Stakeholders’ Workshop

On 4th and 5th May, the Sapienza University of Rome, on behalf of the project HyTunnel-CS, hosted the digital Stakeholders’ Workshop of the project. More than 220 people from Europe, United States, Canada and Australia registered for this event.

This workshop brought together tunnel authorities, tunnel managers & designers, tunnel operators, safety officers such as first responders, hydrogen-powered vehicles manufacturers and developers, as well as universities and research centres. The sessions were opened by HyTunnel-CS’ project officer, Alberto García Hombrados, who explained the FCH JU mission and highlighted the programme’s “bet on this kind of projects for a safe deployment of hydrogen technologies”. An introduction to the project, as well as a brief analysis of the state-of-the art, was given by Prof V. Molkov and Dr D. Makarov from Ulster University, institution coordinating the project.

During the sessions, aspects related to the safe use of Fuel Cell Electric Vehicles (FCEV) in tunnels and other confined spaces were highlighted and linked to the safety systems needed in both vehicles and infrastructures, as well as the steps required for a safe intervention of first responders.

The technical sessions included 22 presentations from HyTunnel-CS partners, which aimed at informing about the available results of the project. They ranged from the effect of mitigation systems on hydrogen release and dispersion in confined spaces to thermal and pressure effects of hydrogen jet fires and structure integrity, explosion prevention and mitigation, first responders’ intervention and quantitative risk assessment of FCEV in tunnels.

Along the workshop, participants were able to debate and ask questions to the speakers, enabling a multidirectional communication and an exchange of information that the project’s consortium could build upon in the future.

Moreover, sessions were also open for external companies such as Northern Trains Limited and Alstom, two representative members of the Stakeholders Advisory Board of the project, who gave presentations about their work specifically related with hydrogen in the rail sector.

This workshop was considered a milestone for the HyTunnel-CS project partners, as it builds on previous exchanges of knowledge between academia, emergency services, research and development organisations by focussing on the first available results of the project.


List of presentations from Digital Stakeholder’ Workshop
(HyTunnel-CS project)

Monday 4th May 2020

09:30-10:00 Opening and FCH 2 JU presentation (A. Garcia Hombrados, FCH 2 JU)
10:10-10:40 Introduction to HyTunnel-CS project by the coordinator (V. Molkov, UU)
10:50-11:20 The critical analysis of the state-of-the-art (D. Makarov, UU)
Session: Effect of mitigation systems on hydrogen release and dispersion in confined spaces
11:40-12:00 Overview of research programme on unignited releases (A. Venetsanos, NCSRD)
12:05-12:25 Non-adiabatic blowdown model (S. Kashkarov, UU)
12:55-13:15 Mechanical ventilation in underground parking (V. Shentsov, UU)
13:20-13:40 Numerical study of tunnel slope effect on hydrogen dispersion (I. Tolias, NCSRD)
13:45-14:05 Experimental investigation on the efficiency of mechanical ventilation on dispersion of hydrogen release (J. Grune, Pro-Science)
Session: Thermal and pressure effects of hydrogen jet fires and structure integrity
15:00-15:20 Overview of research programme on jet fires (F. Markert, DTU)
15:25-15:45 Fire resistance rating of composite tank in a fire (S. Kashkarov, UU)
15:50-16:10 Pressure peaking phenomenon: unignited and ignited releases (V. Shentsov, UU)
16:15-16:35 Effect of jet fire on mechanical ventilation system in underground parking (D. Cirrone, UU)
16:40-17:00 Effect of hydrogen jet fire on a tunnel structure (CFD part) (D. Cirrone, UU)
17:05-17:25 The pressure peaking phenomenon in garages: CFD model (D. Cirrone, UU)
17:30-17:50 Jet fires effects: experimental studies (D. Bouix, CEA)

Tuesday 5th May 2020

Session: Explosion prevention and mitigation (Part 1)
09:30-9:50 Overview of research programme on explosions (W. Rattigan, HSE)
09:55-10:15 Blast wave decay in a tunnel (W. Dery, UU)
10:20-10:40 Deflagration of non-uniform hydrogen-air cloud after release in tunnel (T. Jordan, KIT)
10:45-11:05 Effect of blast wave after tank rupture in a fire on a tunnel structure (V. Shentsov, UU)
Session: Explosion prevention and mitigation (Part 2)
11:30-11:50 Pre-tests for assessment of high-pressure tank rupture in a tunnel (D. Bouix, CEA)
11:55-12:15 Performance of TPRD-less tank in a fire (S. Kashkarov, UU)
Session: First responders’ intervention
12:30-12:50 Basics and principles of fire intervention (M. Van de Veire, SPFI)
12:55-13:15 Framework conditions for firefighters’ education and training (C. Brauner, IFA)
Session: Quantitative risk assessment of FCEV in tunnel
13:20-13:40 Quantitative risk assessment model (S. Kashkarov, UU)
13:45-14:05 Modelling hydrogen vehicles road tunnel accidents using BBN Bayesan (F. Markert, DTU)
Session: Stakeholders Presentations
15:00-15:30 Tees Valley Hydrogen Trains (M. Lipscomb, Northern Trains Limited)
15:30-16:00 Breeze and iLint trains (S. Ring, Alstom)
16:10-16:20 Concluding remarks by Professor Paola Russo