2018 Volume 54 Issue 1 Pages 1-13
The two approaches as the concepts to ensure safety of the complicated socio-technical systems have been proposed by Hollnagel. They are the safety concepts called “Safety-I” to reduce risks and “Safety-II” to expand successes. The resilience engineering is suggested as the methodology to achieve Safety-II. The study analyzes the recovery of the water injection of Unit 3 based on the resilience engineering, focusing on the fact that Fukushima Daiichi Nuclear Power Plant prevented further deterioration of the accident case, rather than the aspect that it has been evaluated for extracting risk factors. Based on those results, the study clarifies the method of learning to enhance safety which has a different view from existing accident investigation.
