Geologic disposal of HEU aluminum-based DOE fuels

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This paper describes the disposal criticality analysis for canisters containing highly enriched uranium (HEU) in the form of aluminum-based Department of Energy spent nuclear fuel (DOE-SNF). The analysis is based on Massachusetts Institute of Technology (MIT) U-Al fuel with 93.5% enriched uranium which has a relatively heavy linear uranium loading. A canister design with 64 MIT assemblies (16/layer, 4 layers) totaling 35.2 kg of uranium was developed for this fuel type. A radial cross-sectional view of the MIT SNF canister is shown in a figure. Gadolinium phosphate (GdPO{sub 4}) distributed on, or in, carbon steel plates was incorporated into a ... continued below

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7 p.

Creation Information

Davis, J.W. & Gottlieb, P. March 1, 1998.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 13 times . More information about this report can be viewed below.

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  • Davis, J.W. Framatome Cogema Fuels, Las Vegas, NV (United States)
  • Gottlieb, P. TRW Civilian Radioactive Waste Management System, Las Vegas, NV (United States)

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Description

This paper describes the disposal criticality analysis for canisters containing highly enriched uranium (HEU) in the form of aluminum-based Department of Energy spent nuclear fuel (DOE-SNF). The analysis is based on Massachusetts Institute of Technology (MIT) U-Al fuel with 93.5% enriched uranium which has a relatively heavy linear uranium loading. A canister design with 64 MIT assemblies (16/layer, 4 layers) totaling 35.2 kg of uranium was developed for this fuel type. A radial cross-sectional view of the MIT SNF canister is shown in a figure. Gadolinium phosphate (GdPO{sub 4}) distributed on, or in, carbon steel plates was incorporated into a carbon steel internal basket structure within a 439 mm OD, 15 mm thick XM-19 canister shell. The DOE-SNF canister is placed in a Codisposal waste package (CWP) centered in a pentagonal array of five HLW canisters. The disposal criticality analysis methodology was applied to develop the following scenarios unique to the CWP in general, and to the Al-based fuel in particular: (1) aqueous corrosion of stainless steel HLW and fuel containers; (2) degradation of HLW glass to clay; (3) degradation of Al-based fuel concurrent with or after the HLW glass; and (4) degradation of fuel canister basket materials including criticality control material, coupled with flushing soluble compounds from the CWP. The EQ3/6 program was used to analyze the chemistry/geochemistry of the system. Parametric analyses were run on a range of possible distributions of fuel within the CWP using MCNP to identify the most reactive configurations and determine the minimum amount of neutron absorber required to be distributed with the fuel in its degraded configuration.

Physical Description

7 p.

Notes

INIS; OSTI as DE98005821

Medium: P; Size: 7 p.

Source

  • Other Information: PBD: Mar 1998

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  • Other: DE98005821
  • Report No.: DOE/RW--98005821
  • Grant Number: AC08-91RW00134
  • DOI: 10.2172/672212 | External Link
  • Office of Scientific & Technical Information Report Number: 672212
  • Archival Resource Key: ark:/67531/metadc711409

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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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Creation Date

  • March 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 13, 2017, 12:48 p.m.

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Davis, J.W. & Gottlieb, P. Geologic disposal of HEU aluminum-based DOE fuels, report, March 1, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc711409/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.