Verification of Two-Group CERBERUS for a Loss-of-Coolant Analysis in a Simplified Reactor Model

Abstract

A true two-energy-group three-dimensional neutron-kinetics module with history-based local-parameter lattice-cell calculations has been implemented in the CERBERUS module of the Reactor Fuelling Simulation Program (RFSP). This project was conducted as part of the qualification of the RFSP code for analyses with lattice-cell parameters derived using the WIMS-AECL code. One component of the implementation of this calculational method is the qualification of the coding through testing and verification in computational benchmarks. In the computational benchmark problem analyzed in this paper, a simplified loss-of-coolant accident in a stylized CANDU reactor is analyzed. The results of the benchmark problem analyses indicate proper performance of the two-energy-group version of CERBERUS.