Periodic Safety Reviews and Long-Term Operation for Canadian Nuclear Power Plants

Abstract

Periodic Safety Reviews (PSRs) are used in assessing the safety and operational conditions of Nuclear Power Plant (NPPs). Areas such as design, operations, and usage of modern codes and standards are evaluated through the PSR process. The PSR process includes a PSR basis document, Safety Factor Reports, a Global Assessment Report (GAR), and the Integrated Implementation Plan (IIP) (Figure 1). These main items allow both the licensees and regulators to gain a comprehensive understanding of the NPPs operational condition. As different aspects of an NPP can be evaluated during the safety factor analysis, licensees are able to determine where modifications and safety improvements are needed. These findings allow for inputs into the decision-making process when considering future operating strategies. These can include Long- Term Operations (LTO), major component replacements (refurbishment) or continued operation. Nuclear generating stations across Canada all employ the use of PSRs to complement their continued operations plans and to meet their regulatory requirements.