Published February 21, 2006 | Version v1
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ALTERATION OF U(VI)-PHASES UNDER OXIDIZING CONDITIONS

Creators

Description

Uranium-(VI) phases are the primary alteration products of the UO2 in spent nuclear fuel and the UO2+x, in natural uranium deposits. The U(VI)-phases generally form sheet structures of edge-sharing UO22+ polyhedra. The complexity of these structures offers numerous possibilities for coupled-substitutions of trace metals and radionuclides. The incorporation of radionuclides into U(VI)-structures provides a potential barrier to their release and transport in a geologic repository that experiences oxidizing conditions. In this study, we have used natural samples of UO2+x, to study the U(VI)-phases that form during alteration and to determine the fate of the associated trace elements

Availability note (English)

Available from INIS in electronic form; Also available from OSTI as DE00884959; PURL: https://www.osti.gov/servlets/purl/884959-i4lk9T/

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Additional details

Identifiers

URL
https://www.osti.gov/servlets/purl/884959-i4lk9T/;

Publishing Information

Imprint Pagination
2 p.
Report number
MOL--20060330.0282

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
37107460
Subject category
S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
Descriptors DEI
ELEMENTS; NATURAL URANIUM; NUCLEAR FUELS; POTENTIALS; RADIOISOTOPES; TRACE AMOUNTS; TRANSPORT
Descriptors DEC
ACTINIDES; ELEMENTS; ENERGY SOURCES; FUELS; ISOTOPES; MATERIALS; METALS; REACTOR MATERIALS; URANIUM

Optional Information

Contract/Grant/Project number
DC-- 47102
Funding organization
US Department of Energy (United States)