Design and operation of the Rover vacuum system

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The Rover process for recovering unused uranium from graphite fuels was operated during 1983 and 1984, and then shut down in 1984. The first steps of the process used fluidized alumina beds to burn away the graphite and produce a uranium bearing ash. The ash was then transferred to a different process cell for acid dissolution. At the time of shutdown, a significant, but unmeasureable, quantity of highly enriched uranium was left in the process vessels. Normal decontamination procedures could not be used due to plugged process lines and the exclusion of moderator materials (water or finely divided organic substances) ... continued below

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9 p.

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Wagner, E.P. Jr.; Griffith, D.L. & Rivera, J.M. August 1, 1997.

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Description

The Rover process for recovering unused uranium from graphite fuels was operated during 1983 and 1984, and then shut down in 1984. The first steps of the process used fluidized alumina beds to burn away the graphite and produce a uranium bearing ash. The ash was then transferred to a different process cell for acid dissolution. At the time of shutdown, a significant, but unmeasureable, quantity of highly enriched uranium was left in the process vessels. Normal decontamination procedures could not be used due to plugged process lines and the exclusion of moderator materials (water or finely divided organic substances) for criticality safety. The presence of highly enriched uranium in poorly defined quantity and configuration led to concerns for criticality safety, nuclear materials accountability, and physical security. A project was established to eliminate these concerns by cleaning and/or removing the process vessels, piping, and cells and sending the recovered Uranium Bearing Material (UBM) to secure storage. A key element of this project was the design of a system for collecting and transporting dry solids to a location where they could be loaded into critically favorable storage cans.

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9 p.

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INIS; OSTI as DE97053245

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  • Decontamination, decommissioning and reutilization of commercial and government facilities, Knoxville, TN (United States), 7-12 Sep 1997

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  • Other: DE97053245
  • Report No.: INEL/CON--97-00184
  • Report No.: CONF-970952--
  • Grant Number: AC07-94ID13223
  • Office of Scientific & Technical Information Report Number: 544714
  • Archival Resource Key: ark:/67531/metadc691011

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • August 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • June 13, 2016, 7:07 p.m.

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Wagner, E.P. Jr.; Griffith, D.L. & Rivera, J.M. Design and operation of the Rover vacuum system, article, August 1, 1997; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc691011/: accessed October 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.