| NUKLEONIKA 2012, 57(1):87-93
APPLICATION OF THE GENERALY AVAILABLE WIMS VERSIONS
TO MODERN PWRs
Teresa Kulikowska, Anna Stadnik, Krzysztof Andrzejewski, Agnieszka Boettcher, Mariusz Łuszcz
Institute of Atomic Energy POLATOM, 05-400 Otwock/Świerk, Poland,
The generally available versions of WIMS (Winfrith improved multigroup scheme) code have been used at the Institute of Atomic Energy POLATOM (IEA POLATOM, Otwock/Świerk, Poland) for a variety of reactor lattice analyses since 1974. With planned construction of new generation PWRs (power water reactors) in Poland, a question of WIMSD-5B version applicability to lattice calculations of strongly heterogeneous assemblies with gadolinium poisoned pins became actual. The present paper deals with modeling of the fuel assemblies using the version of WIMSD-5B extended at the IEA POLATOM. It was shown that with a careful choice of computational options the code properly describes main physical parameters of modern PWR fuel assemblies.
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