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Temperature performance of portable radiation survey instruments used for environmental monitoring and clean-up activities in Fukushima

福島の環境放射線モニタリング及び除染活動に用いられる放射線サーベイメータの温度特性

三枝 純; 柳澤 華代; 波澄 篤; 清水 武徳; 内田 芳昭*

Saegusa, Jun; Yanagisawa, Kayo; Hasumi, Atsushi; Shimizu, Takenori; Uchida, Yoshiaki*

福島第一原子力発電所事故に伴い、県内各地で放射線モニタリングや環境修復活動が実施されている。現場の気温は夏期に40$$^{circ}$$C、冬期に-20$$^{circ}$$Cに達し、各種サーベイメータの想定使用温度の範囲外である。そこで福島で多く用いられている国産サーベイメータ4機種を対象として、恒温槽を用いた温度特性試験を実施し、指示値の温度依存性を調べた。

Following the Fukushima Daiichi Nuclear Power Plant (NPP) accident, large-scale radiation monitoring and environmental clean-up activities have been conducted throughout the Fukushima region. Outside air temperatures there reach 40$$^{circ}$$C in summer and -20$$^{circ}$$C in winter, which are beyond the quoted range of many radiation survey instruments. For the purpose, temperature performances of four types of portable Japanese survey instruments which are widely used in Fukushima were experimentally investigated with a temperature-controlled chamber.

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パーセンタイル:100

分野:Chemistry, Physical

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