New head process for non-HEU 99Mo production based on the oxidation of irradiated UO2-pellets forming soluble U3O8
| Autor: | Rudolf Muenze, Bernd Eichler, G. J. Beyer, Teja Reetz, J. J. Čomor |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Fission 020209 energy Pellets 99Mo chemistry.chemical_element 02 engineering and technology UO2 Enriched uranium 030218 nuclear medicine & medical imaging Nuclear physics 03 medical and health sciences 0302 clinical medicine 0202 electrical engineering electronic engineering information engineering Production (economics) lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Ceramic low-enriched uranium Safety Risk Reliability and Quality higly enriched uranium Waste management U3O8 Uranium Nuclear Energy and Engineering chemistry voloxidation Scientific method visual_art visual_art.visual_art_medium Head (vessel) lcsh:QC770-798 |
| Zdroj: | Nuclear Technology and Radiation Protection, Vol 31, Iss 1, Pp 102-108 (2016) |
| ISSN: | 1452-8185 1451-3994 |
| Popis: | All fission-based 99Mo producers worldwide are required to convert their 99Mo production processes from using highly enriched uranium to low-enriched uranium. At a recent IAEA meeting in Vienna, problems related to bottlenecks and target modification and optimization of low-enriched uranium-based 99Mo production processes were discussed. Ceramic UO2-pellets (as used in fuel) were excluded from the discussion with the argument that this material cannot be dissolved under practically applicable conditions. In this paper, we suggest transforming the non-soluble ceramic UO2 fuel-pellets into the U3O8 form by simple oxidation and the use of the soluble U-oxide modification as the starting material for the 99Mo production processes. Due to the absence of Al, larger target quantities could be processed and the waste volume could still be kept small. The approach is known and proven in nuclear technology. In principle, this new head process can be connected to any of the presently used 99Mo production procedures. |
| Databáze: | OpenAIRE |
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