Title: The high burnup structure in nuclear fuel
Authors: RONDINELLA VincenzoWISS Thierry
Citation: MATERIALS TODAY vol. 13 no. 12 p. 24 - 32
Publication Year: 2010
JRC N°: JRC61323
ISSN: 1369-7021
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC61323
Type: Articles in periodicals and books
Abstract: During its operating life in the core of a nuclear reactor, nuclear fuel is subjected to significant restructuring processes determined by neutron irradiation directly through nuclear reactions and indirectly through the thermo-mechanical conditions established as a consequence of such reactions. In today's light water reactors, starting after ~4 years of operation the cylindrical UO2 fuel pellet undergoes a transformation affecting its outermost radial region. The discovery of a newly forming structure required answering important questions concerning the safety of extended fuel operation, and still today poses a fascinating scientific challenge to fully understand the microstructural mechanisms responsible for its formation.
JRC Directorate:Nuclear Safety and Security

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