Adaptation of the DYN3D code for calculation of transients in graphite-moderated channel-type reactors - Analysis of reactivity accidents

The adaptation of the reactor dynamics code DYN3D to the analysis of EGP-6 type reactors (graphite-moderated channel-type reactor) has been performed. Test calculations of EGP-6 transients with an unauthorized movement of control rods as well as simulations of reactor experiments with control rod movement and short-time steam valve opening have been performed. Calculated results were compared with recorded reactivity measurement curves.