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$$gamma$$カメラによる福島第一2号機原子炉建屋オペレーティングフロアの汚染部位計測,3; オペレーティングフロアの汚染部位計測及び解析評価

Measurement of contamination distribution for operating floor of the Fukushima Daiichi Unit 2 reactor building by $$gamma$$ camera, 3; Measurement and analysis

福嶋 峰夫; 岡田 尚; 金山 文彦; 吉元 勝起; 羽生 敏紀; 川野邊 崇之; 高橋 嘉明*; 及川 景晴*; 松本 康弘*; 岸 和良*; 阪上 知己*

Fukushima, Mineo; Okada, Takashi; Kanayama, Fumihiko; Yoshimoto, Katsunobu; Hanyu, Toshinori; Kawanobe, Takayuki; Takahashi, Yoshiaki*; Oikawa, Kageharu*; Matsumoto, Yasuhiro*; Kishi, Kazuyoshi*; Sakaue, Tomoki*

$$gamma$$カメラ($$gamma$$-eyeII)による福島第一2号機原子炉建屋オペレーティングフロアの汚染部位計測をブローアウトパネル(BOP)開口部から行った結果、主たる汚染は原子炉ウェル上部であり、原子炉ウェル奥西側の床面は検出下限値以下の汚染であった。

Contamination distribution for operating floor of the Fukushima Daiichi Nuclear Power Plant was measured from opened blow out panel using $$gamma$$ viewer "$$gamma$$-eyeII" developed by JAEA. It is obtained that one of the main contaminated area is on the reactor well and contamination level of the surface of west side floor is lower than lower limit level of detector.

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