Special hazard fire protection systems are used in buildings and areas where the more traditional fire protection systems will not be adequate. Normal sprinkler systems will work in normal buildings, but under more rare conditions, fires will not extinguish by dousing them with water. Beyond this, certain facilities contain objects all too valuable to be doused with water, even in the case of a fire emergency. What is worse is that some of these rare facilities in which one should not install water based sprinklers are themselves under a high risk of fire – that is, some of these areas and facilities are not only high value, but also high risk. Therefore, in cases where buildings or areas may potentially catch fire in such a way that normal water will not extinguish it, or indeed in situations which, though high risk to catch fire, are nevertheless too expensive to douse with water, what is needed is a so-called special hazard fire protection system. In this post we will take a look at the five main models within this system.
High Velocity & Volume
Deluge fire sprinkler systems are typically used within high hazard areas, including power plants and chemical storage units. In these facilities, high volume and high velocity water suppression is required, and deluge sprinkler systems provide just that. Deluge systems are connected directly to water supplies, and the water is released into the piping through a deluge valve when fire or heat its detected. The water is spread in high volume over the entire hazard, and is thus ideal for a fast and effective suppression in these high hazard facilities.
High expansion foam systems are used in aircraft hangers and storage units with high combustion. In this system, foam concentrate is mixed with water, creating a foam solution intended to extinguish fires. A motorized high expansion foam generator discharges this solution through a nozzle and out through a steel screen. A motorized rotating fan then blows large amounts of this solution through the air. The result is a large discharge of stable bubbles that are able to quickly fill large areas and extinguish fires.
CO2 Fire Systems
CO2 fire systems are often used where electronic operations or power generation is present. CO2 is a non-conductive gas that works well as a fire extinguisher. The CO2 fire system uses cutting-edge control panels which sense a fire in its initial phases. Carbon dioxide gas is then applied to the fire or potential fire area, thereby extinguishing it. For, CO2 provides a blanket of gas that reduces oxygen levels so that fire can no longer occur. The major upside of this method is that there is no type of liquid damage to the property when it is used.
Clean agent fire systems are great for facilities with delicate equipment on the premises. This system does not leave any residue on equipment once it evaporates, and thus is ideal for facilities with expensive equipment that you want to keep safe. Clean agents are electrically non-conductive and non-corrosive, and there will thus be no damage to equipment in the facility. They evaporate on their own, leaving no residue, and thus require no cleanup.
Water mist fire systems are often used in museums as well as industrial plants. This system uses fine water spray or small water drops in such a way that this mist controls, suppresses or extinguishes fire. Within this system, the droplet size, flux density and spray dynamics can all be adjusted in order to customize your system to your particular facility. This system, while using the traditional method of a water-based extinguisher, minimizes water damage since only mist is used in a very controlled manner.
For more information about fire protection system design, contact Balanced Comfort today!