Since 2010 Samuel Rigert works as Ventilation and Safety expert for Amberg Engineering Ltd. and since 2015 he is Dept. Head of Ventilation and Safety. He contributes regularly papers to some of the most relevant conferences in the field of tunnel safety and ventilation. He is a specialist in the field of numerical simulations and responsible for Amberg Engineerings in-house CFD formation programme. Samuel Rigert has a broad spectrum of references covering road, rail and metro projects, including Brenner Base Tunnel, Lion-Turin Base Tunnel (57 km), Follo Line Tunnel (20 km), FinEst Link (92 km) as well as tunnels for the Olympic Games in Sochi. He also has been involved in research projects investigating emergency management in large infrastructures or new passive ventilation elements to improve smoke propagation in case of fire incidents.