They will work with you to make sure that the type of system you need to install will meet the building codes set by the NFPA, your insurance company, and or the Authority Having Jurisdiction AHJ for your area. Choosing a Deluge or Pre-Action System to Protect Your Facility There are several types of fire protection systems available when it comes to protecting your home, business, and or assets. What is a Deluge System? Protecting High Hazard Areas with Deluge Systems Deluge systems are generally used when an entire area needs to be protected immediately instead of by zone or location of source of heat or fire.
What is a Pre-Action System? For a pre-action system to discharge, two steps must occur: When the system detects heat and or fire, the pre-action valve opens, and the pipes are flooded with water, dry chemicals, inert gases, or foam.
A specific sprinkler head detects heat or fire, that sprinkler head will open and the system will work to extinguish the fire in that immediate area. As more sprinkler heads become activated, the systems coverage will expand.
Pre-Action Systems for Water Sensitive Areas Pre-action systems are also used when accidental discharge of extinguishant could be detrimental. Talk to a Fire Protection Expert These types of systems are used in cold weather applications where water could freeze in the pipes and the system would be damaged.
Deluge systems may be activated by wet or dry pilot sprinklers, or electric detectors. When the deluge valve opens, water flows into the piping system and discharges from all open sprinklers and nozzles. Single interlock preaction systems are used to protect areas where there is danger 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 a sprinkler discharge.
In the event the fire cannot otherwise be extinguished, 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 damaged sprinklers or broken piping will activate a trouble alarm to indicate impairment of the system. The deluge valve will not open due to loss of supervisory pressure. Double interlock preaction systems are designed for applications such as refrigerated areas that require the maximum degree of protection against an inadvertent operation that could result in unnecessary flooding of the sprinkler system piping.
Since there is no heat exposure aspect in a deluge sprinkler system, the valve must be physically tripped. The valve release can be electrically, pneumatically, or hydraulically operated. These systems are used to combat and contain quick spreading fires in dangerous situations.
For example, almost all major aircraft hangers use deluge sprinkler systems to prevent a fire from quickly overtaking any planes, equipment, and fuel. If the delivery system required heat to activate, there would be an increased chance of quick spreading flames. Power plants, chemical storage facilities, and processing facilities also usually employ deluge sprinkler systems. BMF Solutions is here to install a deluge sprinkler system in your business today!
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