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Report No.

Chemical decontamination using IF$$_7$$ gas

Hata, Haruhi  ; Yokoyama, Kaoru; Sugitsue, Noritake

The uranium enrichment facilities, located at Ningyo-toge in Japan, are contaminated by uranium fluorides. There is the risk of exposing the HF gas when the equipments will be dismantled. Therefore, we performed the systematic chemical decontamination by using IF$$_7$$ gas. This paper reports the actual results of the decontamination by using IF$$_7$$ gas. The result shows that the decontamination factor is approximately 100 or more. In addition, we performed the simulation of the reactions with IF$$_7$$ gas and uranium fluorides.



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