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水素挙動解析システム構築に向けた取組み

Development of hydrogen behavior simulation system for safety management

寺田 敦彦  ; 日野 竜太郎

Terada, Atsuhiko; Hino, Ryutaro

原子力機構では、発生・漏洩した水素の挙動を拡散,燃焼,爆発による影響評価まで解析するシステムの構築を進めている。本報では、水素挙動解析システムの構築に向けて、原子力発電技術機構が実施した大規模なヘリウムガス漏洩拡散試験の試験照合解析を行い、各種凝縮モデルを適用することで、ヘリウムの成層化の傾向を確認したので報告する。

In JAEA, a simulation code system has been developed to analyze hydrogen behaviors including diffusion, combustion, explosion and structural integrity evaluation. As one of validation test of a numerical simulation system for leaked hydrogen gas behavior, we compared calculated results and time histories of helium gas concentration etc in large scale container which NUPEC executed. The calculated results using some concentration models show stratification phenomena with experimental results.

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