A matrix of uranium bearing wastes (sludge, incineration ashes) bonds uranium tightly, and some wastes (narrow pipes, filters, etc.) have complicated shapes. This research was intended to achieve the assumed clearance level (0.3Bq/g) and to reduce the amount of secondary wastes. One of the uranium decontamination processes is the fluorination decontamination process in which CIF3 is used as a decontamination agent to fluorinate uranium bearing wastes to gaseous UF6 which can be recovered by cold or chemical trapping. The research test variables were decontamination temperature, decontamination temperature history and decontamination period. Filters and the main sludge could be decontaminated below the assumed clearance level when treated at 500 °C for 3 hours.
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ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation
September 21–25, 2003
Oxford, England
Conference Sponsors:
- Nuclear Engineering Division and Environmental Engineering Division
ISBN:
0-7918-3732-7
PROCEEDINGS PAPER
Development of Fluorination Decontamination Technique for Uranium Bearing Wastes
Kenichi Fujiwara,
Kenichi Fujiwara
Radioactive Wastes Management Funding and Research Center
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Tomozou Sasaki,
Tomozou Sasaki
Radioactive Wastes Management Funding and Research Center
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Yuzou Saita,
Yuzou Saita
Radioactive Wastes Management Funding and Research Center
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A. Kamei,
A. Kamei
Ishikawajima-Harima Heavy Industries Company, Ltd., Koto-ku, Japan
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T. Fukui
T. Fukui
Ishikawajima-Harima Heavy Industries Company, Ltd., Koto-ku, Japan
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Kenichi Fujiwara
Radioactive Wastes Management Funding and Research Center
Tomozou Sasaki
Radioactive Wastes Management Funding and Research Center
Yuzou Saita
Radioactive Wastes Management Funding and Research Center
A. Kamei
Ishikawajima-Harima Heavy Industries Company, Ltd., Koto-ku, Japan
T. Fukui
Ishikawajima-Harima Heavy Industries Company, Ltd., Koto-ku, Japan
Paper No:
ICEM2003-4527, pp. 1277-1285; 9 pages
Published Online:
February 24, 2009
Citation
Fujiwara, K, Sasaki, T, Saita, Y, Kamei, A, & Fukui, T. "Development of Fluorination Decontamination Technique for Uranium Bearing Wastes." Proceedings of the ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. 9th ASME International Conference on Radioactive Waste Management and Environmental Remediation: Volumes 1, 2, and 3. Oxford, England. September 21–25, 2003. pp. 1277-1285. ASME. https://doi.org/10.1115/ICEM2003-4527
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