Combating Fire with compressed Air Foam

The Jagdberg Tunnel on the A4 motorway
near Jena was opened in November 2014.
A compressed air foam extinguishing system was installed in the roughly 3.1 km long tunnel.
Prior to installation the functionality of the system was simulated at length and tried out during fire tests in the tunnel in May 2014.

The Jagdberg Tunnel is part of the German Unity No. 15 Transport Project, which involves the upgrading of the A4 between Eisenach and Görlitz. The 130 km route which has been widened for six lanes largely lies in the jurisdiction of the Free State of Thuringia. The Deutsche Einheit Fernstraßenplanungs- und -bau GmbH (DEGES) was commissioned to build the contract sections containing the tunnel. The A4 was produced during the 1930s and no longer complies with modern standards. Extreme inclines of up to six per cent, unfavourable visibility conditions in bends as well as narrow shoulders or a...

Related articles:

Issue 2010-07 Fire Protection

Fire-safety in the Channel Tunnel

At around 50 km, the Channel Tunnel between Co-quelles, in France, and Folke-stone, England, is currently the world‘s longest rail tunnel. It is used by Eurostar trains on their route from London to...

more
Issue 2009-01 Construction started on the Jagdberg Tunnel

Construction started on the Jagdberg Tunnel in Thuringia/D

Germany

The Eisenach–Görlitz A 4 federal motorway is highly significant as an important west-east axis in the German and European highway network (European highway E 40). It connects the East German centres...

more
Issue 2021-01

Investigation of Fires with Electric Vehicles in Underground Traffic Areas

In the few cases of fire that have already occurred, intense fires were sometimes observed that were difficult for emergency services to extinguish completely. Initial experiences with such fires (and...

more
Germany

Investigation of Fires with Electric Vehicles in Underground Traffic Areas

In the few cases of fire that have already occurred, intense fires were sometimes observed that were difficult for emergency services to extinguish completely. Initial experiences with such fires (and...

more
Issue 2011-08

Fire Tests for Water Mist Fire Suppression Systems

In May and June 2011 more than 30 major fire tests were carried out on water mist fire suppression systems in conjunction with fire ventilation in road tunnels to establish their efficacy for the...

more