なぜ福島第一1-4号機が過酷事故に至ったのか――事故調の報告書を中心に――  [in Japanese] Why the Fukushima Daiichi No.1-4 plants reached to the severe accident?: Examining Some Nuclear Accident Investigation Reports  [in Japanese]

Access this Article

Search this Article

Abstract

<p>本稿は,なぜ福島第一1-4号機が過酷事故に至ったのかについて,同じく津波が襲ったが過酷事故に至らなかった5-6号機や福島第二,東北電力の女川,日本原子力発電の東海第二における津波対策と比較しながら考察する。そして,東京電力は,3.11以前に10m超の津波を試算していたが,経営上の理由で有効な津波対策を打たなかったし,副次的要因として,原子力安全委員会や原子力安全・保安院も電力会社に捕虜にされ津波対策に有効な規制を打てなかったために過酷事故に至った,という仮説を,各種の事故調査委員会の報告書を検討しながら検証している。配電盤の水密化やかさ上げなど比較的安上がりで有効な津波対策を打っていれば福島第一1-4号機は過酷事故に至らなかった可能性があるし,規制当局が電力会社から独立性・専門性・透明性を確保していれば,津波対策に有効な規制を打てた可能性がある。</p>

<p>TThis article considers why the Fukushima Daiichi No.1-4 plants reached to the severe accident by comparing with other plants where were also attacked by big tsunami, such as the Tōkyō Electric Power Company(TEPCO)'s No.5-6 plants and the Fukushima Daini, the Tōhoku Electric Power Company's Onagawa and the Japan Atomic Power Company's Tōkai Daini. It examined some nuclear accident investigation reports and verified the hypothesis that as a primary factor, the TEPCO had been a trial calculation of over ten meters height of tsunami before 3.11 but did not take the effective anti-tsunami measures for a management reason and as a secondary factor, the Nuclear Safety Commission and the Nuclear and Industrial Safety Agency were captured by electric power companies and could not regulate them effectively, then the Fukushima Daiichi No.1-4 plants reached to the severe accident. If the TEPCO took some cheap and effective anti-tsunami measures such as sealing water of or raising up switchboards, the Fukushima Daiichi No.1-4 plants might not have reached to the severe accident and if the regulatory authorities realized independence, professionalism and transparency from electric power companies, they might have regulated to make the TEPCO taken those anti-tsunami measures effectively.</p>

Journal

  • Journal of Public Policy Studies

    Journal of Public Policy Studies 14(0), 6-23, 2014

    Public Policy Studies Association Japan

Codes

Page Top