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Report No.

The Annual report on the environmental monitoring around the Ningyo-toge, 2008; Okayama

Soma, Susumu; Ono, Takayuki; Ishimori, Yuu  ; Kawasaki, Satoru

The Ningyo-toge Environmental Engineering Center of the Japan Atomic Energy Agency (JAEA Ningyo-toge) performs the environmental monitoring around the Ningyo-toge and the waste rock sites according to the agreements with local governments, Okayama and Tottori prefectures. Environmental monitoring of plutonium has been also performed around the Ningyo-toge regarding the practical application study on the reprocessed uranium conversion, which was carried out from 1994 to 1999 at the Ningyo-toge. Each prefectural committee on the environmental monitoring evaluates the monitoring data annually. This report summarized the results of the environmental monitoring in Okayama prefecture in the fiscal year 2008. The results show that the levels of the radiation doses and the radioactive concentrations in the environment were within natural variations, and the committee concluded the environmental impacts from the sites were negligible. Therefore, the site of the JAEA Ningyo-toge has been well operated, and the waste rock sites have been well maintained.



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