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ISTSS 2020

The 9th International Symposium on Tunnel Safety and Security (ISTSS) was held as an online event 5 - 7 May 2021.

ISTSS is now well established in the tunnel fire community and the success of ISTSS is a tribute to the pressing need for continued international research and dialogue on these issues.

The Proceedings include 42 papers and 13 extended poster abstracts. The online event includes 35 paper presentations and a poster session with 10 posters. You find more information about Proceedings ISTSS 2020 under Publications on the right hand side.

Each day was opened by invited Keynote Speakers addressing broad topics of pressing interest.
The Keynote Speakers, selected as leaders in their field, was:

  • Anne Lehan, German Highway Research Institute, Germany, 
  • Rune Brandt, HBI Haerter, Switzerland,
  • Trond H. Hansen, Oslo Fire and Rescue Service, Norway,
  • Mia Kumm, RISE, Sweden
  • Roland Leucker, Research Association for Tunnels and Transportation Facilities (STUVA), Germany. 

Program Day 1 -Wednesday May 5th 2021 (CET)


Program Day 2 - Thursday May 6th 2021 (CET)


Program Day 3 - Friday May 7th 2021 (CET)


ISTSS 2020 Achievement Award
Prof. Dr.-Ing. Alfred Haack 

Former Managing Director of STUVA, for his legendary and dedicated contribution to safety and security in tunnels.

ISTSS 2020 Best paper
Experimental study of backlayering length and critical velocity in longitudinally ventilated tunnel fire with wideshallow cross-section
By: Tianhang Zhang, Ganyu Wang, Kaijie Wu, Yadong Huang, Kai Zhu and Ke Wu

This paper presents very nice experimental and theoretical work on critical velocity and backlayering length, which largely verifies previous important findings. The authors show a high level of scientific knowledge in the subject and obtain interesting improvement of original work.

ISTSS 2020 Best poster
Current status of international tunnel standards and guidelines for water-based Fixed Fire Fighting Systems
By: Tim Usner and Armin Feltmann

The winners used the poster format in a good and balance way. It is appealing, clear, easy to access and easy to follow.