What is design concentration for FM200?
7%
The FM 200 supplier’s authorized agent normally recommends 7% as the design concentration, based on their experience with the type of fire anticipated in the areas protected. Increase of the agent concentration from 7% to 7.44% has the repercussion on the cost of the agent.
What is the percentage volume of FM 200 required to extinguish a Class A fire?
For normal Class A fire risks, only 7% by volume FM-200 is needed for extinguishing purposes, resulting in far less space being taken up than with many other gaseous extinguishing systems on the market. Its short atmospheric life has made FM-200 an acceptable option with many environmentalists.
What is minimum design concentration?
Previously, the minimum design concentration was simply the minimum extinguishing concentration (MEC) multiplied by a safety factor of 1.2. A unique test standard is used to determine the concentration for extinguishing Class A (ordinary combustibles) fires.
What is FM 200 in fire fighting?
FM-200™ is a colorless, compressed liquefied gas used to extinguish fires and is a popular replacement for Halon fire suppression systems. FM-200™ fire suppression systems are pressurized with nitrogen, waterless, and upon activation, FM-200™ discharges as a gas to suppress the fire.
How do you calculate FM-200?
- Room volume = 1200 ft3.
- Pressure = 14.7 psia.
- FM-200 concentration = C = 7 vol%
- Cylinder fill density = 70 Ib/ft3.
- Cylinder volume = 0.585 ft3 = 0.0165 m3.
- Pipe: 20 ft 3/4″ Sch.
- Total system volume after discharge = 1200 66 ft3 = 34 00 m3.
- The agent quantity is calculated as W = (V/S) C/( 100-C) = 10.9 Ib = I09 3 mol.
Does FM200 expire?
The atmospheric lifetime of FM-200 has been determined to be 36.5 years. The EPA does not consider FM-200 to be a long-lived substance when discharged, and as such, has placed no restrictions on its use.
How do you calculate FM200?
Why FM200 is banned?
Why is Halon banned? Halon, which was once one of the most effective and popular agents for suppressing fires, was banned because it is an ozone-depleting chemical. Since the ban on Halon 1211 and 1301, FM-200™ has become a leading clean agent commonly used in gaseous fire suppression systems for the last 20+ years.
Does fm200 expire?
What is a clean agent room?
The clean agent systems are three dimensional as well. Most systems can reach extinguishing concentration levels in just 10 seconds or less. Clean agents are designed to suppress the fire while it’s still in its incipient stage, meaning it will suppress the fire before it grows and enters into the heat/flame stage.
What should the design concentration be for FM 200?
To satisfy both FM and UL, it seems prudent to consider the design concentration as 7.44% by volume. The FM 200 supplier’s authorized agent normally recommends 7% as the design concentration, based on their experience with the type of fire anticipated in the areas protected.
How is FM 200 used in fire suppression systems?
FM 200 is a halocarbon agent accepted as an alternative to halon for total flooding fire suppression systems. After receiving the fire signal, FM 200 is discharged totally from the cylinders within 10 seconds to fill up the space uniformly at the design concentration to extinguish the fire.
What are the general requirements for the FM-200 clean agent system?
GENERAL REQUIREMENTS The FM-200 Clean Agent System materials and equipment shall be standardproducts of the supplier’s latest design and suitable to perform the functionsintended. When one or more pieces of equipment must perform the samefunction(s), they shall be duplicates produced by one manufacturer.
How long does it take for FM 200 to discharge?
After receiving the fire signal, FM 200 is discharged totally from the cylinders within 10 seconds to fill up the space uniformly at the design concentration to extinguish the fire. The agent is retained at its design concentration in the space for a period-called ‘Hold Time’-to extinguish the fire.