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炉心損傷時の炉心物質再配置挙動評価手法の開発,4; 低融点合金融体と水を用いた基礎試験の結果に基づく溶融炉心物質のナトリウム中デブリ化距離についての考察

Development of assessment method to evaluate the material relocation behavior in the core disruptive accident of FBR, 4; Discussion on the distance for fragmentation of molten core in sodium based on the results of a fundamental experiment using a molten alloy and water

松場 賢一; 磯崎 三喜男; 神山 健司; 飛田 吉春

Matsuba, Kenichi; Isozaki, Mikio; Kamiyama, Kenji; Tobita, Yoshiharu

ナトリウム冷却高速炉の炉心損傷時に原子炉容器下部プレナムへ流出した溶融炉心物質がデブリ化するまでの距離(デブリ化距離)の評価手法を開発するため、溶融炉心物質とナトリウムの模擬物質として低融点合金と水を用いた基礎試験の結果に基づいて、溶融炉心物質の流出条件がデブリ化距離に与える影響について考察した。

In order to develop an evaluation method of the distance for fragmentation (debris formation) of molten core material discharged into the lower sodium plenum during core disruptive accidents in sodium-cooled fast reactors, the dependency of the distance for fragmentation on the discharge conditions was discussed based on the results of a fundamental experiment using a molten alloy and water.

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