Servicing and Maintenance of Water-Mist Fire-Fighting Systems in Road Tunnels

Operators are deciding ever more frequently to equip their tunnels with a water-mist fire-fighting system (water-mist FFS). Here, water-mist FFS should not be regarded as “add-ons”, but should, instead, be integrated into the overall safety concept from the very start of the project. Regular servicing and maintenance is necessary to assure the availability of the FFS. This, of course, also applies to many facilities in the tunnel, such as the lighting, ventilation and event detection systems, for example. Recently, and particularly in Germany, the question has arisen of what costs will be incurred from installing fire-fighting systems.

Water mist as a fire-fighting technology has been standard equipment in very many sectors for many years now, for the protection of industrial facilities, buildings, trains and cruise ships, for example. Water-mist FFS are also increasingly being installed in tunnels (Fig. 1). The following provides an overview of the scope and costs of the servicing and maintenance of FFS. Experience gained from installations completed in the past is taken as the basis for evaluation. Codes and standards are also examined, where they are applicable to FFS in tunnels.

1 Water-Mist FFS in Tunnels – System...

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