Safe escape route with water mist extinguishing system

However, the building extension requires a second escape and rescue route. Consequently, a second escape stairwell or a rescue option via fire brigade equipment is necessary. This poses a significant problem, especially for taller buildings in densely built-up city centres (e.g. due to narrow streets or trees).

Thus, the turntable ladder of the fire brigade often cannot be used. As a result, a safety stairwell or a second (external) escape stairwell is necessary.

The latter often presents building owners with an unsolvable problem. For example, the location of the building often does not allow for a second stairwell in accordance with fire protection requirements. Consequently, the expansion of existing buildings is slowed down.

The low-pressure water mist extinguishing system from CWS as an alternative to the second escape and rescue route can be easily and economically installed in a building. For this purpose, a water mist nozzle is installed on both sides in front of each flat entrance door.

The nozzles have thermal triggering elements that trigger automatically when a specific rated value is reached. In addition, the water is stored in modular extinguishing agent bottles with nitrogen as the propellant. Consequently, the self-sufficient extinguishing system does not require a conventional pump and separate power supply. The safety power supply is provided by a rechargeable battery. The low-pressure water mist extinguishing system is able to prevent a flat fire from spreading to the adjacent stairwell for at least 10 minutes. In this way, our system sustainably improves fire protection in the stairwell and the entire building.