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Development and testing of Goodrich 255 fire suppressant
Goodrich has developed an active non-ozone depleting replacement for Halon. It is intended primarily for critical applications such as aircraft cargo holds, maritime engine and equipment rooms, etc, as a total flooding agent. Fire suppression tests have been performed in full-scale test devices rather than using laboratory tests. The surprising results show that the weight of the new suppressant needed is 7% of that of Halon 1301 in the identical tests. The stored volume of the suppressant is approximately 3% of that required for Halon 1301. For fire suppression lasting longer than 30 minutes, 2-1/2 pounds of suppressant agent for each 1000 cubic feet of enclosure is recommended. Goodrich 244 is a solid propellant using potassium bromate as the principal oxidizer. Approximately 47% of the effluent is potassium bromide, the active fire suppressant. The gaseous products are water, carbon dioxide and nitrogen. The bromine atom is in a solid state both before and after use. Therefore, the Ozone Depletion Potential is zero. The only global warming agent in the effluent is carbon dioxide, which constitutes 24% of the effluent. Therefore, the global warming potential is 0.2. The Acute Inhalation Test ("rat test") showed no gross abnormalities after a 4 hour exposure followed by 2 weeks observation and necropsy, the SNAP approval is for limited times in inhabited spaces. The fire suppressant data were obtained by testing in a chamber, which is a surrogate of a cargo bay in the DC-10 aircraft. It is agreement with the design published by the FAA. Instrumentation includes 45 thermocouples, FTIR analyses, oxygen concentration meter, and aerosol chemical concentration equipment, visible and IR videos and two pressure transducers.
Development and testing of Goodrich 255 fire suppressant
Goodrich has developed an active non-ozone depleting replacement for Halon. It is intended primarily for critical applications such as aircraft cargo holds, maritime engine and equipment rooms, etc, as a total flooding agent. Fire suppression tests have been performed in full-scale test devices rather than using laboratory tests. The surprising results show that the weight of the new suppressant needed is 7% of that of Halon 1301 in the identical tests. The stored volume of the suppressant is approximately 3% of that required for Halon 1301. For fire suppression lasting longer than 30 minutes, 2-1/2 pounds of suppressant agent for each 1000 cubic feet of enclosure is recommended. Goodrich 244 is a solid propellant using potassium bromate as the principal oxidizer. Approximately 47% of the effluent is potassium bromide, the active fire suppressant. The gaseous products are water, carbon dioxide and nitrogen. The bromine atom is in a solid state both before and after use. Therefore, the Ozone Depletion Potential is zero. The only global warming agent in the effluent is carbon dioxide, which constitutes 24% of the effluent. Therefore, the global warming potential is 0.2. The Acute Inhalation Test ("rat test") showed no gross abnormalities after a 4 hour exposure followed by 2 weeks observation and necropsy, the SNAP approval is for limited times in inhabited spaces. The fire suppressant data were obtained by testing in a chamber, which is a surrogate of a cargo bay in the DC-10 aircraft. It is agreement with the design published by the FAA. Instrumentation includes 45 thermocouples, FTIR analyses, oxygen concentration meter, and aerosol chemical concentration equipment, visible and IR videos and two pressure transducers.
Development and testing of Goodrich 255 fire suppressant
Olander, D.E. (author) / McSpadden, H.J. (author)
2002
12 Seiten, 1 Bild, 2 Tabellen, 3 Quellen
Conference paper
English
Feuerlöscher , Brandbekämpfung , Flugzeug , Unterwasserfahrzeug , Wasserfahrzeug , Gerätesicherheit , Produktprüfung , Kaliumbromid , Abwasser , Gasanalyse , Umweltbelastung , Thermoelement , FT-IR-Spektroskopie , Sauerstoffmessgerät , Kohlendioxid , Wasser , Kaliumcarbonat , Treibstoff , Aerosolmessung
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