VENUS-2 3-D MOX core benchmark, results of Framatome ANP

A solution for the VENUS-2 3D MOX core benchmark (specified by NEA/WPPR) is presented. Essentially a few-group 3D transport calculation has been performed with pin cell homogenized cross sections generated by CASMO-4 ('L-Lib' based on ENDF/B data). Despite the rather simple approach an eigenvalue very close to unity can be achieved. The comparison of the calculated 2D pin power distribution with the measured one shows an acceptable agreement. The calculated distribution is generally slightly flatter which is in accordance with most solutions already known from the VENUS-2 2D benchmark. A comparison with the pure uranium VENUS-1 core indicates that the reactivity of the MOX pins seems to be slightly overestimated relative to the uranium pins in this model. (author)