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Title: Direct Investigations of the Immobilization of Radionuclides in the Alteration Phases of Spent Nuclear Fuel

Abstract

In an oxidizing environment, such as the proposed repository at Yucca Mountain (YM), rapid alteration rates are expected for spent nuclear fuel. Laboratory-scale simulations demonstrate that the dominant alteration products under YM repository conditions will be uranyl phases. There is an inadequate database to relate the effects of alteration products to the release of radionuclides, although this information is essential for providing realistic radionuclide-release estimates. It is likely that many radionuclides contained in spent fuel will be incorporated into alteration products with a potentially profound impact on the future mobility of radionuclides in the repository. Our objective is to characterize the incorporation of radionuclides into U(VI) alteration products by synthesizing uranyl phases doped with radionuclides, appropriate surrogate elements, or non-radioactive isotopes, followed by detailed phase characterization by diffraction and spectroscopic techniques. Th is research will permit a more realistic estimate of the release rates of radionuclides from the repository's near-field environment.

Authors:
; ;
Publication Date:
Research Org.:
University of Notre Dame, Notre Dame, IN; Argonne National Laboratory, Argonne, IL; University of Missouri-Rolla, Rolla, MO (US)
Sponsoring Org.:
USDOE Office of Environmental Management (EM) (US)
OSTI Identifier:
828407
Report Number(s):
EMSP-59960-2000
R&D Project: EMSP 59960; TRN: US0403968
DOE Contract Number:  
FG07-97ER14820
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Jun 2000
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 54 ENVIRONMENTAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; DIFFRACTION; NUCLEAR FUELS; RADIOISOTOPES; SPENT FUELS; YUCCA MOUNTAIN

Citation Formats

Burns, Peter C, Finch, Robert J, and Wronkiewicz, David J. Direct Investigations of the Immobilization of Radionuclides in the Alteration Phases of Spent Nuclear Fuel. United States: N. p., 2000. Web. doi:10.2172/828407.
Burns, Peter C, Finch, Robert J, & Wronkiewicz, David J. Direct Investigations of the Immobilization of Radionuclides in the Alteration Phases of Spent Nuclear Fuel. United States. doi:10.2172/828407.
Burns, Peter C, Finch, Robert J, and Wronkiewicz, David J. Thu . "Direct Investigations of the Immobilization of Radionuclides in the Alteration Phases of Spent Nuclear Fuel". United States. doi:10.2172/828407. https://www.osti.gov/servlets/purl/828407.
@article{osti_828407,
title = {Direct Investigations of the Immobilization of Radionuclides in the Alteration Phases of Spent Nuclear Fuel},
author = {Burns, Peter C and Finch, Robert J and Wronkiewicz, David J},
abstractNote = {In an oxidizing environment, such as the proposed repository at Yucca Mountain (YM), rapid alteration rates are expected for spent nuclear fuel. Laboratory-scale simulations demonstrate that the dominant alteration products under YM repository conditions will be uranyl phases. There is an inadequate database to relate the effects of alteration products to the release of radionuclides, although this information is essential for providing realistic radionuclide-release estimates. It is likely that many radionuclides contained in spent fuel will be incorporated into alteration products with a potentially profound impact on the future mobility of radionuclides in the repository. Our objective is to characterize the incorporation of radionuclides into U(VI) alteration products by synthesizing uranyl phases doped with radionuclides, appropriate surrogate elements, or non-radioactive isotopes, followed by detailed phase characterization by diffraction and spectroscopic techniques. Th is research will permit a more realistic estimate of the release rates of radionuclides from the repository's near-field environment.},
doi = {10.2172/828407},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {6}
}

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