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Sections 4.4, Safety analysis and 4.4.1, General considerations

Safety analysis

The safety analysis SCA covers maintenance of the safety analysis that supports the overall safety case for the facility. Safety analysis is a systematic evaluation of the potential hazards associated with the conduct of a proposed activity or facility and considers the effectiveness of preventive measures and strategies in reducing the effects of such hazards.

This section addresses the requirements of the following regulations made under the NSCA:

·       General Nuclear Safety and Control Regulations, paragraphs 3(1)(d), (e) and (i), and 12(1)(c) and (f)

·       Class I Nuclear Facilities Regulations, paragraphs 3(b) and (d), and 5(f)

·       Radiation Protection Regulations (all requirements related to dose)

General considerations

The application shall include a preliminary safety analysis report (PSAR) for the reactor facility. The PSAR includes a deterministic safety analysis, a probabilistic safety assessment (PSA) and a hazards analysis. The application should demonstrate that all levels of defence in depth are addressed, and should confirm that the facility's design is capable of meeting the applicable dose acceptance criteria and safety goals.

Whenever operator action is taken into account, the application should demonstrate that the operators will have reliable information, sufficient time to perform the required actions, documented procedures to follow, and will have been trained.

The safety analyses included in the PSAR should proceed in parallel with the design process, with iteration taking place between the two activities. The applicant should outline the methodology used to advance the detailed design and the safety analyses. The scope and level of detail of the analyses should increase as the design is developed, so that the final safety analyses reflect the finished reactor facility design. The application should demonstrate that the design, procurement, manufacture, equipment qualification, construction, installation and commissioning processes are taken into account in the safety analyses to ensure that the design intent will be achieved in the “as built” reactor facility.

The applicant should also describe the programs and oversight in place to ensure that the safety analysis is carried out by technically qualified and appropriately trained staff, and is in accordance with the management system program supporting safety analysis and in accordance with “intelligent customer” principles. The information should demonstrate that all contractors and subcontractors involved in the safety analysis are qualified to carry out their respective activities.

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