Thursday, May 16, 2013

Fire Sprinkler - Deluge Fire Sprinkler System

A deluge fire sprinkler system works similar to a wet pipe system, however, the deluge system uses open fire sprinkler head or nozzles that do not operate individually.  The pipes are dry in normal operation and the water is held back by an electronic solenoid.  The solenoid is connected and control by a compatible releasing fire control panel.  An initiating device such as a smoke detector or heat detector sends a signal to the releasing panel which in turn energizes the releasing circuit and opens the solenoid.

These types of deluge systems are typically installed in high hazard areas such as power generating stations, aircraft hangers, chemical plants, and other areas that main contain chemicals and or flammable liquids.  Water is not always adequate to control fires in areas where chemicals and flammable liquids are stored.  Often you will find that a foam concentrate is mixed with the water in a part of the system known as the proportioner.  The foam is known as Aqueous Fire Fighting Foam or better known as AFFF.  This foam when mixed with water causes expansion when released through the sprinkler head which in turn deprives the fire of oxygen.

Read more about dry fire sprinkler systems here.

If you are interested in taking the NICET CBT exam for fire alarms, then we have you covered!  We are now selling our CBT Levels 1 - 3 practice exam DVDs.  These DVDs are packed with tons of NICET CBT practice exams along with all code references as to where to find the answers.  We have also supplied the DVDs with all of the necessary NICET applications, CBT calculator demonstrations, links and more.  If you need more information, feel free to send an email.  You can find the link to purchase our DVDs on the top left section of each page on this site.

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