Technical Evaluation of the Susceptibility of Safety-Related Systems to Flooding Caused by the Failure of Non-Category 1 Systems for the San Onofre Nuclear Power Plant, Unit 1

摘要

This report documents the technical evaluation of Southern California Edison Company's San Onofre Nuclear Power Plant, Unit 1, to determine whether the failure of any non-Category 1 (seismic) equipment could result in a condition, such as flooding, that might potentially adversely affect the performance of safety-related equipment required for the safe shutdown of the facility or to mitigate the consequences of an accident. Criteria developed by the US Nuclear Regulatory Commission were used to evaluate the acceptability of the existing protection as well as measures taken by Southern California Edison Company to minimize the danger of flooding and to protect safety-related equipment. (ERA citation 06:012370)