Validation of WIMS-AECL with ENDF/B-V Against Phase B Reactor Physics Tests at Wolsong Units 2 and 3

Abstract

The validation calculations of the WIMS-AECL code as a lattice physics design code of CANDU-PHWR were performed with the Phase-B reactor physics test results of Wolsong units 2 and 3. The physics simulation results for the two new Wolsong units by WIMSRFSP code system show considerable improvement in prediction of boron reactivity worth when they are compared with those for the Wolsong unit 1 and Point Lepreau with the same code system. But there are differences between the calculated and the measured values in liquid zone level worth and large errors in the heat transport system and moderator temperature coefficient calculations. To elaborate the causes for these differences and errors, further studies need to be made.