Executive summary of RAK-2

The RAK-2 project comprised three research areas: RAK-2.1 Studies of the consequences of selected severe accident scenarios and phenomena in Nordic nuclear reactors; RAK-2.2 Development and testing of a computerised accident management support system (CAMS); RAK-2.3 Data collection on different mobile reactors and the British reactor types for extension of the Nordic database started in the previous NKS programme covering the reactors in Nordic close neighbourhood. The work scope of the RAK-2 project has involved research on quantification of the effects of selected severe accident phenomena for Nordic nuclear power plants, development and testing of a computerised accident management support system and data collection and description of various mobile reactors an of different reactor types existing in the UK. The severe accident phenomenology part of the project focused on studying in-vessel melt progression and core coolability at various stages of a severe accident. (EG)