30th International Conference on Nuclear Energy for New Europe (NENE), Bled, Slovenia, 6 - 09 September 2021
The improvement of the performance of the modern integral codes for carrying out severe accident analyses in nuclear power plants is one of the key elements of the Nuclear Safety Research program of the Karlsruhe Institute of Technology (KIT). This activity is performed in the frame of the participation of KIT in European projects and international cooperation's on the safety assessment of nuclear power plants and also aims at supporting decision making under high uncertainties for all emergency situations. The use of the Accident Source Term Evaluation Code (ASTEC), developed by the Institut de Radioprotection et de Surete Nucleaire, plays a central role in the KIT strategy on the research activities of severe accidents in LWRs. In the paper examples of the most recent applications of the ASTEC code at KIT in this research field are presented.