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Sections 4.7, Radiation protection, 4.7.1, Radiological hazard identification and assessment and 4.7.2, Application of ALARA

Radiation protection

The radiation protection SCA covers the implementation of a radiation protection program in accordance with the Radiation Protection Regulations. This program must ensure that contamination levels and radiation doses received by individuals are monitored, controlled and maintained as low as reasonably achievable (ALARA).

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

·       General Nuclear Safety and Control Regulations, paragraphs 3(1)(e), (f) and (i), and 12(1)(a), (b), (c), (d), (e) and (f); and sections 17 and 29

·       Class I Nuclear Facilities Regulations, paragraphs 5(i), (j), (k), (l) and (m), and section 14

·       Radiation Protection Regulations

·       Nuclear Substances and Radiation Devices Regulations, sections 5, 8, 20 and 23

The application should describe how the design of the radiation protection program is commensurate with the radiological hazards associated with the licensed activities, based on a thorough analysis of radiological hazards, radiation exposure and dose assessments, and an optimization of doses to conform to the ALARA principle.

Radiological hazard identification and assessment

The application should provide the radiological evaluation and safety assessment performed in the development of the radiation protection program. Information provided should include the potential sources of radiation and the analysis of exposure pathways. The applicant should take into account contained and immobile sources, potential out-of-core criticality (resulting from mishandling of enriched fuel), and potential sources of airborne radioactive material. The application shall describe a nuclear criticality safety program that meets the requirements in REGDOC‑2.4.3, Nuclear Criticality Safety [29].

Estimated annual collective, individual effective and individual equivalent radiation doses for individuals selected for monitoring should be provided, including methods for estimating the doses.

Where detailed specific radiation protection provisions are to be developed later on, the applicant should provide a proposed timeline and milestones for completion of this work.

Application of ALARA

The applicant should provide the policy that documents the application of the ALARA principle. The application should describe how the policy is integrated within the radiation protection program to ensure that radiation exposures and doses conform to the ALARA principle. The information submitted should demonstrate that there is sufficient management commitment in establishing this policy. The application should demonstrate that, beginning with reactor facility design, the policy is in accordance with:

·       sections 4.1.1 and 8.13 of REGDOC‑2.5.2, Design of Reactor Facilities: Nuclear Power Plants [9]

·       REGDOC‑2.7.1, Radiation Protection [33]

For additional information, refer to REGDOC‑2.7.1, Radiation Protection [33].

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