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These fuel performance data concern 4 Gd2O3 doped UO2 rods irradiated in the BelgoNucleaire GAIN Project. The rods are identified as rods 9, 10, 11 and 12 or GD0301, GD0302, GD0701 and GD0702. GD0301 and GD0302 contain pellets doped with 3wt% Gd2O3 and rods GD0701 and GD0702 contain 7wt% doped pellets.
All rods were irradiated in BR3 to a final burn-up of approaching 40 MWd/kgU. In addition, rod GD701 underwent 2 overpower transients in BR2.
Non destructive PIE was performed at the end of each irradiation measuring: creep-down, rod and fuel length changes. After final discharge, destructive PIE was performed either at PSI in Switzerland or Windscale in the UK.
Keywords: experimental data, fuel pellets, fuel rods, gadolinium.