Reliability Analysis of Nuclear Power Plant Electrical System Considering Common Cause Failure Based on GO-FLOW

The reliability of nuclear power plant electrical systems is an important guarantee safety, and the common fault failure problem arising from redundant design intelligent control may greatly affect assessment results. Combined with features repairability, multi-state characteristics, systems, a analysis method based on GO-FLOW considering proposed. This study firstly constructs algorithmic model combining operators repairable components equivalent parameters multi-mode components, then establishes probability calculation for by quantitative computation signaling system model, finally, quantitatively calculates their influencing factors. example simulation external supply plant, analyzes influence signal processing factors verifies validity proposed method. results show that have large impact analysis; standby diesel generator set will seriously reduce system, which can be improved installing additional generators.