Nuclear research reactor activities in Greece

The main research and development activities performed in the Greek Research Reactor (GRR-1) by the reactor research and operation group of the Nuclear Technology Department in recent years are described. These activities are mainly the following: (a) development of experimental and computational methods for identifying GRR-1 parameters by stochastic analysis and study of the reactor's dynamic behaviour and reliability; (b) development of methods and techniques in neutron dosimetry and fuel burnup calculations; (c) reliability and fault detection techniques for large scale systems, methods of analysis for reliability and availability of systems involving a high level of risk and optimal supervision and failure detection; (d) feasibility studies on conversion of the present high enriched core to a low enriched one, and studies on safety-related parameters affected by such a core conversion; and (e) revision of the safety analysis report to include all changes and modifications made in GRR-1 systems and to cope with the new trends and considerations of reactor safety. (author)