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Yoshizawa, Atsufumi*; Oba, Kyoko; Kitamura, Masaharu*
Nihon Kikai Gakkai Rombunshu (Internet), 83(856), p.17-00263_1 - 17-00263_17, 2017/12
Kitamura, Masaharu*; Oba, Kyoko; Yoshizawa, Atsufumi*
no journal, ,
Yoshizawa, Atsufumi*; Oba, Kyoko; Kitamura, Masaharu*
no journal, ,
Oba, Kyoko; Yoshizawa, Atsufumi*; Kitamura, Masaharu*
no journal, ,
This study introduces the necessity of stepping up the concept from Safety-I, risk removal type of safety, to the Safety-II, which aims to enhance system flexibility and resilience. In order to achieve Safety-II, the Fukushima Daiichi Nuclear Power Plant accident was investigated by using Resilience Engineering, which is the methodology going toward Safety-II. Focusing on responding, which is one of the four cornerstones of Resilience Engineering, workers in the Fukushima Daiichi Nuclear Power Plants executed flexible ideas to prevent catastrophic damage of the accident. Those responding were created by human with strong attitude in which few investigation reports mentioned. Those approaches show the importance of the Safety-II concept and Resilience Engineering methodology.
Kitamura, Masaharu*; Oba, Kyoko; Yoshizawa, Atsufumi*
no journal, ,
A new framework of information provision and public dialogue concerning safety of nuclear facilities has been proposed in this paper. Basic ideas behind the framework are a novel concept of safety named Safety-II and a relevant emerging methodology of safety management called Resilience Engineering. The new ideas emphasize practices that contributed to positive outcomes in addition to failures and errors experienced during accident management. Implication of the new framework concerning the nuclear risk communication has been addressed through reflection of several field experiences.
Oba, Kyoko; Yoshizawa, Atsufumi*; Kitamura, Masaharu*
no journal, ,
Five years have passed since the Fukushima accident, and at first look Fukushima Daiichi Nuclear Power Station appears as an ordinary factory. However, regarding safety education and training, the remains of the accident which bore the brunt of the overwhelming impact of the disaster carry an important meaning in the development of attitude and motivation for safety, and many organizations have already begun working on implementing it for future safety. This article seeks to propose the proper attitude for nuclear industry by utilizing remains of the Fukushima accident focusing on the transportation industry, while considering previous approaches which utilized remains.
Oba, Kyoko; Yoshizawa, Atsufumi*; Kitamura, Masaharu*
no journal, ,
This paper focuses on the Tokai No.2 Nuclear Power Station, which was hit by earthquakes and subsequent tsunami in the Great East Japan Earthquake in 2011 but swiftly achieved cold shutdown. The earthquake struck the power station just before the scheduled completion of engineering work to raise the walls of the room housing a seawater intake pump. The fact that the work had been applied helped continuous operation of the seawater intake pump, a key piece of equipment for achieving cold shutdown. The power station followed its pre-defined procedure to bring its reactors to cold shutdown. Focusing on the background of the engineering work, which was not mentioned in past reports, this paper analyzes multiple organizations (main actors) based on the concept of Resilience Engineering to reveal how the collaboration between these organizations enhanced the power station's resilience, and considers the potential of such collaboration in boosting the resilience of our society.
Yoshizawa, Atsufumi*; Oba, Kyoko; Kitamura, Masaharu*
no journal, ,
The accident at the Fukushima Daiichi Nuclear Power Station, which was triggered by the Great East Japan Earthquake, has presented significant issues about in which the safety of massive socio-technical systems is structured. We must derive the greatest number of lessons possible from this accident to ensure the safety of systems in the future, but the lessons learned so far have mainly focused on risks and been deduced from an analysis of failures that led to the accident. This paper references the approach of Resilience Engineering which aims to extend successes in a changing environment, and focuses on the actions that prevented "further catastrophe" through an analysis of the Fukushima accident and derives new lessons to improve the capability to handle "unforeseen contingencies."
Oba, Kyoko; Yoshizawa, Atsufumi*; Kitamura, Masaharu*
no journal, ,
At the time of the Great East Japan Earthquake, many socio-technical systems experienced significant damages from the earthquake and tsunami far beyond the preparedness for disasters. Therefore, necessity of Business Continuity Plan (BCP) has been recognized irrespective of domains. Case studies of various on-site responses related to this disaster were analyzed to extract lessons from BCP that is common to various systems. Specifically, in reference to the concept of Resilience Engineering that is focused for enhancing resilience of organizations (i.e. resilience and flexibility) in recent years, analysis was conducted with attention to the cases in which the concerned systems could restore or ensured the safety from disturbance. Lessons useful for disaster prevention and mitigation have been extracted successfully from activities conducted for preparing and responding to the earthquake-driven disturbances.
Kitamura, Masaharu*; Oba, Kyoko; Yoshizawa, Atsufumi*
no journal, ,
no abstracts in English
