High sensitivity on-line monitor for radioactive effluent.

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概要

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• A new approach for a highly sensitive effluent monitor is presented. The free flow type monitor, which consists of a straightener, nozzle, monitoring section and γ-ray detector, is demonstrated to be effective in providing long term stability.<BR>The 160 start-and-stop cycles of effluent discharge were repeated in a 120-h testing period. Results showed a background increase was not observed for the free flow type monitor. The background count rate was calibrated to the lowest detection limit to be 2.2 X 10<SUP>-2</SUP> Bq/ml for a 300 s measurement time.

• 一般社団法人 日本原子力学会の論文

著者

• Doi Akira

  Energy Research Laboratory Hitachi Ltd.

• Fujii Masaaki

  Energy Research Laboratory Hitachi Ltd.

• ABE Eisuke

  Chubu Electric Power Co.

• INOUE Yasuhiko

  Chugoku Electric Power Co.

• SASAKI Toshimi

  Tohoku Electric Power Co.

• ISHIZUKA Akira

  Tokyo Electric Power Co.

• KITAGUCHI Hiroshi

  Energy Research Laboratory, Hitachi, Ltd.

• KITAGUCHI Hiroshi

  Energy Research Laboratory, Hitachi Ltd.

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