facilities or activities to be considered and evaluated when licensing decisions are made. This regulatory document provides information to applicants and licensees on protecting the environment and the health of persons, including: - identification of facility or activity interactions with the environment and the public - identification and mitigation of potential environmental effects associated with these interactions - design and implementation of effluent and emission release measures and of the environmental monitoring measures to confirm or test the predictions and the actual effects - periodic assessments of the environmental protection measures and the licensee’s performance In particular, this regulatory document describes: - the CNSC’s principles for environmental protection - for all nuclear facilities or activities that interact with the environment, the scope of an environmental assessment (EA) and the roles and responsibilities associated with an EA - the CNSC’s requirements and guidance to applicants and licensees for developing environmental protection measures, including an environmental risk assessment (ERA) where required, for both new and existing facilities or activities

For nuclear facilities and activities, environmental protection is done in accordance with the Nuclear Safety and Control Act (NSCA) and the regulations made under it. The legislation includes provisions to ensure that licensees are meeting the CNSC’s mandate to protect health, safety and security and the environment. Under the NSCA and its regulations, licensees are required to take all reasonable precautions to control the release of nuclear and hazardous substances to the environment from licensed facilities or activities. As part of an application for a licence to construct, operate or decommission a nuclear facility, applicants and licensees are required to assess the effects on the environment and the health and safety of persons, and identify prevention or mitigation measures. In addition, the application must identify the: • proposed location(s) of releases • proposed maximum quantities and concentrations • anticipated volume and flow rate of releases of nuclear and hazardous substances into the environment • proposed measures to control releases of nuclear substances and hazardous substances into the environment This regulatory document describes the requirements and guidance for controlling releases to the environment, through: • applying the concept of best available technology and techniques economically achievable (BATEA) • implementing licensed release limits and action levels for releases to the environment • commissioning a treatment system and confirming performance • implementing adaptive management where require

REGDOC-2.13.1, Safeguards and Nuclear Material Accountancy, sets out CNSC requirements and guidance for the establishment and maintenance of a safeguards program.

This regulatory document is intended for information only and does not contain any requirements for CNSC licensees. It describes the CNSC’s regulatory approach and philosophy, and outlines how the CNSC applies the Nuclear Safety and Control Act (NSCA) and regulations made under the authority of the NSCA in its regulatory oversight. The information in this regulatory document will be of interest to anyone seeking to learn more about the CNSC and how it regulates nuclear activity in Canada.

This regulatory document clarifies the regulatory requirements and provides guidance for the design, operation, monitoring, qualification and performance assessment of nuclear fuel. It articulates a set of comprehensive fuel-related regulatory requirements and provides risk-informed guidance that aligns with accepted national and international codes and practices.

This regulatory document consolidates the requirements and guidance of the Canadian Nuclear Safety Commission (CNSC) for reports and, notifications to and the filing of specific records with the CNSC by licensees of nuclear power plants (NPPs), as well as the applicable time frames for reporting. Licensees are required to report to or notify the CNSC of situations, events, or dangerous occurrences that may require short-term action by the CNSC. They are also required to submit or file other reports, notifications or specific records, including routine scheduled reports on various topics such as certain normal business activities that are required for action by the CNSC, or that are required for longer-term compliance monitoring.

This regulatory document clarifies requirements and provides guidance for applicants and licensees on how to demonstrate the safety of a Class IB nuclear facility, including information relating to: • the safety analysis program (the managed process that governs the conduct of a safety analysis) • the conduct of a safety analysis (the systematic evaluation of the potential hazards) • safety analysis documents, records and reporting

This regulatory document provides information on conventional health and safety (CHS). In accordance with the Nuclear Safety and Control Act (NSCA), the CNSC has a mandate related to the risks to health and safety of persons associated with the development, production and use of nuclear energy, with the production, possession and use of nuclear substances, and with prescribed equipment and information. CHS is a safety and control area (SCA) that covers the implementation of a program to manage workplace safety hazards and to protect workers. Occupational health and safety (OHS) seeks to prevent worker illness and injuries through the proactive identification and mitigation of hazards. OHS in a nuclear setting consists of four SCAs: CHS; emergency management and fire protection; physical design; and radiation protection. The CNSC evaluates each SCA to determine whether licensees meet the regulatory requirements set out in the NSCA and its associated regulations.

This regulatory document sets out requirements and guidance for reports and notifications that licensees of Class I nuclear facilities (excluding power reactors) and of uranium mines and mills must submit to the Canadian Nuclear Safety Commission (CNSC). This document presents the types of reports and the applicable timeframe for reporting. Licensees are required to report to the CNSC regarding situations, events and dangerous occurrences that may require short-term action by the CNSC. Licensees must also submit an annual compliance monitoring report. Licensees are also required to provide notification of certain normal business activities (such as work disruptions or financial status) and to file specific records with the CNSC in accordance with the Nuclear Safety and Control Act (NSCA) and the regulations made under the NSCA.