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The Ninth International Symposium on Tunnel Safety and Security (ISTSS)

5 May, 2021 - 7 May, 2021

Safety and Security have been high on the scientific agenda for decades, no more so than after the tragic attacks of nine-eleven in New York. The success of the International Symposium on Tunnel Safety and Security (ISTSS) is a tribute to the pressing need for continued international research and dialogue on these issues, perhaps in particular connected to complex infrastructure such as tunnels and tunnel networks. At SP, we are very proud to have been able to establish a regular ISTSS tunnel symposium that normally attracts over 200 delegates from all parts of the world.

The focus has mainly been on fires and safety in tunnels, but it is shifting more and more towards security including also other underground spaces such as garages, metros and caverns. The new terrorist threats and focus on how to solve these problems is increasing. The need for expertise in this area for underground infrastructure in general is continuously increasing. We urge scientists and practicing engineers in this field to consider ISTSS as good quality forum for presenting their results. The aim is to make ISTSS as a natural forum for scientists and practicing engineers to exchange information in the future.


5 May, 2021
7 May, 2021
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