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ナトリウム冷却高速炉における崩壊熱除去システムの炉内冷却特性に関する研究,2; 多様な炉内冷却器を有するナトリウム試験装置の主要構造に係る概念検討

Study on in-vessel coolability by decay heat removal systems in sodium-cooled fast reactors, 2; Conceptual design of components for a sodium test facility with in-vessel direct heat exchangers

田中 正暁  ; 江連 俊樹 ; 石川 信行; 鍋島 邦彦  ; 大山 一弘*; 中村 博紀*; 市原 隆司*

Tanaka, Masaaki; Ezure, Toshiki; Ishikawa, Nobuyuki; Nabeshima, Kunihiko; Oyama, Kazuhiro*; Nakamura, Hironori*; Ichihara, Takashi*

過酷事故(SA:シビアアクシデント)時を含む崩壊熱除去時の多様な炉内冷却システムの成立性確認を目的とするナトリウム試験装置(AtheNa-RV/DHRS)の設計検討を行っている。平成29年度実施した試験要求項目に対応した炉心構成要素及び直接炉心冷却系熱交換器等の主要構造物の検討結果を報告する。

In the investigation of measures to enhance safety of a sodium cooled fast reactor, conceptual design of a test apparatus for sodium experiment named AtheNa-RV/DHRS has been conducted for feasibility study of the diverse systems for decay heat removal under various operating conditions including the sever accident. According to the knowledges of important thermal-hydraulic problems to be studied using AtheNa-RV/DHRS and significant points in the design of it, major components consisting of the simulated core and the direct heat exchanger (DHX) was preliminary designed.

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