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The ultimate safety margins of ITER: a demonstration of the safety potential of fusion

David A Petti, Hans-Werner Bartels1999年Fusion Engineering and DesignIF 1.7出版社

AbstractThe fail-safe nature of the fusion energy reaction, modest radioactive inventories, multiple layers of confinement, and passive means for decay heat removal combine to make ITER ‘safe’ with little dependence on engineered, dedicated ‘safety systems’ for public protection. In this paper, we summarize our detailed assessment of very low probability or so called hypothetical accidents to show that ITER meets the ‘no evacuation’ objective and to demonstrate the safety potential of fusion. By providing strong confidence that the design (and operation) of the facility protects the public, there should no technical justification for dependence on public mitigative actions as a backup for hypothetical events. Other objectives of this analysis are to show the robustness of the defense in depth approach and to demonstrate that there are no cliff edge effects.

日本語訳

核融合エネルギーのフェイルセーフ特性、適度な放射性インベントリ、多重閉じ込めバリア、および崩壊熱除去のための受動的手段は、ITERを「安全」なものとし、公衆保護のための工学的「専用安全システム」への依存を最小限に抑えている。本論文では、発生確率が極めて低い、いわゆる仮想的な事故に関する詳細な評価を要約し、ITERが「避難不要」の目標を満たすことを示すとともに、核融合の安全性の可能性を実証する。設計(および運転)が施設を保護するという強い確信が得られることにより、仮想的な事象に対するバックアップとしての公衆保護措置への依存は技術的に正当化されない。本解析のその他の目的は、深層防護の頑健性を示し、クリフエッジ効果が存在しないことを実証することである。

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