Tunnel protection
Security systems for underground traffic facilities must respond rapidly and reliably while at the same time displaying the highest possible degree of immunity to interference or false alarms.

Accident in tunnels and underground traffic facilities can quickly develop into disasters unless the correct protective measures are taken immediately. The reasons for the high level of risk are increasing traffic densities, the transport of more goods and combustible materials, and the limited space available for rescue and intervention. Furthermore, a small fire in a tunnel tube can spread rapidly within a few minutes due to the influence of wind (draughts, slipstreams, ventilation and natural convection). The rapid spread of smoke and the enormous generation of heat are an immediate threat to life and are often underestimated.

Modern tunnels therefore should be monitored by a fire detection system that immediately identifies an incipient fire and automatically actuates the appropriate protective systems. The OTS 2000/4000 fire detection system locates the fire precisely to within 1.5 - 4 metres and automatically actuates the extinguishing, ventilation and intervention system at the actual site of the burning object. The system also provides informative data about the development and size of the fire and the direction in which it is moving.

Special Hazard Buildings
Increased safety consciousness calls for modern fire protection equipment even in shorter tunnels. It has also resulted in the rising demand of fire surveillance in potentially hazardous facilities such as:

service tunnels	dirt, dust, long range, maintenance
cable routes or ducts	electromagnetic disturbance
production facilities	dirt, dust, smoke, temperature fluctuations
warehouses	maintenance, installation
hospitals (supply and communication line)	inaccessible area, infrastructure
airport hangars	environmental conditions, exhaust gas
nuclear plants and storage sites	radioactivity
silos	ATEX area
conveyor belts	dirt, dust, long range, maintenance
floating roof tanks	ATEX area, rim seal fire protection

In the above applications, environmental conditions challenge the reliability and feasibility of other fire detection equipment, but for which the OTS 2000/4000 system is ideally suited due to its exceptional features.

These systems have been proven over several years, and their reliability has been repeatedly demonstrated by more than 1000 installations throughout the world. In co-operation with dominant partners in fire safety worldwide, OTS technology has been successfully installed for fire detection in hundreds of kilometres of road and rail tunnels and for numerous other applications.

As the pioneering force, LIOS Technology has established a new standard in modern fire detection.