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LOCA, LOFA and LOVA analyses pertaining to NET/ITER safety design guidance

Edgar Ebert, Jürgen Raeder1991年Fusion Engineering and DesignIF 1.7出版社

AbstractThe analyses presented pertain to loss of coolant accidents (LOCA), loss of coolant flow accidents (LOFA) and loss of vacuum accidents (LOVA). These types of accidents may jeopardise components and plasma vessel integrity and cause radioactivity mobilisation. The analyses reviewed have been performed under the assumption that the plasma facing components are protected by a carbon based armour. Accidental temperatures and pressure transients are quantified, the possibility of reaction products combustion is investigated and worst case accidental public doses are assessed. On this basis, design recommendations are given and design features such as low plasma facing components armour temperatures (on almost the entire surface) and inert gas adjacent to the vacuum vessel have been implemented.

日本語訳

本稿で提示される解析は、冷却材喪失事故(LOCA)、冷却材流量喪失事故(LOFA)、および真空喪失事故(LOVA)に関するものである。これらの種類の事故は、構成要素およびプラズマ容器の健全性を損なう可能性があり、また放射性物質の移行を引き起こす可能性がある。本稿で検討される解析は、プラズマ対向構成要素が炭素系アーマーによって保護されているという仮定の下で実施されたものである。事故時における温度および圧力の過渡変化が定量化され、反応生成物の燃焼可能性が調査され、事故時の公衆被ばく線量の最悪ケースが評価される。これらの知見に基づき、設計上の推奨事項が提示され、プラズマ対向構成要素のアーマー温度を(ほぼ全表面にわたり)低く抑えることや、真空容器に隣接して不活性ガスを配置することなどの設計特徴が実装されている。

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iter高精度(タイトル一致)

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ITERNext European TorusLoss-of-coolant accident
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