Burnup study on the effective transmutation of minor actinides based on multi-enrichment fuel in the ADS subcritical reactor

Abstract

In order to solve the problem that the single-enrichment core parameters of the ADS subcritical reactor exceed the safety limit and to improve the MAs effective transmutation in the ADS system, short-term and long-term burnup calculations are carried out based on multi-enrichment fuel and the physical parameters of the sub-critical reactor are calculated and filtered throughout the calculation process. The MAs effective transmutation of the ADS subcritical reactor is calculated using the double-layer nested MAs effective transmutation calculation method. The short-term case is obtained for the target parameters, different fuel partitioning methods, and different fuel composition; long-term burnup calculations are conducted under different refueling methods; finally, a recommended case is given. The ADSOC code, coupled with FLUKA and OpenMC codes, can realize the multi-enrichment fuel refueling, as well as tracking and screening of physical parameters during burnup calculations in the ADS subcritical reactor.