EGCERSIS is a starting research program aiming at defining a virtual collaborative training space for crisis management. It should provide the users (first and second aid, firefighters, etc.) with a way to virtually perform operational and strategic tasks of crisis management in digital twins of critical infrastructures. The training system is structured according to four main components: (i) protocol and tools for digital twins generation, (ii) scenario editor dedicated to defining crisis use-cases within the modeled digital twins, (iii) integration with the technological crisis management platform (RIO-Suite), and (iv) monitoring component in charge of the continuous edition of dashboards (real-time and afterward). The main expected benefit of the EGCERSIS program is to create a breakthrough in the way training and exercises are performed in critical sites.