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Correlation of creep and swelling with fuel pin performance

Conference ·
OSTI ID:7362766

The HEDL PNL-11 experiment described was one in a series of fueled subassemblies irradiated in EBR-II to demonstrate the adequacy of the FFTF fuel pin design. The cladding material, dimensions, and fuel density are prototypic of FFTF. Because neutron flux in EBR-II is lower than in FFTF, the uranium enrichment is higher in these experimental fuel pins, irradiated in EBR-II, than the FFTF enrichment for comparable linear heat rates. Some pertinent oprating conditions for the center fuel pin in this experiment are listed. This 37-pin subassembly represents, at 110,000 MWd/MTM, the highest burnup yet attained by a prototypic FFTF subassembly. Similarly, this is the highest fluence presently attained by prototypic fuel pins. A cladding breach occurred in one fuel pin which is presently being examined. Results are presented and discussed.

Research Organization:
Hanford Engineering Development Lab., Richland, WA (USA)
DOE Contract Number:
E(45-1)-2170
OSTI ID:
7362766
Report Number(s):
HEDL-SA-974; CONF-751101-75
Country of Publication:
United States
Language:
English