Review of Five Investigation Committees' Reports on the Fukushima Dai-ichi Nuclear Power Plant Severe Accident<br/>Focusing on Accident Progression and Causes

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概要

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•   On March 11, 2011, the Tohoku District-off the Pacific Ocean Earthquake and the subsequent tsunami resulted in the severe core damage at TEPCO's Fukushima Dai-ichi Nuclear Power Station Units 1-3, involving hydrogen explosions at Units 1, 3, and 4 and the large release of radioactive materials to the environment. Four independent committees were established by the Japanese government, the Diet of Japan, the Rebuild Japan Initiative Foundation, and TEPCO to investigate the accident and published their respective reports. Also, the Nuclear and Industrial Safety Agency carried out an analysis of accident causes to obtain the lessons learned from the accident and made its report public. This article reviews the reports and clarifies the differences in their positions, from the technological point of view, focusing on the accident progression and causes. Moreover, the undiscussed issues are identified to provide insights useful for the near-term regulatory activities including accident investigation by the Nuclear Regulation Authority.

著者

• 玉置 等史

  Nuclear Safety Research Center, Japan Atomic Energy Agency

• 中村 武彦

  Nuclear Safety Research Center, Japan Atomic Energy Agency

• 丸山 結

  Nuclear Safety Research Center, Japan Atomic Energy Agency

• 渡邉 憲夫

  Nuclear Safety Research Center, Japan Atomic Energy Agency

• 与能本 泰介

  Nuclear Safety Research Center, Japan Atomic Energy Agency

関連論文

• Review of Five Investigation Committees' Reports on the Fukushima Dai-ichi Nuclear Power Plant Severe AccidentFocusing on Accident Progression and Causes

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