031 - Suppressing tunnel fires with water mist with Johny Jessen

Can water mist be used in tunnels? I wondered that for a long time, and with every tunnel project, many questions around this issue were piling in my head. When dealing with large infrastructure projects you really need to work your way around multiple functional aspects of a system - maintenance, water and power consumption, drainage capacity, availability of elements and their certification... You would love to focus purely on the fire safety aspect of the issue, but you cannot. Unfor...