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Operation of the electron accelerator and the $$gamma$$-ray irradiation facilities

電子加速器及び$$gamma$$線照射施設の運転

上松 敬; 春山 保幸; 花屋 博秋; 山縣 諒平; 清藤 一; 長尾 悠人; 金子 広久; 山口 敏行*; 八木 紀彦*; 高木 雅英*; 川島 郁男*; 松崎 慎也*

Agematsu, Takashi; Haruyama, Yasuyuki; Hanaya, Hiroaki; Yamagata, Ryohei; Seito, Hajime; Nagao, Yuto; Kaneko, Hirohisa; Yamaguchi, Toshiyuki*; Yagi, Norihiko*; Takagi, Masahide*; Kawashima, Ikuo*; Matsuzaki, Shinya*

電子・$$gamma$$線照射施設は大きなトラブルはなく順調に稼動した。2012年度における運転時間は、電子加速器では910時間、コバルト第1棟では15738時間、コバルト第2棟では10537時間、食品棟では7871時間であった。主要なトラブル,メンテナンスは次の通りである。電子加速器ではSF$$_{6}$$ガス回収装置が故障し空気の混入があった。コバルト第1棟では定期整備と線源の補充を行った。古くなった$$^{60}$$Co30cm棒状線源15本、$$^{60}$$Co球状線源12個及び$$^{137}$$Cs線源5個の処分をアイソトープ協会を通して行った。

The electron accelerator and the $$gamma$$-ray irradiation facility have been operated without serious trouble. The annual operation time in FY 2012 for the electron accelerator, the first, the second cobalt irradiation facility and food irradiation facility are 910 h, 15,738 h, 10,537 h and 7,871 h, respectively. Typicaly repairs were next ones. The SF6 gas withdrawal system broke of the accelerator, and there was trouble of mixing in of air. The maintenance check of the first irradiation facility was done. The $$^{60}$$Co ources were purchased and loaded to the first irradiation facility. Fifteen pencil sources of $$^{60}$$Co with length of 30 cm each, twelve ball sources of $$^{60}$$Co and five $$^{137}$$Cs source were disposed of, and they were transferred to Japan Radioisotope Association (JRIA).

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