PRA Methodology for Seismic Events and Fire Hazards Methodology for Seismic and Fire PRAs Canadian Nuclear Power Plants (NPPs) are required to prepare Probabilistic Risk Assessments (PRA) for a range of initiators, including internal fire and seismic events. The methodologies for the PRAs must be accepted by the Canadian nuclear regulator, the Canadian Nuclear Safety Commission (CNSC). The operators of the multi-unit CANDUs located in Ontario required methodologies acceptable to the CNSC in order to prepare PRAs for internal fire and seismic events. . Scope of work Kinectrics was required to prepare these PRA methodologies to be consistent with best industry practices and, which would be acceptable to the CNSC. Solutions Kinectrics prepared PRA methodologies to meet the above requirement

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