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高燃焼度改良型燃料の反応度事故(RIA)及び冷却材喪失事故(LOCA)条件下における挙動,6; 高燃焼度改良被覆管の高温酸化挙動

Behavior of high-burnup advanced fuels under reactivity-initiated accident (RIA) and loss-of-coolant accident (LOCA), 6; High temperature oxidation behavior of high-burnup advanced cladding tubes

垣内 一雄; 成川 隆文 ; 小畑 裕希; 天谷 政樹

Kakiuchi, Kazuo; Narukawa, Takafumi; Obata, Hiroki; Amaya, Masaki

高燃焼度改良型燃料被覆管に対し冷却材喪失事故を模擬した高温酸化試験を実施した。その結果、燃焼の進展及び被覆管材質の変更に伴う酸化速度の著しい変化は見られなかった。

JAEA has conducted studies on fuel behaviors during loss-of-coolant-accidents (LOCA) using high-burnup advanced fuel cladding tubes. We report the evaluation results on the effects of the burnup extension and the change in the alloy compositions on high temperature oxidation of high-burnup advanced fuel cladding.

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