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研究施設等廃棄物のトレンチ処分施設における遮水機能の設計検討

Design study for impermeable function of trench disposal facility for very low level waste generated from research, industrial and medical facilities

坂井 章浩; 仲田 久和; 天澤 弘也; 黒澤 亮平*; 佐藤 亮*; 北村 洋一*

Sakai, Akihiro; Nakata, Hisakazu; Amazawa, Hiroya; Kurosawa, Ryohei*; Sato, Makoto*; Kitamura, Yoichi*

研究施設等廃棄物のうち安定五品目以外の極低レベル廃棄物は、遮水層を設置したトレンチ処分施設に埋設することを計画している。本研究では、遮水シート及び低透水性材料等の特性及び組合せを考慮し、放射性物質の漏出に関して抑制機能の高い遮水システムについて検討した。

We consider that very low level waste slightly including chemical toxicity material among radioactive waste generated from research, industrial and medical facilities is disposed of in trench disposal facility which is equipped with impermeable layers. We studied the impermeable system which has high performance to prevent the radioactive material from leaching out of waste layer taking into account the combination of geomembrane liners and low permeable materials.

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