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Understanding Potential Release Mechanisms of Volatile Ruthenium During the Vitrification of High Level Waste

[+] Author Affiliations
Yvonne Lawson, Mark J. Sarsfield

National Nuclear Laboratory, Seascale, Cumbria, UK

Christopher M. Brookes, Carl J. Steele

Sellafield Ltd., Seascale, Cumbria, UK

Paper No. ICEM2009-16288, pp. 859-868; 10 pages
doi:10.1115/ICEM2009-16288
From:
  • ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management
  • ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management, Volume 1
  • Liverpool, UK, October 11–15, 2009
  • Conference Sponsors: Nuclear Engineering Division and Environmental Engineering Division
  • ISBN: 978-0-7918-4407-6 | eISBN: 978-0-7918-3865-X
  • Copyright © 2009 by ASME

abstract

In the U.K., High Level Waste from reprocessing operations is vitrified at the Sellafield Waste Vitrification Plant (WVP). A small number of the nuclides present in the waste have the potential to volatilize during vitrification. In order to prevent release of any radionuclides to the environment it is important to understand the mechanisms by which volatilization may occur and to have suitable controls in place. One element of particular concern is ruthenium, formed during the fission of nuclear fuel, which has the potential to form gaseous species such as RuO4 during the vitrification process and whose behavior must therefore be understood in order to underpin the safe operation of WVP.

Copyright © 2009 by ASME

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