Investigation of Actual Condition of Contaminated Soil in Regulation Pond Conducted by Underwater Radiation Measuring Instrument Installed in Remotely-Operated Vehicle (Second Field Test in Fukushima)

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概要

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• Prototype remotely-operated vehicle equipped with high resolution TV monitor and underwater radiation measuring instrument was developed and actual condition of contaminated soil in the regulation pond in Fukushima was investigated. Remarkable contaminated point was observed beneath rainwater outfall of impounding reservoir(Length×Width×Depth; 112m×30m×3.5m) in the order of 3.3~5.24μSv/h. It is found that contaminated small particles in the order of 1-3mm are deposited in the polluted mud at the bottom of the reservoir and suspended by disturbance of water flow, and the contaminated zones in the order of 0.75-3.5μSv/h are distributed in a patchy fashion caused by confluent of outfall in the demarcated region(10m×10m×10m).

著者

• 山口 克彦

  福島大学理工学群共生システム理工学類

• 石山 新太郎

  （独）日本原子力研究開発機構

• 山口 克彦

  福島大学理工学群 共生システム理工学類

関連論文

• Investigation of Actual Condition of Contaminated Soil in Regulation Pond Conducted by Underwater Radiation Measuring Instrument Installed in Remotely-Operated Vehicle (Second Field Test in Fukushima)
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