Consulting, expert opinion and research

We provide professional consultancy services in all relevant aspects on tunnel ventilation, aerodynamic, climate, safety and risk analysis, tunnel equipment, and pollution dispersion. We prepare expert opinions in these areas on behalf of constructors and public authorities. We draw on our long-term experience of more than 1000 international projects and the continuous engagement in research and development.

Research and development

B049_Aerodynamics

High-speed rail tunnels in Sweden

Numerical studies regarding tunnel aerodynamics

Cross-City

Cross City Tunnel, Sydney

Tunnel ventilation

Muenchen-suedwest

Munich - Mittlerer Ring south-west

Prognosis of the impacts of pollutants

Frauenfeld

Frauenfeld – F21 Bypass

Air dispersion study

Gotschna

Gotschnatunnel, bypass Klosters

Tunnel ventilation

BalmenrainUznaberg

Balmenrain and Uznaberg tunnels

Tunnel ventilation

Koe-Bogen

Kö-Bogen Tunnel, Düsseldorf

Services related to the tunnel ventilation

Agnesburg

Tunnel Agnesburg, Aalen-Westhausen

Tunnel ventilation

Wimpasing

Tunnel Wimpasing, bypass Ampfing

Detailed design, functional tests and fire tests

Meran

Bypass Meran

Tunnel ventilation

Arlberg

Arlberg Street Tunnel

Expert opinion on tunnel safety

Dormagen

Gallery of Dormagen-Horrem

Risk-based safety evaluation

SchwGmuend-Einweisung

Gmünder Einhorn-Tunnel

Instruction of rescue personnel

S74

Luise-Kiesselbach-Tunnel/Heckenstallertunnel, Munich

Tunnel ventilation

W_004

Research project REHSTRAIN

Aero-thermal conditions in rail tunnels

New or adapted norms and guidelines lead to changing requirements for tunnel constructions. Changes of the usage requirements can lead to new performance requirements. With the check of the functional and safety requirements of existing tunnels by HBI, the safety level is determined and the need for action and the measures to be realized are demonstrated.

Safety check​​​​​​

LBT-Lueft

Lötschberg base tunnel

Ventilation and safety concept

B009_Young-Dong

Young Dong railway tunnel

Ventilation and risk control

B17_Groene-Hart

Tunnel Groene Hart, Dordtsche Kil and Rotterdam Noordrand

Efficiency of the emergency ventilation

B23_Stuttgart-U12

Stuttgart city railway: U12 Hallschlag-Münster

Safety and ventilation concept

24_klein

Augsburg mobility hub

Safety and ventilation concept

Rheinufer

Tunnel Rheinufer Düsseldorf

Smoke extraction and keeping smoke-free

Freiburg

City Tunnel Freiburg

Technical safety risk analysis

Boehaemmer

Tunnel Böhämmer

Safety analysis

Kiesberg

Kiesberg tunnel Wuppertal

Tunnel ventilation retrofit

Arlberg

Arlberg Street Tunnel

Expert opinion on tunnel safety

Dormagen

Gallery of Dormagen-Horrem

Risk-based safety evaluation

HBI has the high level of competence and broad experience required to serve as an independent inspection entity. The service that includes assessment of the safety and scrutiny of the safety documentation is targeted to assist in particular the administrative authority. The EU-Directive 2004/54/EC dated 29 April 2004 on minimum safety requirements for tunnels in the trans-European road network prescribes that a safety documentation has to exits. Moreover, the organization shall persist of various entities with clearly defined roles and responsibilities: administrative authority, tunnel manager, inspections entity and safety officer.

Investigating body 2004/54/EC