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    Spontaneous Ignition Temperature of Tracheal Tubes

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    Operating room fires continue to be reported in the medical literature. To simulate operating room conditions, a high pressure spontaneous ignition apparatus was redesigned to allow for the determination of spontaneous ignition temperature of trachea! tubes in 100% oxygen at atmospheric pressure. Pure oxygen flowed through a test chamber at 100 cm3/min, and a temperature ramp rate of 10°C/min was used. Sample temperature, chamber temperature, chamber pressure and elapsed time were stored on-line by computer. The experimental ignition temperature was observed as a spike in sample temperature-time plot.

    Five samples each of poly (vinyl chloride), red rubber and silicone rubber tracheal tubes were analyzed for spontaneous ignition temperature, which were determined to be 428°C, 371°C, 381°C, respectively.

    It was concluded that the small differences in spontaneous ignition temperature for the various tracheal tube materials has little clinical relevance to the tubes chosen for the particular surgical procedure.


    combustion, polyvinyl chloride, red rubber, silicon rubber, spontaneous ignition temperature, tracheal tube fires

    Author Information:

    Wolf, GL
    Professor of Clinical Anesthesiology, State University of New York, Health Science Center at Brooklyn, Brooklyn,

    McGuire, JG
    Consultant Safety Engineer, SRC Consultants, Ltd., Woolston, Cheshire

    Nolan, PF
    Professor, Department of Chemical Engineering, South Bank University,

    Sidebotham, GW
    Assistant Professor of Chemical Engineering, The Cooper Union for the Advancement of Science and Art, New YorkNew York,

    Committee/Subcommittee: G04.02

    DOI: 10.1520/STP24848S