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Title: Depleted uranium as a backfill for nuclear fuel waste package

Abstract

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.

Inventors:
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
756792
Patent Number(s):
PATENTS-US-A8858189
Application Number:
8-858,189; TRN: AH200022%%61
Assignee:
DOEGC; EDB-00:057970
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent Application
Resource Relation:
Patent File Date: 1997 Apr 15; Other Information: PBD: 1 Dec 1997
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; SPENT FUELS; PACKAGING; BACKFILLING; DEPLETED URANIUM; WASTE PRODUCT UTILIZATION; RADIOACTIVE WASTE DISPOSAL; WASTE FORMS

Citation Formats

Forsberg, Charles W. Depleted uranium as a backfill for nuclear fuel waste package. United States: N. p., 1997. Web.
Forsberg, Charles W. Depleted uranium as a backfill for nuclear fuel waste package. United States.
Forsberg, Charles W. Mon . "Depleted uranium as a backfill for nuclear fuel waste package". United States. https://www.osti.gov/servlets/purl/756792.
@article{osti_756792,
title = {Depleted uranium as a backfill for nuclear fuel waste package},
author = {Forsberg, Charles W.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {12}
}

Patent Application:

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