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Report No.

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

Agematsu, Takashi; Uno, Sadanori; Hanaya, Hiroaki; Yamagata, Ryohei; Seito, Hajime; Nagao, Yuto; Yamasaki, Shota; Kawashima, Ikuo*; Yagi, Norihiko*; Takagi, Masahide*; Matsuzaki, Shinya*

The $$gamma$$-ray irradiation facility have been operated smoothly in FY2014, on the other hand, the rate of operation was down to 60% compared to FY2013 for troubles at the electron accelerator. The annual operation time in FY 2014 for the electron accelerator, the first, the second cobalt irradiation facility and food irradiation facility are 746h, 19,907h, 13,831h and 7,293h, respectively. Typical maintenance is as follows. The isolation pillar of high-voltage circuit, leakage of isolation gas were repaired, SF$$_{6}$$ isolation gas was purified at the electron accelerator. The periodic maintenance was done for the second irradiation facility. New pieces of $$^{60}$$Co sources were purchased and loaded to the food irradiation facility.



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