“Pre-normative research for safety of hydrogen driven vehicles and transport

through tunnels and similar confined spaces”,

14-15 July 2022, Brussels

Venue: The Hotel, 38 Boulevard de Waterloo, 1000 Bruxelles

The Dissemination Conference will present the main results of the project that has addressed the investigation of the safety of hydrogen powered vehicles and transport through tunnels and similar confined spaces.

In order to disseminate all the results of this project, different sessions will be organised during the day:

• Closing knowledge gaps, physical phenomena and engineering tools
• Recommendations to deal with unignited hydrogen releases and jet fires in confined spaces
• Recommendations to prevent and mitigate hydrogen deflagrations, DDT and detonations in confined spaces
• Recommendations to prevent hydrogen tank rupture in a fire
• Quantitative risk assessment
• Harmonised recommendations on response to hydrogen accidents
• Recommendations for RCS
• In addition the day will end with a Q&A session and closing remarks.

OBJECTIVES

• Critical analysis of effectiveness of conventional safety measures for hydrogen incidents
• Generation of unique experimental data using the best European hydrogen safety research facilities and three real tunnels
• Understanding of relevant physics to underpin the advancement of hydrogen safety engineering
• Innovative explosion and fire prevention and mitigation strategies
• New validated CFD and FE models for consequences analysis
• New engineering correlations for novel quantitative risk assessment methodology tailored for tunnels and underground parking
• Harmonised recommendations for intervention strategies and tactics for first responders

We invite you to participate in the Conference to learn first-hand about the progress and conclusions reached by the work team that has made this project possible.

TENTATIVE AGENDA

Day 1, 14 July 2022

Opening and project overview

09:00-09:05

Opening and welcome (D. Makarov, UU)

09:05-09:30

Hydrogen safety activities within FCH JU (A. Garcia Hombrados, FCH JU)

09:30-09:50

Overview of HyTunnel-CS project and structure of recommendations for stakeholders (D. Makarov, UU)

Closing knowledge gaps, physical phenomena and engineering tools

09:50-10:05

Concrete spalling by hydrogen jet fires (F. Markert, DTU)

10:05-10:20

Effect of tunnel slope on hydrogen dispersion (A. Venetsanos, NCSRD)

10:20-10:40

Effect of counter- and co-flow on hydrogen jets: simulations versus experiment (S. Giannissi, NCSRD)

10:40-10:55

Correlation for overpressure during ignited spurious hydrogen release (D. Cirrone, UU)

10:55-11:10

Coffee break

11:10-11:30

Dimensionless correlation for blast wave decay in a tunnel (V. Shentsov, UU)

11:30-11:50

Deflagration of hydrogen releases and in tunnel: large-scale experiments (W. Rattigan, HSE; E. Tolias, NCSRD)

11:50-12:10

Scaling experiments at reduced size to real tunnels (HSE)

12:10-12:30

Blast wave and fireball after hydrogen tank rupture: real tunnel experiments and simulations (D. Bouix, G. Bernard-Michel, CEA)

12:30-12:45

Drastic difference between fireball dynamics in the open space and in a tunnel (V. Shentsov, UU)

12:45-13:00

Interaction with water sprays and mist systems with hydrogen fire (J. Grune, PS)

13:00-14:00

Lunch

Recommendations to deal with unignited hydrogen releases and jet fires in confined spaces

14:00-14:20

Principles of inherently safer design of hydrogen vehicles for use in confined spaces (D. Makarov, UU)

14:20-14:35

Contribution of hydrogen released through TPRD to heat release rate of a vehicle fire (S. Kashkarov, UU)‎

14:35-14:55

Garages and maintenance shops: mitigation of pressure peaking phenomenon (A. Gaathaug, USN)

14:55-15:15

Underground parking: requirements to TPRD size and release direction (V. Shentsov, D. Cirrone, UU)

15:15-15:35

CFD and FEM study of hydrogen jet fire effect on tunnel structure (D. Cirrone, UU; L. Giuliani, DTU)

15:35-15:50

Coffee break

15:50-16:05

Erosion of tunnel materials by hydrogen jets (W. Rattigan, HSE)Recommendations to prevent and mitigate hydrogen deflagrations, DDT and detonations in confined spaces

16:05-16:25

Correlation for flame acceleration and DDT in non-uniform hydrogen-air mixtures in tunnels (M. Kuznetsov, KIT)

16:25-16:45

CFD and FEM study of hydrogen tank rupture on tunnel structure (V. Shentsov, UU; L. Giuliani, DTU)

16:45-17:05

Deflagration of non-uniform clouds with concentration gradient (HSE, NCSRD, CEA)

17:05-17:25

Blast wave attenuation by absorbing materials, water sprays and mist systems (KIT, PS)

17:25-17:40

Deflagration propagation through fire extinguishing foam (J. Grune, PS)

17:40-18:00

Q&A session (V. Molkov, UU)

Day 2, 15 July 2022

Recommendations to prevent hydrogen tank rupture in a fire

09:00-09:20

Design of tank-TPRD system to exclude rupture in a fire and the pressure peaking phenomenon (S. Kashkarov, UU)

09:20-09:40

Breakthrough safety technology of explosion free in a fire TPRD-less tank (S. Kashkarov, UU)

Quantitative risk assessment

09:40-10:05

Quantitative risk assessment methodology for hydrogen vehicles in confined space (P. Russo, URS)

10:05-10:25

QRA of hydrogen vehicles in road tunnels (S. Kashkarov, UU)

10:25-10:45

QRA of hydrogen trains in rail tunnels (P. Russo, URS)

10:45-11:05

QRA of hydrogen vehicles in underground parking (F. Markert, DTU)

11:05-11:20

Coffee break

Harmonised recommendations on response to hydrogen accidents

11:20-11:40

Project findings and their effect on intervention strategies and tactics (C. Brauner, IFA)

11:40-12:00

Interaction of HyTunnel-CS and HyResponder projects (T. Van Esbroeck, SPFI)

Recommendations for RCS

12:00-12:25

Recommendations for Regulations, Codes and Standards (J. van den Berg, NEN)Q&A session and closing remarks

12:25-12:50

Q&A session (V. Molkov, UU)12:50-13:00

Closing remarks (D. Makarov, UU)