STP1133

    Thermal Constraints Related to the Wearing of Protective Clothing. Body Ventilation by Fresh Air

    Published: Jan 1992


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    Abstract

    In order to protect people in a contaminated environment, protective clothing is required. To facilitate heat release, an air-ventilated jacket has been developed and tested in three experiments. - The first one was carried out in the laboratory on four subjects wearing Nuclear, Bacteriological and Chemical clothing who were to perform light work for 8 hours (Tair: 45°C). The tolerance time was 32 minutes without ventilation, and more than 8 hours with body ventilation (200 L/min at 23°C). - The second one was carried out in the laboratory on 3 subjects wearing a “vinyl taped” suit that was completely impermeable to water vapor. The subjects walked on a treadmill, corresponding to 35 % of their VO2max in a 35°C environment (30 % humidity). The tolerance time was 0 hours 29 minutes without ventilation, and 2 hours 01 minutes with body ventilation (200 L/min at 23°C). - The third one was carried out on 4 decontaminators wearing “vinyl taped” suits for work in a nuclear environment (air: 30°C, humidity: 50 %). The tolerance time was 39 minutes without ventilation, and 1 hour 38 minutes with body ventilation (200 L/min at 28°C). In conclusion: Body ventilation is an effective means for working in a hot environment for subjects wearing protective clothing.

    Keywords:

    Thermoregulation, Heat, Protective clothing, Body air ventilation hyperthermia, Dehydration


    Author Information:

    Bittel, J
    Centre de Recherches du Service de Santé des Armées - Unité de Thermophysiologie, LA TRONCHE,

    Hanniquet, A-M
    Centre de Recherches du Service de Santé des Armées - Unité de Thermophysiologie, LA TRONCHE,

    Frossard, H
    COGEMA - MAROULE, BAGNOLS,


    Paper ID: STP19189S

    Committee/Subcommittee: F23.96

    DOI: 10.1520/STP19189S


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