The enrichment of regenerated uranium hexafluoride in a cascade with an intermediate product flow and additional feed flow of native or depleted uranium hexafluoride is studied. Low enrichment regenerated uranium hexafluoride to be used for the fabrication of nuclear fuel is produced in the main product flow; product with the same 235U concentration as in the main feed flow with regenerated uranium hexafluoride but significantly lower content of 232,234,236U is produced in the intermediate flow. To improve quality in terms of 236U, the point of entry of the additional feed flow of depleted uranium hexafluoride can be shifted closer to the main feed flow with a small increase of the total flow in the cascade. The separation work can be significantly reduced by introducing an additional intermediate product flow into the cascade.
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V. A. Palkin, “Separation of isotopes in a cascade with intermediate product flow,” Perspect. Mater. No. 8, 11–14 (2010).
V. A. Palkin, “Use of quasi-ideal cascades and the separation of operation for purifying regenerated uranium hexafluoride,” At. Energ., 121, No. 3, 152–157 (2016).
V. A. Palkin and E. V. Maslyukov, “Analytic evaluations of the content of isotopes of slightly enriched regenerated uranium in multi-stream optimal cascades,” At. Energ., 107, No. 6, 345–347 (2009).
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Translated from Atomnaya Énergiya, Vol. 126, No. 2, pp. 98–102, February, 2019.
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Palkin, V.A., Maslyukov, E.V. Purification of Regenerated Uranium Hexafluoride by Removal of 232,234,236U in the Intermediate Product of a Two-Feed-Flow Cascade. At Energy 126, 110–115 (2019). https://doi.org/10.1007/s10512-019-00523-3
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DOI: https://doi.org/10.1007/s10512-019-00523-3