Spark extinguishing device
BS 7 GreCon

Spark extinguishing systems are in a position to detect even the smallest of sparks or hot particles in extraction ducts, drop chutes or mechanical conveyors, like for example screws or elevators, and to start countermeasures instantaneously. These can either be: activation of an exinguishing system, shutting off the way of transport or interrupting the production. All these measures are taken within a split second.
Detection of the ignition sources is made by means of spark sensors recognizing the infrared radiation of sparks and glowing particles. These sensitive spark sensors are even capable of detecting sparks through layers of dust or through the conveyed, dense material flow. They give alarm signals to the control console which processes the signals and releases automatically well-aimed countermeasures. Mostly an extinguishing device is triggered which is installed downstream from the spark detectors.

This device releases a water mist spray in the duct section into which the sparks are transported. Once no spark stream is detected, the extinguishment spray is automatically stopped. While the extinguishment takes place, the production process can be continued unless otherwise desired. Due to this special operation principle, spark extinguishing systems have to be classified differently than for example sprinkler systems, deluge systems, or even explosion suppression systems.
These fire protection measures are required for the protection of buildings and facilities which cannot be dropped even when a spark extinguishing system is installed.