Flexible process options for the immobilisation of residues and wastes containing plutonium

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dc.contributor.authorStewart, MWAen_AU
dc.contributor.authorMoricca, SAen_AU
dc.contributor.authorBegg, BDen_AU
dc.contributor.authorDay, RAen_AU
dc.contributor.authorScales, CRen_AU
dc.contributor.authorMaddrell, ERen_AU
dc.contributor.authorEilbeck, ABen_AU
dc.date.accessioned2010-08-10T06:22:44Zen_AU
dc.date.available2010-08-10T06:22:44Zen_AU
dc.date.issued2007-09-02en_AU
dc.date.statistics2007-09-02en_AU
dc.description.abstractResidues and waste streams containing plutonium present unique technical, safety, regulatory, security, and sociopolitical challenges. In the UK these streams range from lightly plutonium contaminated materials (PCM) through to residues resulting directly from Pu processing operations. In addition there are potentially stocks of Pu oxide powders whose future designation may be either a waste or an asset, due to their levels of contamination making their reuse uneconomic, or to changes in nuclear policy. While waste management routes exist for PCM, an immobilisation process is required for streams containing higher levels of Pu. Such a process is being developed by Nexia Solutions and ANSTO to treat and immobilise Pu waste and residues currently stored on the Sellafield site. The characteristics of these Pu waste streams are highly variable. The physical form of the Pu waste ranges from liquids, sludges, powders/granules, to solid components (e.g., test fuels), with the Pu present as an ion in solution, as a salt, metal, oxide or other compound. The chemistry of the Pu waste streams also varies considerably with a variety of impurities present in many waste streams. Furthermore, with fissile isotopes present, criticality is an issue during operations and in the store or repository. Safeguards and security concerns must be assessed and controlled. The process under development, by using a combination of tailored waste form chemistry combined with flexible process technology aims to develop a process line to handle a broad range of Pu waste streams. It aims to be capable of dealing with not only current arisings but those anticipated to arise as a result of future operations or policy changes.en_AU
dc.identifier.citationStewart, M. W. A., Moricca, S. A., Begg, B. D., Day, R. A., Scales, C. R., Maddrell, E. R., & Eilbeck, A. B. (2007). Flexible process options for the immobilisation of residues and wastes containing plutonium. Paper presented to the The 11th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2007), 2nd – 6th September 2007. Bruges, Belgium: Oud Sint-Jan Hospital Conference Center. In Proceedings of the 11th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B, 1453-1460(ICEM2007-7246). doi:10.1115/ICEM2007-7246en_AU
dc.identifier.conferenceenddate6 September 2007en_AU
dc.identifier.conferencenameThe 11th International Conference on Environmental Remediation and Radioactive Waste Managementen_AU
dc.identifier.conferenceplaceBruges, Belgiumen_AU
dc.identifier.conferencestartdate2 September 2007en_AU
dc.identifier.govdoc2288en_AU
dc.identifier.isbn9780791843390en_AU
dc.identifier.pagination1453-1460en_AU
dc.identifier.urihttp://dx.doi.org/10.1115/ICEM2007-7246en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2159en_AU
dc.language.isoenen_AU
dc.publisherAmerican Society of Mechanical Engineers (ASME)en_AU
dc.subjectPlutoniumen_AU
dc.subjectResiduesen_AU
dc.subjectSafeguardsen_AU
dc.subjectWaste processingen_AU
dc.subjectSolidificationen_AU
dc.subjectANSTOen_AU
dc.titleFlexible process options for the immobilisation of residues and wastes containing plutoniumen_AU
dc.typeConference Paperen_AU
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