Fire Sprinklers system & Its Types

What are the sprinklers in fire safety?

Fire Sprinklers are the fire controller devices or systems in fire safety systems. Selected areas of the fire source are doused with extinguishing water. The fire is kept from spreading by water that is also sprayed on the vicinity.

Types of Fire Sprinklers system.

There are three types of Fire Sprinkler Systems.
1. Wet Fire Sprinkler System. 
2. Dry Fire Sprinkler System. 
3. Preaction Fire Sprinkler System.

Let’s Have look on these types of sprinklers systems one by one.

  1. Wet Fire Sprinkler System. 

One of the most popular solutions on the market is a wet fire sprinkler system. There is water in the line at all times with a wet fire sprinkler system. 

The heat from a fire causes a sprinkler head’s core to rupture. This causes the afflicted sprinkler head to release water. Only the sprinkler heads that are directly in contact with the flames in a wet fire sprinkler system are triggered at once.

This helps to limit any damage to the regions of a structure where a fire hazard is present, minimising damage in the event of a false alert. The very straightforward actuation of a wet fire sprinkler system is what makes it one of the most widely used products on the market right now.

2. Dry Fire Sprinkler System. 

Instead of using water, a dry fire sprinkler system uses pressured air. Only when the sprinkler heads are actuated do these sprinklers deliver water to the pipes. 

Even though it lengthens the time it takes to put out a fire, this feature is essential for unheated structures such northern warehouses, outdoor parking lots, and other locations where pipes are at risk of freezing in cold weather.

These fire sprinkler systems do frequently come with a quick-opening tool that speeds up the discharge of pressurised air and increases water flow. In situations where the risk of a fire threat outweighs the consequences of frozen and burst pipes, dry fire sprinkler systems are employed.

3. Preaction Fire Sprinkler System.

Preaction fire sprinkler systems safeguard expensive items in structures like museums and libraries by combining the flexibility of a wet system with the intricacy of a dry system. 

Preaction fire sprinkler systems are inflated with air, just as a dry system. Preaction systems, in contrast to dry systems, are triggered by an earlier fire detection event, such as the activation of a smoke or heat detector. 

In the event of a mechanical failure or false alarm, the additional detecting stage reduces the damage caused by water spouting.

There are two main types of preaction fire sprinkler systems:

One-way Interlock

Except for the earlier fire detection event, single interlock preaction systems operate similarly to dry fire sprinkler systems. Single interlock systems react slightly more quickly when a smoke detector or fire alarm is activated than dry systems, which only operate when heat or fire is detected. 

The time delay caused by dry fire sprinkler systems is reduced as a result.

Two-way Interlock

Similar to single interlock systems, double interlock preaction systems demand a prior fire detection event. They differ from others since they additionally call for the use of an automatic sprinkler system. 

Prior to the double interlock preaction fire sprinkler system releasing water into the system, both systems—the sprinklers and the smoke detector—must be turned on.

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