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STACY改造工事における放射線管理

Radiation management for the remodeling work of STACY

中嶌 純也 ; 山田 克典; 長谷川 里絵; 梅田 昌幸; 関 真和; 武藤 康志; 澤畠 勝紀

Nakajima, Junya; Yamada, Katsunori; Hasegawa, Rie; Umeda, Masayuki; Seki, Masakazu; Muto, Yasushi; Sawahata, Katsunori

原子力科学研究所のSTACY(定常臨界実験装置)施設では更新炉への改造工事を実施している。我々は、旧STACYの解体撤去工事において、旧STACYの特徴を踏まえた内部被ばく管理及び外部被ばく管理を検討し、実施した。その結果、作業者の身体汚染や内部被ばくは発生せず、外部被ばくも検出下限値未満であった。

STACY (Static Experiment Critical Facility) has been under remodeling work. During the demolition work of the previous model of STACY, we conducted radiation management for both internal exposure and external exposure taking the characteristics of the previous model into consideration. As a result, any contamination and internal exposure of the all workers was detected, and external exposure of the all workers were less than the detection limit.

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