6. NFPA 2001
Standard for Clean Agent Fire Extinguishing Systems
Standard contains MINIMUM requirements for total flooding
clean agent systems, NOT local application.
Halocarbon Agents:
-HFC-125 (DuPont FE-25 / Fike ECARO-25)
-HFC-227ea ( FM-200 DuPont )
-HFC-23 (DuPont / Kidde FE-13)
-FK-5-12 (3M / Ansul Novec 1230) new agent in NFPA 2001
Inert Gas Agents:
-IG-55 (Chemetron Argonite & Fike ProInert)
-IG-541 (Ansul Inergen & Fike Proinert)
DOES NOT cover Carbon Dioxide or Water agents
11. Inert Gas Fire Extinguishing Method
• Are designed to reduce the ambient oxygen
concentration in a protected space to
between 10 - 14% by utilizing a
concentration of 38.5 - 42% by volume, a
level that is breathable but will not support
flaming combustion.
• Argon / Nitrogen / CO2 or a blend.
12. P/N: 06-384-INTRO
• Typical system design will result in a residual Oxygen
level between 10 and 15% after agent discharge
(based on system designed at 38.5%)
• Design Concentrations up to 43% will result in
Oxygen level of 12% (requires 5 minute egress)
• Design Concentrations between 43 and 52% will
result in Oxygen levels between 12 and 10% (requires
3 minute egress)
• Reference NFPA 2001
Approved for use in Occupied Spaces
We are often asked whether the chemical agent alternatives extinguish via the same methods as Halon 1301. This chart illustrates that the clean agents of today do extinguish via the same mechanisms as Halon 1301 but the extinguishing affects have different impacts. One of the key attributes of Halon 1301 was that it extinguished “primarily” via reaction interruption. This drove the extinguishing concentration for Halon 1301 well below the predicted levels if heat absorption was the sole method for extinguishment.
In the case of FE-25™, the primary method of extinguishment is via Heat Absorption vs. Reaction Interruption. This explains why the extinguishing concentration of FE-25™ and the other chemical agent alternatives is so much higher that Halon 1301. This is part of the reason why the systems cost more and require more agent consuming more space.