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The financial consequences of an eventual production stop was a concern for the insurance company so they required the steelworks to improve fire protection and had suggested installation of a fixed fire extinguisher inside the filters.

The security and fire manager at, then Fundia, now Ovako steel smelter in Smedjebacken in central Sweden had to solve a problem with a fire hazard in textile filters. These filters clean the air from a Martin smelter. The main plant requires 3072 of these expensive filters and the building housing them is 6 stories high. In a worst-case scenario overheated particles could reach the filters and ignite them. If this would happen the only solution is to shut down operations and replace all damaged filters.

The financial consequences of an eventual production stop was a concern for the insurance company so they required the steelworks to improve fire protection and had suggested installation of a fixed fire extinguisher inside the filters. However, a study showed that installation of such a system would be both tedious and costly. Furthermore, a sprinkler system would require continuous maintenance, as dust particles would most likely clog the systems sensors.

The steelworks decided to evaluate the then new coldcut™ cobra firefighting system. A coldcut™ cobra could be applied from the outside of the filter building and the fine water mist in the water jet could perhaps put out any fires inside. The evaluation was positive and resulted in the delivery of a coldcut™ cobra system mounted in a fast response vehicle in June 2003.

In case a fire will occur in the filters staff will roughly locate the location of the fire by reading the outside temperature of the building wall with an IR camera. The coldcut™ cobra will then be applied from the outside until it is determined with the camera that the fire has been put out. A process that is measured in minutes once the coldcut™ has arrived on site. Any remaining holes are easily patched up.

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