FE-227 - Clean Agent Suppression Systems - Brochure

HFC-227EAAPPLICATION/DESCRIPTIONHFC-227ea provides superior fire protection in a wide range of applications fromsensitive electrical equipment to industrial applications using flammable liquids.HFC-227ea is ideal for applications where clean-up of other media presents aproblem, where weight versus suppression potential is a factor, where anelectrically non-conductive medium is needed and where people compatibility isan overriding factor. When environmental impact is a consideration, HFC-227eais particularly useful. It has zero ozone-depleting potential, low global warmingpotential and a short atmospheric lifetime. These characteristics make it suitablenot only for new installations using Fike’s total flooding systems, but also forHalon 1301 replacement applications.HFC-227ea is an odorless, colorless, liquefied compressed gas. (See PhysicalProperties Table for additional information). It is stored as a liquid and dispensedinto the hazard as a colorless, electrically non-conductive vapor that is clear anddoes not obscure vision. It leaves no residue and has acceptable toxicity for use inoccupied spaces at design concentration. HFC-227ea extinguishes a fire by acombination of chemical and physical mechanisms. HFC-227ea does not displaceoxygen and therefore is safe for use in occupied spaces without fear of oxygendeprivation.PerformanceHFC-227ea is an effective fire extinguishing agent that can be used on many typesof fires. It is effective for many surface fires, such as flammable liquids, and mostsolid combustible materials.On a weight-of-agent basis, HFC-227ea is a very effective gaseous extinguishingagent. The HFC-227ea extinguishing concentration for normal Class Acombustibles is 6.25 - 7% by volume. The minimum design concentration fortotal flood applications should be in accordance with NFPA 2001.SpecificationsHFC-227ea is manufactured to these specifications:• Mole%: 99.0 Minimum• Acidity, ppm by weight: 3.0 Maximum• Water content, % by weight: 0.001 Maximum• Non-volatile residues, gram/100mL: 0.05 Maximum ToxicityThe toxicology of HFC-227ea compares favorably with other suppression agents.The LC50 of HFC-227ea is greater than 800,000 ppm. HFC-227ea has beenevaluated for cardiac sensitization via test protocols approved by the UnitedStates Environmental Protection Agency. Test results show that cardiac toleranceto HFC-227ea is higher than that of other suppression agents and is acceptablefor safe use in occupied spaces. HFC-227ea will decompose to form halogenacids when exposed to open flames. The formation of these acids is minimizedby using Fike early warning detection systems and proper system installation.When properly applied and installed, the generation of these by-products ofHFC-227ea should be minimal.704 S. 10th Street · P.O. Box 610 · Blue Springs, Missouri 64013-0610 U.S.A. · (816) 229-3405 · (816) 229-4615 · www.fike.comAPPROVALSHFC-227ea complies with NFPAStandard 2001 - current edition. FikeHFC-227ea systems are UL listedand FM approved for Clean AgentFire Suppression Systems.• UL Listed Ex 4623• FM Approved 0Y4A8.AF• USCG 162.161/2/0Form No. C.1.07.01-2Copyright © Fike Corporation All Rights Reserved.Form No. C.1.07.01-2 March, 2005 Specifications are subject to change without notice.PHYSICAL PROPERTIES• Chemical Name: Heptafluoropropane (CF3CHFCF3)• Molecular Weight: 170.03• Boiling Point @ 760 mm Hg: 2.55oF (-16.4oC)• Freezing Point : -204oF (-131.1oC)• Critical Temperature: 215oF (101.7oC)• Critical Pressure (psia): 422 psia (2912 kPa)• Critical Volume (ft3/lbm) (cc/mole): 0.0258 (274)• Critical Density (lbm/ft3): 38.8 (621 kg/m3)• Specific Heat, Liquid (BTU/lb-Fo) @ 77oF (25oC): 0.283 (1.184 kj/kg/oC)• Specific Heat, Vapor (BTU/lb-oF) @ constant pressure of 1 ATM @ 77oF (25oC):0.1932 (0.808 kj/kg/oC)• Heat of Vaporization (BTU/lb) at Boiling Point: 57.0 (132.6 kj/kg)• Thermal Conductivity (BTU/h ftoF) of Liquid @ 77oF (25oC): 0.040 (0.069w/moC)• Viscosity, Liquid (lb/ft hr) @ 77oF (25oC): 0.443 (0.184 centipoise)• Vapor Pressure (psia) @ 77oF (25oC): 66.4 (457.7 kPa)• Ozone Depletion Potential: 0• Estimated Atmospheric Lifetime (years): 31-42• LC50 (Rats; 4hrs - ppm): >800,000