Abstract
Nuclear Power Engineering Corporation (NUPEC) has conducted the irradiation test for verification of the high burnup fuel performance under the sponsorship of the Ministry of Economy, Trade and Industry. (NUPEC-HB Project)As for PWR, the fuel burnup is extended by two steps. The Step I fuel (maximum fuel assembly discharge burnup: 48GWd/t), has been utilized since 1989. And now, the preparation for the regular utilization of Step II fuel (maximum fuel assembly discharge burnup: 55GWd/t), is being conducted.The results of pre- and post-irradiation tests on the Step I fuel irradiated in the Takahama-3 of Kansai Electric Power Co., Inc. were analyzed and evaluated. The irradiation performance of fuel rod, pellet, cladding and fuel assembly showed no remarkable difference compared with that of other published paper. Consequently the reliability and integrity of the Step I fuel was verified.
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