An Approach to Estimate SBO Risks in Multi-unit Nuclear Power Plants with a Shared Alternate AC Power Source

摘要

An appropriate method to evaluate accurately the amounts of risks, core damage frequencies and site risks, resulting from a station blackout (SBO) event of a multi-unit site that has a shared alternate AC (AAC) power source has been developed. It accommodates the complex inter-unit behaviour of the shared AAC power source under a multi-unit loss of offsite power (LOOP) conditions.