ISTSS’25 PREVIEW | FIRE SAFETY
ISTSS’25 PREVIEW
Iceland is the meeting place for the International Symposium on Tunnel Safety and Security 2025 (ISTSS), with Reykjavik as host city over 9-11 April. The ISTSS 2025 gathering is preceded by the International Conference on Fire in Vehicles (FIVE), 7-8 April
The 11th International Symposium on Tunnel Safety and Security 2025 (ISTSS) will be held over 9-11 April in Reykjavik, Iceland. The event considers developments and technology in
all aspects of underground works and facilities, ranging from tunnels, shafts and caverns to metros, mines and garages, which the organiser, Sweden’s RISE research institute, notes “are increasingly important parts of societal infrastructure worldwide.” ISTSS 2025 takes place in conjunction with, and
follows, the 8th International Conference on Fire in Vehicles (FIVE), 7-8 April. The complementary events first, at FIVE, brief of
electric vehicles, batteries, alternative fuels and a range of risks and safety measures; then, second, at ISTSS, put such details along with many other types of vehicles into the wider setting of fire safety in transport tunnels (road, rail, metro) and other underground facilities.
FIVE - AGENDA The two-day programme for the 8th International Conference on Fire in Vehicles (FIVE) will cover the following themes: DAY 1 (7 APRIL) Keynote EV guidelines Battery fires Safety of Alternative fuels EV fire suppression
DAY 2 (8 APRIL) Keynote Car park fires Fire development Fire incidents Concluding Remarks
On the first day, planned presentations include: ● Operational guide for rescue operation involving lithium-ion batteries
● Safety guidelines for battery swap station ● Data to pre-empt EV battery fires due to manufacturing faults
● Experimental investigation of fire with multiple battery EVs in a storage setting
● Different triggers of thermal runway propagation in large-format lithium-ion battery modules
● Electric shock from a burning or crashes vehicle - risk assessment
● Hydrogen storage system for vehicles ● Performance evaluations of fire suppression for full- scale tests with EVs
ISTSS 2025 - PROGRAMME The three-day technical programme for ISTSS 2025 is as follows, with the titles of the planned presentations. Note that the first day has sequential talks while second days runs parallel tracks:
DAY 1 (9 APRIL)
Opening ● Road map of tunnel fire research ● Explosion hazards of vehicles with new energy carriers in tunnels and underground spaces
Session: Fire Dynamics ● Numerical study of the influence of wind on the smoke spread between underpasses
● Improved model of smoke layer thickness in naturally ventilated tunnel fires considering the effects of aspect ratio
● Study on the indoor-outdoor temperature difference- induced smoke re-stratification in naturally ventilated tunnel fires
● Vehicle impact on smoke stratification Afternoon
Session: Fixed Fire Fighting Systems (FFFS) ● Laboratory scale tests of FFFS and emergency ventilation interaction for highway tunnels
● Comparison of water-based FFFS for road tunnel application
● Study findings of water-based FFFS in tunnels
Session: Alternative Fuel Vehicles ● Preventing and managing NEC incidents in tunnels: safety concepts
● Explosion consequences in a tunnel: experimental evaluation of hydrogen leaks
● In-tunnel LIB cargo fire emergency and impacts on tunnel operational capability Session: Posters
DAY 2 (10 APRIL) Session: Keynote & Evacuation ● Evacuation and human behaviours in tunnel fires ● Flame behaviours and smoke transport in urban road tunnel fires under natural ventilation conditions
● Numerical investigation of the effects of ventilation on the tenability of egress paths in a metro tunnel fire
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