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$$gamma$$線照射時の模擬炭酸塩スラリーでの水位上昇とガス保持挙動

Liquid level rising and gas retention behavior of simulated carbonate slurry under $$gamma$$ ray irradiation

本岡 隆文; 山岸 功 ; 永石 隆二 

Motooka, Takafumi; Yamagishi, Isao; Nagaishi, Ryuji

模擬炭酸塩スラリーを用いた$$gamma$$線照射試験を行い、高性能容器上のたまり水の発生原因に関する基礎知見を取得した。炭酸塩濃度95g/Lのスラリーに$$gamma$$線を8.5kGy/h照射したところ、水位上昇、スラリー内の気泡発生、上澄液の出現、並びにガス放出を認めた。水位上昇の原因はスラリー内のガス蓄積による体積膨張と考えられた。

Simulated carbonate slurry was irradiated by $$gamma$$-rays to obtain the basic knowledge of the cause of stagnant water over the High Integrity Container. The rise in water level, air bubbles in the slurry, and supernatant were observed when the carbonate slurry with 95 g/L density was irradiated by $$gamma$$-rays at 8.5 kGy/h. It was suggested that the cause of the rise in liquid level was regarded as the volume expansion by the gas retention in carbonate slurry.

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