Sprinkler System Types And How They Operate DEPARTMENTS Industrial Fire Safety There are many types of automatic sprinkler systems and methods of operation, such as wet, dry, deluge, pre-action, outside, recycling and packaged systems, plus others that will be outlined later. Each system has characteristics that make it more desirable than others for providing adequate fire protection in a specific application. Therefore, before any system is installed, the purchaser should obtain recommendations for the installation of a system evaluated in terms of the hazards to be protected. These recommendations should be made by a qualified source, whether it be the authority having jurisdiction over the property or a fire protection engineer. Wet-pipe systems are probably the ones most often installed. From the underground supply pipe to the most distant branch line, this system contains water under pressure. When a fire occurs, the heat fuses one or more sprinkler heads and…
