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Release of fission products from irradiated aluminide fuel at high temperature

Conference ·
OSTI ID:6487878
Irradiated uranium aluminide fuel plates of 40% U-235 enrichment were heated for the determination of fission products released under flowing helium gas at temperatures up to and higher than the melting point of fuel-cladding material. The release of fission products from the fuel plate at temperature below 500/sup 0/C was found negligible. The firist rapid release of fission products was observed with the occurrence of blistering at 561 +- 1/sup 0/C on the plates. The next release at 585/sup 0/C might be caused by melting of the cladding material of 6061-Al alloy. The last release of fission product gases was occurred at the eutectic temperature of 640/sup 0/C of U-Al/sub x/. The released material was mostly xenon, but small amounts of iodine and cesium were observed.
Research Organization:
Kyoto Univ., Kumatori, Osaka (Japan). Research Reactor Inst.; Argonne National Lab., IL (USA); Oak Ridge National Lab., TN (USA)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
6487878
Report Number(s):
CONF-821155-7; ON: DE83007956
Country of Publication:
United States
Language:
English