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宮原 信哉*; 鯉江 竜輔*; 宇埜 正美*; 河口 宗道*; 佐藤 理花; 清野 裕
Nuclear Engineering and Design, 446(Part A), p.114523_1 - 114523_14, 2026/01
被引用回数：2 パーセンタイル：46.18(Nuclear Science & Technology)In a postulated accident of fuel pin failure of a sodium-cooled fast reactor, a fission product of cesium will be released from the failed pin as an aerosol such as cesium iodide and/or cesium oxide together with a fission product noble gas such as xenon and krypton. The xenon and krypton released with the cesium aerosols into the sodium coolant as bubbles have an influence on the removal of cesium aerosols by the sodium pool in a period of bubble rising to the sodium pool surface. Then, the cesium aerosols could transfer into the containment vessel as an initial inventory of a source term. To meet this phenomenon, the computer program AESOP (AErosol scrubbing in SOdium Pool) has been developed to deal with the expansion and the deformation of the bubble together with the aerosol absorption considering the effects of the particle size distribution and the agglomeration in aerosols. In this study, simulation experiments have been conducted using simulant particles under the condition of room temperature in water pool and nitrogen gas bubble systems and the experimental results were compared with the analysis results calculated under the same condition by the AESOP code. Furthermore, to examine the applicability of the AESOP code to the sodium pool system, the sensitivities of the physical parameters on decontamination factor (DF) of fission product aerosols such as the initial bubble diameter, the sodium pool depth and the temperature, the aerosol particle diameter and the density, the initial aerosol concentration in the bubble had been studied and the analysis results were discussed for the sensitivities of the parameter as same as DF of the aerosol.
鯉江 竜輔*; 河口 宗道*; 宮原 信哉*; 宇埜 正美*; 清野 裕
Proceedings of 29th International Conference on Nuclear Engineering (ICONE 29) (Internet), 4 Pages, 2022/08
ナトリウムプール中の希ガス気泡からのセシウムエアロゾルの除去メカニズムを調査するために、水中模擬実験を実施し、窒素気泡が水プールを上昇する際の模擬エアロゾルの除染係数を測定した。その結果、エアロゾルの粒径及び水プールの深さが増加するにつれて、除染係数が増加することが分かった。
鯉江 竜輔*; 河口 宗道*; 宮原 信哉*; 宇埜 正美*; 清野 裕
no journal, ,
希ガス気泡がNaプール中を上昇する際の気泡内Csエアロゾルの除去効果を調べるために、模擬エアロゾル(酸化鉄の粉末)を使用して水中でのバブリング試験を実施し、除染係数を測定した。
