dethemedetheme
deluge sprinkler system fire protection tubes

By Becca

Deluge vs. Pre Action Sprinkler Systems

April Showers Bring May Flowers- and also Building Protection

As they say, April showers bring May flowers, we just hope those showers stay on the outside of your building. However, if you happen to need your indoor showers (sprinkler systems and fire suppression systems) it’s best to understand what systems serve your specific building’s needs. Deluge vs. Pre Action Sprinkler Systems—what’s the difference? —–When it comes to fire protection for your building there are many options to consider, and it’s important to understand what these options may entail. 

Deluge Systems 

What is a Deluge system?

Deluge suppression systems are typically used in special hazard installations when water must be applied to an entire area for fire protection. These systems are considered a ‘dry fire protection system’ as the piping for the system is empty and at an atmospheric pressure with the sprinkler heads all open. When heat or fire is detected by the system, the deluge valve releases the water, dry chemicals, inert gases, or foam. 

The type of agent used in the systems is dependent on the hazard type and location of the fire protection system. Once filled, it releases from all sprinkler heads simultaneously, which helps to blanket the entire area, which, in turn, controls the fire. 

These systems are typically used for facilities where an entire area needs to be protected immediately, rather than by a zone or specific location of the source of the heat or fire. Typical facilities that utilize deluge suppression systems are airport hangars, chemical plants, processing plants, and data storage centers. These systems are especially useful when you need to quickly flood an area to prevent a fire from expanding. 

What are the types of deluge systems?

There are a few different types of deluge systems. These systems can be electronically operated, others are pneumatic. The electronically operated systems work when an alarm is set off via a detector, pull station, or another alarm system. Once the alarm is activated, it will energize the solenoid valve, which releases the prime water, or other agents, off the top of the valve, which allows the deluge valve to trip and deliver the agent to the hazard. 

Pre-Action Sprinkler Systems

What is a pre-action sprinkler system?

Pre-action sprinkler systems, on the other hand, are used to protect areas where water damage from damaged sprinklers or piping needs to be avoided. These are a middle ground between dry and wet fire protection systems. 

The major difference between a deluge suppression system and a pre-action system is that pre-action systems are filled with compressed air. The sprinkler heads remain closed until needed, and a pre-action valve holds back the water. It is a hybrid dry/wet system as it is a dry system until it is activated at which point it becomes a wet system. 

Pre-action fire sprinkler systems require two steps to discharge the agent. When the system first detects heat or fire the pre-action valve opens. Next, the pipes are flooded with water, dry chemicals, inert gases, or foam. After it’s filled, the specific sprinkler head must detect heat or fire to open. Then, the system will work to extinguish the fire in the immediate area.

Unlike deluge systems, these systems only cover an area that detects heat or fire. Coverage expands as more sprinkler heads detect heat/fire.

Why would you choose a pre-action sprinkler system?

One of the best reasons to incorporate pre-action sprinkler systems into your building is because sprinkler heads may be falsely triggered. When these sprinkler heads accidentally activate, there may sometimes be costly, irreversible property and water damage to your building. Because pre-action fire sprinkler systems require two-part discharge, they provide an elevated level of protection from accidental discharges. 

Another reason to utilize pre-action fire sprinkler systems is the ability of the pressurized air or nitrogen to detect leaks in the system. This allows you to ensure your system is functioning properly when you need it most. 

What other sprinkler systems should I consider?

There are a few other fire sprinkler systems to consider as you work to ensure your building remains protected. 

Wet Pipe Sprinkler Systems

These systems are the most popular sprinkler systems. They are extremely effective, low-cost, and low-maintenance. This system’s pipes remain filled with water. Once triggered by the heat-source, water flows through the activated sprinkler to the source of the fire. These systems are extremely quick to react to potential fires, however they are at risk of freezing in cold environments. 

Dry Pipe Sprinkler Systems

In freezing climates, dry pipe sprinkler systems are a better choice than wet pipe systems. These systems do not carry water in the piping until they are activated. 

Instead, these pipes are filled with pressurized air and nitrogen. When the system is activated, the dry pipe valve opens and water flows in when the sprinkler head is triggered. 

The disadvantage of these systems is that their response time is delayed. Another potential downfall to these systems is the required maintenance. Sprinkler corrosion is more prevalent in these systems, as the compressed air and oxygen create an enticing environment for corrosion. 

Single Interlock

These systems require a single, preceding fire detection event. This event is typically an activation of heat or smoke detectors. When the event occurs, the pre-action valve allows water to enter the piping system. With these systems, if a sprinkler head activates before this, it will sound a trouble alarm. However, no water will be discharged. 

Double Interlock

Double interlock pre-action systems provide an added layer of protection. These systems require a preceding fire detection to occur in conjunction with an automatic sprinkler activation, prior to water releasing into the pipes. One alarm activation will not be enough to discharge these sprinkler systems. 

At VFS Fire & Security Services we understand that your unique building needs unique fire protection systems. Our team is equipped to ensure you receive the fire protection you need to keep your building and your people safe from harm.

 

sprinkler systems

By Jackie Berens

How Sprinkler Systems Can Save Your Building

Sprinkler systems don’t just protect your building from potential fires but from alien invasions too!

As we come to the end of 2020, I think we all agree, it’s best to be prepared for anything. We’ve seen quite a few once-in-a-lifetime events in the last few months, proving that anything can really happen. We’ve seen footage of UFOs, a Firenado, simultaneous hurricanes, and, oh yes a global pandemic this year, so how outrageous could an alien invasion be?

As we’ve seen in Aliens 3, the best way to defeat aliens is by using your building’s sprinkler system. Aside from protecting you from an alien invasion, why do commercial buildings require sprinkler systems?

The reason you need a fire sprinkler system

Fire sprinkler systems assist all your fire safety protocols in fighting potential fires and protecting your building’s assets, people, and contents. These systems are an active measure to protect against fires and prevent lives and property damage. They help to limit the fire’s spread and give firefighters ample time to save your building.

Fire sprinklers detect heat from a fire source and trigger the sprinkler head to release water in specific locations. Their purpose is to extinguish the fire or slow it down before the firefighters arrive.

How do I know if a fire sprinkler system is required for my building?

Most commercial buildings require a sprinkler system to be installed, especially in new construction, remodels, and renovations. There are a few sprinkler systems requirements in commercial buildings, the International Building code states the following: 

1. Sprinkler systems allow builders to increase the footprint of the building. 

Adding sprinkler systems throughout your building allows for a larger building footprint and a higher building height. At VFS, our teams help to plan and budget for new construction sites and assist your team from the planning stages all the way through to completion. Our in-house Design/Build departments produce the highest quality and most accurate results to ensure the safety of your building.

2. Different occupancies and uses require specific systems.

Certain commercial buildings use group or occupancy-use to determine how the sprinkler systems will be implemented throughout the building. All residential buildings require occupancy load determinants, while other commercial buildings typically use fire areas to determine sprinkler systems management.

3. Special hazards require sprinkler systems. 

Special hazards environments require the most reliable and advanced fire suppression systems on the market. At VFS we provide not only the systems but the specialized knowledge and certified and trained technicians who install, service, and inspect special hazards fire protection systems. These systems include deluge, foam-based, water mist, dry chemical, and clean agent systems, including FM-200 and carbon dioxide. Special hazard safety begins with the professional integration of the specific fire protection systems required within the environment.

At VFS Fire & Security Services we don’t stop at the basics, we apply our full-book of expertise to the systems that need them and follow the specific requirements depending on the particular authority having jurisdiction. Every environment is unique and has its own set of specific requirements and the experts at VFS will help get your business up to code every step of the way.

You need to prepare for whatever comes your way– including alien invasions! At VFS, we offer preventative and inspection maintenance to ensure your systems are running effectively and efficiently. Your business needs to be kept safe, we understand what it takes to make that happen. 

deluge sprinkler system fire protection tubes
Deluge vs. Pre Action Sprinkler Systems
sprinkler systems
How Sprinkler Systems Can Save Your Building