[en] The basic kinetic behavior of an accelerator driven system (ADS) is demonstrated using a point kinetic reactor model. The model was expanded to include also effects of fuel and moderator temperature changes on the dynamic response of a sub-critical system with and without an external source. This dynamic module allows also a description of protected and unprotected loss of flow (LOF) transients. By the unprotected case, non of the safety rods are inserted and in particular for sub-critical devices the source(s) remain(s) active. The entire spectrum of spatial dynamic effects including mechanical and material damage are to be simulated with the coupled codes SAS4A and CITATION. Preliminary results indicate that a relatively low power density will be required, so that the mechanical integrity of the core configuration can be assured under severe transient conditions. (orig.)