DYN3D Calculations Compared to the Measurements in the V-1000 Test Facility

The full-scale zero power facilitlity V-1000 was build at the Russian Research Centre ?Kurtschatov Institute? for the investigation of neutron-physical parameters of the VVER-1000 core[1]. Two steady-state measurements and two transient experiments at the V-1000 were made available in the frame of EU project VALCO for the valida-tion of three-dimensional neutron kinetic codes. The results of the DYN3D code [2] by using three different libraries of two group constants generated with the cell codes HELIOS [3], CASMO [4] and WIMS [5] are compared with the measurements. The C/E comparisons of the radial power distribution at the axial detector position for the two steady-states with all control rods out of core and with inserted bank 10 are pre-sented in the next section. A single control rod of bank 9 is moved in the core and reverse in the transient experiment 1. The experiment 2 consists of a scram with a delayed motion of one stuck cluster The results of the calculations with the three li-braries are compared with the incore detectors signals and the signals of two ioniza-tion chambers in section 3. The reactivity calculated by inverse point kinetics from the ionization chambers signals and from the calculated core averaged fluxes are pre-sented.