Serpent-COREDAX Analysis of CANDU-6 Time-Average Model

Abstract

COREDAX-2 is the nuclear core analysis nodal code that has adopted the Analytic Function Expansion Nodal (AFEN) methodology which has been developed in Korea. AFEN method outperforms in terms of accuracy compared to other conventional nodal methods. To evaluate the possibility of CANDU-type core analysis using the COREDAX-2, the time-average analysis code system was developed. The two-group homogenized cross-sections were calculated using Monte Carlo code, Serpent2. A stand-alone time-average module was developed to determine the timeaverage burnup distribution in the core for a given fuel management strategy. The coupled SerpentCOREDAX-2 calculation converges to an equilibrium time-average model for the CANDU-6 core.