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Title: Iodine and cesium in oxide fuel pellets and zircaloy-4 cladding of irradiated fuel rods (LWBR Development Program)

Technical Report ·
DOI:https://doi.org/10.2172/6053164· OSTI ID:6053164

Measurements of fission product iodine and cesium are reported for thoria and binary (ThO/sub 2/--UO/sub 2/) fuels with various irradiation histories. These volatile fission products were measured on the cladding surface or in the fuel by using specially developed radiochemical techniques. The radiochemical iodine measurements are found to be in general agreement with a theoretical iodine release model for irradiated fuel. Microprobe examinations of irradiated fuel rod cladding sections show fission product cesium to be located preferentially at the pellet to pellet interface region. Fission product iodine was detected in the interface region of one sample but generally remained below the microprobe limit of detection. 18 figures, 7 tables.

Research Organization:
Bettis Atomic Power Lab. (BAPL), West Mifflin, PA (United States)
DOE Contract Number:
EY-76-C-11-0014
OSTI ID:
6053164
Report Number(s):
WAPD-TM-1394; TRN: 79-013530
Country of Publication:
United States
Language:
English