THE SEISMIC RESPONSE AFFECTION OF THE NUCLEAR REACTOR WWER 1000 BY NUCLEAR FUEL ASSEMBLIES

The paper deals with mathematical modelling and computer simulation of the seismic response of chosen components of the nuclear WWER 1000 reactor. The seismic response is investigated by numerical integration method in time domain. The seismic excitation is given by two horizontal and one vertical synthetic accelerograms at the level of the pressure vessel seating adjusted for a certain damping value 5 %. The main aim of the paper is seismic response assessment for two variants of nuclear fuel assemblies – VVANTAGE 6 and TVSA-T. The maximal values of displacements and linkages or component deformations are compared for both fuel assembly variants.