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.


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    Title :

    Development and testing of Goodrich 255 fire suppressant


    Contributors:


    Publication date :

    2002


    Size :

    12 Seiten, 1 Bild, 2 Tabellen, 3 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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