Processing of Beryllium Oxide Fuels

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Preliminary results from experiments on the dissolution of beryllium metal and sintered UO2-BeO fuel pellets are reported. In all cases the pellets were fired in hydrogen at 1650-1800°C. Uranium, from UO2-BeO pellets containing more than 60% UO2, is readily leached with boiling 6-13 M HNO3 in about 6 hr. The BeO in these pellets dissolves only slowly in nitric acid; however, in 8 M HNO3-0.2M NaF, it dissolves at about the same rate as the UO2. Sintered pellets containing less than 10% UO2 do not dissolve rapidly in common aqueous reagents. The highest rates are obtained in boiling acidic fluoride … continued below

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10 pages : illustrations

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Warren, K. S. & Perris, L. M. February 13, 1961.

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Preliminary results from experiments on the dissolution of beryllium metal and sintered UO2-BeO fuel pellets are reported. In all cases the pellets were fired in hydrogen at 1650-1800°C. Uranium, from UO2-BeO pellets containing more than 60% UO2, is readily leached with boiling 6-13 M HNO3 in about 6 hr. The BeO in these pellets dissolves only slowly in nitric acid; however, in 8 M HNO3-0.2M NaF, it dissolves at about the same rate as the UO2. Sintered pellets containing less than 10% UO2 do not dissolve rapidly in common aqueous reagents. The highest rates are obtained in boiling acidic fluoride solutions; e.g., sintered BeO and BeO-8% UO2 are dissolved initially at a rate of about 1.7 mg min-1cm-2 (13 mils/hr) in boiling 5.8 M NH4HF2.

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10 pages : illustrations

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  • Report No.: CF-61-2-3
  • SuDoc Number: Y 3.At 7:22/CF-61-2-3
  • Accession or Local Control No: metadc1241161
  • Archival Resource Key: ark:/67531/metadc1241161

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  • February 13, 1961

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  • July 9, 2023, 5:51 p.m.

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  • April 29, 2024, 4:39 p.m.

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Warren, K. S. & Perris, L. M. Processing of Beryllium Oxide Fuels, report, February 13, 1961; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc1241161/: accessed September 7, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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