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A preliminary validation study of PuO2 incorporation into zirconolite glass-ceramics

Published online by Cambridge University Press:  30 January 2018

Stephanie M. Thornber ,
Martin C. Stennett ,
Eric R. Vance ,
Dorji T. Chavara ,
Ian Watson ,
Miodrag Jovanovic ,
Joel Davis ,
Daniel Gregg  and
Neil C. Hyatt
Stephanie M. Thornber*
Affiliation:
Immobilisation Science Laboratory, Materials Science and Engineering Dept., The University of Sheffield, Mapping Street, Sheffield, S1 3JD, UK
Martin C. Stennett
Affiliation:
Immobilisation Science Laboratory, Materials Science and Engineering Dept., The University of Sheffield, Mapping Street, Sheffield, S1 3JD, UK
Eric R. Vance
Affiliation:
Australian Nuclear Science and Technology Organisation, Kirrawee DC, Locked Bag 2001, NSW 2232, Australia
Dorji T. Chavara
Affiliation:
Australian Nuclear Science and Technology Organisation, Kirrawee DC, Locked Bag 2001, NSW 2232, Australia
Ian Watson
Affiliation:
Australian Nuclear Science and Technology Organisation, Kirrawee DC, Locked Bag 2001, NSW 2232, Australia
Miodrag Jovanovic
Affiliation:
Australian Nuclear Science and Technology Organisation, Kirrawee DC, Locked Bag 2001, NSW 2232, Australia
Joel Davis
Affiliation:
Australian Nuclear Science and Technology Organisation, Kirrawee DC, Locked Bag 2001, NSW 2232, Australia
Daniel Gregg
Affiliation:
Australian Nuclear Science and Technology Organisation, Kirrawee DC, Locked Bag 2001, NSW 2232, Australia
Neil C. Hyatt
Affiliation:
Immobilisation Science Laboratory, Materials Science and Engineering Dept., The University of Sheffield, Mapping Street, Sheffield, S1 3JD, UK
*
*Corresponding author: sthornber1@sheffield.ac.uk
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Abstract:

Zirconolite glass-ceramics are being developed as potential wasteforms for the disposition of Pu wastes in the UK. Previous studies utilised a variety of surrogates whilst this work uses both cold-press and sinter and hot isostatic press methods to validate the wasteform with PuO2. A cold press and sinter sample was fabricated as part of a validation study for plutonium incorporation in hot isostatically pressed (HIPed) wasteforms. The results confirmed the cold-press and sinter, achieved successful waste incorporation and a microstructure and phase assemblage that was in agreement with those expected of a HIPed equivalent. A HIP sample was fabricated of the same composition and characterised by SEM and XRD. Results were in agreement with the sintered sample and achieved complete waste incorporation into the glass-ceramic wasteform. These samples have demonstrated successful incorporation of PuO2 into glass-ceramic HIPed wasteforms proposed for processing Pu-based waste-streams in the UK.

Keywords

hot isostatic pressing (HIP)nuclear materialsPuwaste management

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Type
Articles
Information
MRS Advances , Volume 3 , Issue 20: Scientific Basis for Nuclear Waste Management XLI , 2018 , pp. 1065 - 1071
Copyright
Copyright © Materials Research Society 2018 

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References

Nuclear Decommissioning Authority, Conditioning of Plutonium Residues by Hot Isostatic Pressing and Options for packaging and Disposal (pre-conceptual stage) Summary of Assessment Report, 2009.Google Scholar
Scales, C. R., Maddrell, E. R., Hobbs, J., Stephen, R., Moricca, S., Stewart, M. W. A., Building flexibility into the design of a pilot plant for the immobilisation of Pu containing residues and wastes., Brussels, Belgium, 2013.CrossRefGoogle Scholar
Hobbs, J.W., Scales, C.R., Maddrell, E.R., Stewart, M.W.A., Moricca, S.A., A programme to immobilise plutonium residues at Sellafield, in: Paper for the Institute of Nuclear Materials Management 53rd Annual Meeting, Orlando, Florida, 2012.Google Scholar
Hyatt, N. C., Plutonium management policy in the United Kingdom: The need for a dual track strategy., Energy Policy. 101 (2017) 303–309.Google Scholar
Nuclear Decommissioning Authority, Geological Disposal: Review of Alternative Radioactive Waste Management Options, 2017.Google Scholar
Scales, C.R., Maddrell, E.R., Gawthorpe, N., Begg, B.D., Moricca, S., Day, R.A., Development of a Process for the Immobilisation of Actinide Containing Residues on the Sellafield site, in: ICEM, Scotland, UK, 2005.Google Scholar
Day, R.A., Moricca, S., Stewart, M.W.A., Begg, B.D., Maddrell, E.R., Scales, C.R., Gawthorpe, N., Technical Demonstration of Zirconolite Glass-Ceramics Processed in a Hot Isostatic Press: An Option for Immobilisation of Actinide Containing Residues at Sellafield, in: ICEM, Scotland, UK, 2005.Google Scholar
Thornber, S., Heath, P., Maddrell, E., Stennett, M.C., Hyatt, N.C., Investigation of Processing Parameters for the Consolidation of Actinide Glass-Ceramic Wasteforms by Hot Isostatic Pressing, MRS Advances. (2017) 1–6. doi:10.1557/adv.2017.219.Google Scholar
Thornber, S.M., Stennett, M.C., Hyatt, N.C., Investigation of Ce incorporation in zirconolite glass-ceramics for UK plutonium disposition, MRS Advances. (2017) 1–6. doi:10.1557/adv.2017.32.Google Scholar
Begg, B.D., Day, R.A., Brownscombe, A., Structural Effect of Pu Substitutions on the Zr-Site in Zirconolite, MRS Proceedings. 663 (2000). doi:10.1557/PROC-663-259.CrossRefGoogle Scholar
Jafar, M., Sengupta, P., Achary, S.N., Tyagi, A.K., Phase Evolution and Microstructural Studies in CaZrTi 2 O 7 -Nd 2 Ti 2 O 7 System, Journal of the American Ceramic Society. 97 (2014) 609–616. doi:10.1111/jace.12664.CrossRefGoogle Scholar
Meng, C., Ding, X., Li, W., Zhao, J., Yang, H., Phase structure evolution and chemical durability studies of Ce-doped zirconolite–pyrochlore synroc for radioactive waste storage, Journal of Materials Science. 51 (2016) 5207–5215. doi:10.1007/s10853-016-9822-x.Google Scholar
Coelho, A. A., Cheary, R. W., Smith, K. L., Analysis and Structural Determination of Nd-Substituted Zirconolite-4M, Journal of Solid State Chemistry. 129 (1997) 346–359.CrossRefGoogle Scholar
Vance, E. R., Lumpkin, G. R., Carter, M. L., Cassidy, D. J., Ball, C. J., Day, R. A., Begg, B. D., Incorporation of Uranium in Zirconolite, Journal of American Ceramics Society. 85 (2002) 1853–1859.Google Scholar