The IAEA's Research Reactor Database (RRDB) contains administrative, technical and utilization information on over 670 research reactors including critical and sub-critical assemblies in 69 countries and the European Union. The information in the database is updated directly by facility or national representatives officially nominated as facility data providers, reviewed and accepted by the IAEA. Reactor operators are asked to confirm only the general information for shut down reactors and to update the information on operational reactors and reactors under construction or planned.