Experiences in Fukushima Dai-ichi Nuclear Power Plant in light of resilience engineering

レジリエンスエンジニアリングに基づいた福島第一原子力発電所事故経験の分析

吉澤 厚文*; 大場 恭子  ; 北村 正晴*

Yoshizawa, Atsufumi*; Oba, Kyoko; Kitamura, Masaharu*

The conventional concept of safety had the objective to eliminate risk. However, the Fukushima Daiichi Nuclear Power Plant Accident exemplified that there is a region of safety that cannot be covered by such an approach. As is evident from the first author's experience on site during the Fukushima Accident, systems need to be resilient in order to secure safety even amidst large disturbances. Also, people in the field showed the ability to make an effort to achieve success (recovery) even when plagued by problems or adversity (resilience). This paper introduces a model for explaining the difference between conventional and new safety concepts. As this model requires the analysis of success cases, this paper focuses on incidents within the Fukushima Accident and analyzes two incidents that can be considered successes based on Resilience Engineering methodology. Based on this analysis, we attempt to structuralize the relationship between the four core capabilities of Resilience Engineering (Learning, Responding, Monitoring, and Anticipating) and complementary traits in order to utilize Resilience Engineering in real-world situations.