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Design approach for decay heat removal systems based on the safety design criteria for Gen-IV sodium-cooled fast reactor

第4世代ナトリウム冷却高速炉の安全設計クライテリアに適合しうる崩壊熱除去系の概念設計

加藤 篤志; 久保 重信; 近澤 佳隆; 早船 浩樹; 横井 忍*; 中田 崇平*; 谷 明洋*; 島川 佳郎*

Kato, Atsushi; Kubo, Shigenobu; Chikazawa, Yoshitaka; Hayafune, Hiroki; Yokoi, Shinobu*; Nakata, Shuhei*; Tani, Akihiro*; Shimakawa, Yoshio*

設計拡張状態として除熱系喪失事象を対象に、JSFRの崩壊熱除熱設備の強化設計について報告する。設計要求は、第4世代ナトリウム冷却炉の安全設計クライテリアを参照した。構築した概念に対する有効性評価, 信頼性評価についても報告する。

This paper focuses on loss of heat removal system (LOHRS) type event as Design Extension Condition (DEC) and describes candidates design measures to improve the decay heat removal system of JSFR against LOHRS type DEC. The design requirements are determined based on the Safety Design Criteria for Generation-IV Sodium-cooled fast reactor system. Effectiveness and reliability of the candidate design measures are discussed with preliminary evaluations.

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