福島県内の空間線量率監視システムの変遷と課題

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書誌事項

タイトル別名
  • Development and Issues of Air Dose Rate Monitoring Systems in Fukushima Prefecture with Emphasis on Portable Monitoring Posts
  • 福島県内の空間線量率監視システムの変遷と課題 : 可搬型モニタリングポストを中心に
  • フクシマ ケンナイ ノ クウカンセンリョウリツ カンシ システム ノ ヘンセン ト カダイ : カハンガタ モニタリングポスト オ チュウシン ニ
  • ―可搬型モニタリングポストを中心に―

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説明

As a countermeasure against the nuclear disaster that took place in Fukushima, Japan in mid-March, 2011, a number of monitoring posts, including portable ones, have been introduced particularly to Fukushima prefecture among others. First, in this paper the damages and countermeasures concerning principally the air dose-rate monitoring systems that were prepared prior to the Great East Japan Earthquake, which triggered the giant tidal waves, and then caused the nuclear accident are reviewed. The tidal waves also damaged the radiation monitoring systems in Fukushima prefecture so severely that for nearly half a month following the nuclear accident there were hardly any organized monitoring activities within the 20 km range of the nuclear power plant. Nevertheless, outside the 20 km range the promptly constructed air dose-rate monitoring system could largely track main flows of radioactive plumes emitted from the nuclear plant. Starting from this situation, in this report, how a large-scale monitoring system with over 600 portable monitoring posts among others has been developed in Fukushima prefecture is reviewed. Furthermore, the operation records of the newly constructed monitoring system are analyzed. Consequently, it is revealed that more missing data tend to emerge at considerably high rates in every winter, and the trend is still maintained.

収録刊行物

  • 保健物理

    保健物理 52 (1), 13-26, 2017

    日本保健物理学会

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