軽水炉保全最適化のための統合型シミュレータDr. Mainte による ヒューマンエラーの影響とその低減効果の検討
Effects of Human Error and its Reduction Analyzed by Dr. Mainte, Integrated Simulator of Maintenance Optimization of LWRs
礒部 仁博 Yoshihiro ISOBE 匂坂 充行 Mitsuyuki SAGISAKA 小川 良太 Ryota OGAWA 松永 嵩 Takashi MATSUNAGA 高坂 徹 Toru KOUSAKA 松本 聡司 Satoshi MATSUMOTO 吉村 忍 Shinobu YOSHIMURA
Dr. Mainte, an integrated simulator for maintenance optimization of LWRs (Light Water Reactors) has been developed based on PFM (Probabilistic Fracture Mechanics) analyses. The concept of the simulator is to provide a decision-making system to optimize maintenance activities for representative components and piping systems in nuclear power plants totally and quantitatively in terms of safety, availability and economic efficiency, environmental impact and social acceptance. For the further improvement of the safety and availability, the effect of human errors and their reduction on the optimization of plant maintenance activities have been studied. The types of human error analyzed in this study are undetected error of cracks independent on their depths, repair failures after crack detections through ISI (In-Service Inspection) and skipping inspections.