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HIC模擬炭酸塩スラリーの照射実験,2; $$gamma$$線照射下での模擬炭酸塩スラリーのガス保持挙動試験

Irradiation experiments of simulated carbonate slurry in HIC, 2; Gas retention behavior of simulated carbonate slurry under $$gamma$$-ray irradiation

本岡 隆文; 永石 隆二 ; 山岸 功 

Motooka, Takafumi; Nagaishi, Ryuji; Yamagishi, Isao

高性能容器上のたまり水の発生原因に関する基礎知見取得のため、模擬炭酸塩スラリーを用いた$$gamma$$線照射試験を行った。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、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。

We conducted $$gamma$$ ray irradiation test using simulated carbonate slurry to obtain the basic knowledge of the cause of stagnant water over the High Integrity Container. We observed a rise in water level, air bubbles in the slurry, a supernatant when the carbonate slurry with 95 g/L density was irradiated by $$gamma$$ ray at 8.5 kGy/h. The cause of the rise in water level was regarded as the volume expansion by the gas retention in the carbonate slurry.

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