Single Interlock Preaction Systems |
| Single interlock preaction systems are used to protect areas where there is dangers of serious water damage that might result from damaged automatic sprinklers or piping. Typically such areas include computer rooms, storage areas for valuable artifacts, libraries and archives. Also, preaction systems are effectively used to protect properties where a prealarm of a possible fire condition may allow time for fire extinguishment by alternate suppression means, prior to sprinkler discharge. In the event the fire cannot otherwise be extinguisheds, the preaction sprinkler system will then perform as the primary fire protection system. Single interlock preaction systems employ automatic sprinklers attached to a piping system containing 10 psi (0,7 bar) supervisory pressure, with a supplemental electric fire detection system installed in the same area as the sprinklers. Preaction systems with 10 psi (0, 7 bar) supervisory pressure may also be activated by either wet or dry pilot sprinklers instead of electric detectors. Actuation of the fire detection system from a fire opens the deluge valve, allowing water to flow into the sprinkler piping system and to be discharged only from those sprinklers that have been operated by heat over the fire. Loss of supervisory pressure from the system piping as a result of demaged sprinklers or broken piping will activate a trouble alarm to indicate impairment of the system. The deluge system valve will not open due to loss of supervisory pressure. For more information about fire systems and solutions please use our Fire Systems Enquiries form to have a Wormald representative contact you. Electric Shown |
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