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What is fine atomization fire extinguishing system? It is a facility to extinguish fire with fine water particles by spinning a small amount of water at high pressure. According to NFPA 750, the first is the International Maritime Organization's (IMO) efforts to improve the fire extinguishing system for commercial ships, primarily aimed at replacing sprinkler systems. The second is an environmentally friendly fire extinguishing system due to the phased withdrawal of halon fire extinguishing facilities under the Montreal Protocol. It is used for engine room and cabin in ships, and for computer room, engine room and kitchen on land. Currently, the scope of application is gradually increasing in the chemical and semiconductor fields.
Standard
NFPA 750 | Define the size of the droplet (Dv0.99 = SMD) of 1,000 µm or less at the nozzle minimum design operating pressure |
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NFSC 104A | Cumulative volume distribution of 99% of the water particles released from the head at the nozzle minimum design operating pressure is sprayed to 400㎛ or less and is adaptable to A, B, C grades |
Comparison of droplet diameter and surface area
Extinguishing system | Average droplet diameter | Reaction surface |
---|---|---|
[mm] | [m²/l water] | |
Sprinkler | >1 | <2 |
Spray system | 0.1 | 20 |
Water Mist system | 0.01 | 200 |
Fire extinguishing mechanism
Characteristic
Purpose | Protection of life and property in space from fire hazard |
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Fire Propagation Prevention | Fire temperature control in the fire room for transition to Flashover and prevention of fire propagation to neighboring spaces |
Apply fire | Applicable to oil and electric fire |
Secondary damage | Since the extinguishing agent is 100% pure water, there is almost no secondary damage caused by the extinguishing agent. No environmental problems |
Initial suppression | Excellent for extinguishing initial fires as it can be sprayed immediately after detecting a fire |
Operating sequence when configuring the system
① Water tank water supply
Automatic water supply through flow sensor
② High pressure pump
Compresses water in the water tank and delivers it to the manifold. Transfers water to the discharge line. Operation test through test valve.
③ Fire hydrant
Fire detector triggers emission when the system is running and extinguishes fire with a spray nozzle or spray gun
Application of Water Mist
High voltage transformer, underground utility conduit, engine room, machine room, storage for dangerous substances and semiconductor facility room, etc.
NKTECH Water Mist
Name | NKFS-Water Mist System |
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Approval Status | Local Water Mist System : IMO MSC. Circ. 913 KR 승인 |
Total Water Mist System : IMO MSC. Circ. 1165 & 1269 KR 승인 |
KFI Certification