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Progress of thermal hydraulic evaluation methods and experimental studies on a sodium-cooled fast reactor and its safety

ナトリウム冷却高速炉とその安全性に関する熱流動評価手法と試験研究の進捗

上出 英樹; 大島 宏之; 堺 公明; 田中 正暁

Kamide, Hideki; Ohshima, Hiroyuki; Sakai, Takaaki; Tanaka, Masaaki

高速炉の安全設計基準を支える熱流動評価手法として、燃料集合体内熱流動、自然循環崩壊熱除去、高サイクル熱疲労、炉心損傷事故を取り上げ、さらにそれら評価手法の検証の手法について、JSFRを対象とした試験研究とともにここに概説する。これらの評価手法は高速炉の熱流動現象の全体にかかる数値解析システムとして集約されるとともに人材育成と技術伝承のツールとしても有効に活用される計画である。

In this paper, the authors focus on four kinds of thermal-hydraulic issues associated with the SDC, i.e. fuel assembly thermal-hydraulics, natural circulation decay heat removal, thermal striping phenomena, and core disruptive accidents, and provide a description of their evaluation method developments including verification and validation and necessary experimental studies for the Japan Sodium-cooled Fast Reactor (JSFR). These evaluation methods are planned to be eventually integrated into a comprehensive numerical simulation system that can be applied to all phenomena envisioned in SFR systems and that can be expected to become an effective tool for the development of human resource and the handing down of knowledge/technologies.

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