Single Model for the Performance of HEU/LEU Fissile and ThO sub 2 Fertile Fuel under Hypothetical Accident Conditions

摘要

The performance of TRISO coated highly enriched uranium/low-enriched uranium fissile and ThO sub 2 fertile fuel particles was studied under simulated accident conditions at temperatures up to 2700 exp 0 C. A total of 1663 fuel particles from eight different irradiation capsules with burnups covering the range of design conditions has been tested. The test data have shown very low failure fractions compared with predictions of previous models and provide the empirical basis for a single model for TRISO coating performance. (ERA citation 06:030640)