Different system of fire suppression
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The document discusses different fire suppression systems and their principles based on the fire triangle of fuel, heat, and oxygen. It outlines various clean agent systems, including halocarbons and inert gas agents, detailing their extinguishing methods and performance characteristics. The NFPA 2001 standard is referenced, highlighting design guidelines for maintaining breathable oxygen levels while effectively suppressing fires.
Different system of fire suppression
- 1. Different System Of Fire Suppression and their Basic Principal to Over Come Fire
- 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
- 7. Agent Comparison Extinguishing Methods Halon FM-200 Ecaro-25 Novec-1230 Inert Gas Oxygen Depletion 0% 0% 0% 0% 100% Heat Absorption 15% 67% 67% 67% 0% Reaction Interruption 85% 33% 33% 33% 0%
- 8. Extinguishing Method Ecaro-25, FM-200 & Novec-1230 (Heat Absorption & Reaction interruption)
- 9. Fast & Efficient Performance Removes heat so fire can’t sustain itself
- 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
- 14. Extinguishing Method Inert Gases IG-541, IG-55 FM-200,Ecaro-25 & Novec-1230
Editor's Notes
- #8: 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.