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Safety analyses of water cooled components inside the JET thermonuclear fusion tokamak

P.A. Ageladarakis, A. Webster, N.P. O’Dowd, S. Papastergiou1999年Fusion Engineering and DesignIF 1.7出版社

AbstractA theoretical model, supported by extensive experimental verification, has been used to examine the transient thermal behaviour of water cooled components, installed in the vessel of the world’s largest fusion tokamak (JET), under normal operational conditions and abnormal scenarios. Relevant freezing and boiling times for a full range of adverse scenarios were determined by the model, while protective actions were prescribed to safeguard the equipment against freezing or boiling risks. A completely automatic safety protection system, based on the results of the model, has been designed and implemented. The system reacted several times during real off-normal events protecting the relevant JET components.

日本語訳

検証済みの理論モデルが、世界最大の核融合トカマク装置(JET)の容器内に設置された水冷コンポーネントの過渡熱挙動を、通常運転条件下および異常条件下で検討するために使用されてきた。本モデルにより、あらゆる過酷なシナリオにおける関連する凍結時間と沸騰時間が決定され、機器を凍結や沸騰のリスクから保護するための対策が規定された。このモデルの結果に基づき、完全自動の安全保護システムが設計され、実装された。このシステムは、実際の異常事象発生時に数回作動し、関連するJETコンポーネントを保護することに成功した。

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