Depleted uranium as a backfill for nuclear fuel waste package

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Description

A method is described for packaging spent nuclear fuel for long-term disposal in a geological repository. At least one spent nuclear fuel assembly is first placed in an unsealed waste package and a depleted uranium fill material is added to the waste package. The depleted uranium fill material comprises flowable particles having a size sufficient to substantially fill any voids in and around the assembly and contains isotonically-depleted uranium in the +4 valence state in an amount sufficient to inhibit dissolution of the spent nuclear fuel from the assembly into a surrounding medium and to lessen the potential for nuclear ... continued below

Physical Description

29 p.

Creation Information

Forsberg, Charles W. December 1, 1997.

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Description

A method is described for packaging spent nuclear fuel for long-term disposal in a geological repository. At least one spent nuclear fuel assembly is first placed in an unsealed waste package and a depleted uranium fill material is added to the waste package. The depleted uranium fill material comprises flowable particles having a size sufficient to substantially fill any voids in and around the assembly and contains isotonically-depleted uranium in the +4 valence state in an amount sufficient to inhibit dissolution of the spent nuclear fuel from the assembly into a surrounding medium and to lessen the potential for nuclear criticality inside the repository in the event of failure of the waste package. Last, the waste package is sealed, thereby substantially reducing the release of radionuclides into the surrounding medium, while simultaneously providing radiation shielding and increased structural integrity of the waste package.

Physical Description

29 p.

Notes

OSTI as DE00756792

Medium: P; Size: 29 pages

Source

  • Patent File Date: 1997 Apr 15

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Identifier

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  • Report No.: PATENTS-US--A8858189
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 756792
  • Archival Resource Key: ark:/67531/metadc710878

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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.

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Creation Date

  • December 1, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • April 10, 2017, 7:06 p.m.

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Forsberg, Charles W. Depleted uranium as a backfill for nuclear fuel waste package, patent, December 1, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc710878/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.