The danger of NBC-attacks is constantly growing. In case of a catastrophe, professional emergency groups (e.g. fire brigade), rescue units (e.g. Red Cross) but also volontary helpers are trying to handle it and to minimise its effects. In order to cope with new dangers and threats, "catastrophe-units" need to be well trained under realistic conditions. Up to now, it has not been possible to reproduce those conditions because of unknown human factors & reactions and especially because of missing technology (like serious holistic simulation technologies and methods which are able to integrate and combine existing catastrophe tools). SimRad.NBC aims at developing the basis for such technologies and systems in order to train NBC-situations and of course to handle them in case of reality. The project evaluates simulation techniques to (1) explore human and technical dependencies on important influencing factors (e.g. how does an ambulance man really react in case of an NBC incident and is he able to use the NBC-detection devices; is the system really working when hundreds of volontary helpers use the existing tools etc.) and then (2) in the near future develop a NEW, coherent and integrated system to train and support professional as well as unprofessional helpers. As the project is analysing models and human factors concerning catastrophes also in general, the new knowledge can also be used for other emergency situations (climate crises etc.) and for their tools.