Regulatory approach for life extension of nuclear power plants in Canada

Canadian nuclear utilities have recently completed the Pickering A Units 1 and 4 and Bruce A Units 3 and 4 return to service projects. Other similar projects which have been announced include New Brunswick Power Nuclear's decision to proceed with the Point Lepreau life extension, and Bruce Power's plans to go ahead with the life extension of Bruce A Units 1 and 2. The projects to date have been carried out within the existing Canadian nuclear regulatory framework and the operating licenses issued by the Commission for each facility. Key regulatory goals have been to: ensure adequacy of the scope of refurbishment and safety upgrades proposed by the licensee; and verify the proper execution of that work by the licensee, prior to return of the unit to service. This paper describes elements of the CNSC requirements and regulatory oversight plans to achieve these goals. Work is ongoing to develop formal regulatory guidance. (author)