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Graphite disk UO/sub 2/ fuel elements designed for extended burnups at high powers

Journal Article · · Nucl. Technol.; (United States)
OSTI ID:5962943
Zircaloy-clad fuel elements containing UO/sub 2/ pellets separated by thin graphite disks have been irradiated to maximum burnups of 800 MWh/kg U (33 000 MWd/tonne U) at a linear power range of 30 to 70 kW/m. Fission gas release and sheath strains were lower than experienced for conventional fuel under comparable conditions because of the lower bulk average fuel temperatures in disk elements. The irradiated disk elements also showed good internal stability, tolerance to power ramping, and acceptable defect behavior.
Research Organization:
Atomic Energy of Canada Limited - Research Company,
OSTI ID:
5962943
Journal Information:
Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 71:2; ISSN NUTYB
Country of Publication:
United States
Language:
English