One Seven® introduces new ways of fighting fires in confined spaces. 
The protection of subways with stationary firefighting systems is becoming much more urgent
The catastrophic fires with numerous fatalities and high property damage in tunnels in recent years have clearly thrown up the necessity for more safety in such structures.
The terrorist attacks in the underground train systems in London and Korea added a new dimension. The protection of the strongly frequented subways with stationary firefighting systems is becoming that much more urgent, especially since the fire brigade personnel is not able to quickly reach the core of the fire because of the huge amount of heat and the fast spreading of the fire.
The long search for an effective firefighting method has been ended by special One Seven® tunnel firefighting system.
The application areas are:
An automatic firefighting system in the tunnel should fulfil several objectives
- Subway tunnels
- Subway stations
- Street tunnels
- Railway tunnels
- Mountain railway tunnels
- Supply tunnels
An automatic firefighting system in the tunnel should fulfil several objectives. Firstly, it must allow the approach of the fire brigade on the "upstream" side. Here, at a distance of about 20 m (range of a hand-held hose) the conditions that prevail should be such that they allow the presence of the fire brigade personnel with suitable protective clothing. Secondly, it must effectively prevent the spread of the fire on the "downstream" side.
Depending on the tunnel length, the tunnel is divided into any number of desired extinguishing zones. These consist of several sectors. One sector consists, for example, of 4 cross-pipes, which are fitted with the special patented multi-channel full spray nozzles. These sectors are then foam-sprayed intensely for short intervals.
The potential of danger is increasing month after month through:
- Terror attacks
- Assassinations
- Higher traffic volume
- More transportation of dangerous goods
- Sabotage
The specially developed tunnel firefighting systems that can be used in any tunnel can be deployed for the protection of: persons, tunnel structure, goods and merchandise and retention of the infrastructure.
