A gas-based suppression system is a type of fire extinguishing system that uses a gaseous extinguishing agent to extinguish fires through either oxygen displacement or physical effects. A gas extinguishing system, as opposed to a sprinkler system, is intended to extinguish rather than suppress fire.
When water, foam, or powder extinguishing systems are ineffective, or if extinguishing with the aforementioned extinguishing agents could cause significant damage, gas extinguishing systems are used. Typical applications include all types of electrical switch rooms, as well as IT and server rooms.
1- Co2 Fire Suppression System
2- Clean Agent Fire Suppression System
2.1- Inert gas fire suppression Systems
2.2- Halocarbon fire suppression Systems
There are two methods for applying an extinguishing agent:
1- Total flooding
2- Local application
Systems working on a total flooding principle apply an extinguishing agent to a three dimensional enclosed space in order to achieve a concentration of the agent (volume percent of the agent in air) adequate to extinguish the fire. These types of systems may be operated automatically by detection and related controls or manually by the operation of a system actuator.
Systems working on a local application principle apply an extinguishing agent directly onto a fire (usually a two dimensional area), or into the three dimensional region immediately surrounding the substance or object on fire. The main difference in local application from total flooding design is the absence of physical barriers enclosing the fire space.
Is a colorless, odorless, clean, dry, electrically non- conducting, non-corrosive, non-damaging and non-deteriorating inert gas that is approximately 50 percent heavier than air.
CO2 fire protection systems can quickly suppress a fire before it can cause damage to Facilities. Carbon dioxide gas has a high rate of expansion, which allows a fire protection system to work fast.
When applied to a fire, CO2 provides a heavy blanket of gas that reduces the oxygen level to a point where combustion cannot occur. Since carbon dioxide is a gas, there is no clean-up associated with this fire suppression system discharge.
CO2 fire suppression system is extremely versatile, effective on a wide range of flammable and combustible materials and approved for Class A, B, and C Hazards According to most famous Codes & Standards.
CO2 fire protection systems are available for use in total flooding or local fire protection applications making it an effective fire protection system for a wide variety of hazards.
These Systems Categorized in Different Ways:
1-Storage Pressure:
– 200 Bar
– 300 Bar
2-Type of Gas:
– Extinguishing Agent 100% Argon (IG-01)
– Extinguishing Agent 100% Nitrogen (IG-100)
– Extinguishing Agent 50% Argon +50% Nitrogen (IG-55)
– Extinguishing Agent 52% Nitrogen + 40% Argon + 8% Co2 (IG-541)
Halocarbon systems are recognized by NFPA as clean agents to suppress all A, B, C classes of fires especially in normally occupied protected spaces such as control rooms, museum, libraries and etc. Nowadays, because of many advantages such low pressure and no Barotraumas danger, no suffocating dangers, these systems going to be first choice of clients to protect the areas by a gaseous system.
1- Low initial cost than other gaseous systems
2- Smallest required space to install hardware than other gaseous systems
3- Fastest discharge & Extinguishing time (10 ~ 30 seconds)
4- No adverse effect on environment
5- Design flexibility due to various size of cylinder (5 ~ 240 liters) and two ranges of system pressure (25 & 42 bar)
6- Protection of either normally occupied or non-occupied spaces
7- Retrofitting of HALON with minimum change in existed distribution piping network
8- Completely certified systems by famous Notified bodies such as UL® and EPA
9- Possibility of local recharging of discharged cylinders
10- Lowest maintenance costs because of low Number of hardware components
11- No need to special devices such as excessive pressure relief damper for protected room
12- Safe agent regarding any suffocation or barotraumas
