IFPE/ZAPOROSHYE-V1K, Zaporoshye VVER 1000 fuel behaviour data (4-8 cycles, Burnup about 50 MWd/kg UO2)

Description: Fuel Assembly (FA) No.E0325 was operated in the first unit of Zaporozskaya NPP (Ukraine) during the fuel cycles 4-8 (VVER-1000). It was irradiated for 1142.1 effective days, to a burnup of 48.9 MWd/kgU on average for the whole FA and of 51.3 MWd/kgU in the 'hottest' fuel rod. The maximum local linear power in a fuel rod was 290 W/cm. The average linear power for the whole operational period of FA varied within the limits of 71-266 W/cm. The operational conditions of FA corresponded to the four-years fuel cycle, both on duration of the operation and burnup of the fuel. After the base irradiation, the FA N. E-0325 was subjected to PIE in the hot cells of SSC NIIAR (Russian Federation). The following information is provided: - Pre-characterization data: Fuel Pellet Material: UO2 and chemical analyses, Uranium isotopic composition U-235, 4.4 wt%, Grain size: 3.4 - 5.8 micron; Cladding Material: Zr-1% Nb; Rod parameters: Total length: 3837 [+2.0, -2.0] mm, Fill gas, pressure: He, 2.0-2.5 Mpa, Fuel assembly length: 4570 [+1.0, -1.0] mm; - Irradiation histories; - Post irradiation examinations; - Burnup at the EOL; - Measurement of outer cladding diameter of irradiated fuel rods; - Fuel rod length measurement; - Fuel-to-cladding gap measurement; - Fission Gas Release