Design specifications for respiratory breathing devices for firefighters.
Burgess WA; Sidor R; Peterson N; Lynch JJ; Buchanan P; Clougherty E
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHEW (NIOSH) Publication No. 76-121, 1975 Sep; :1-79
The desired protective factor for self-contained breathing apparatus used in the fire service is proposed at 100 based on a series of tests with a personal air sampler which revealed maximum air concentrations of carbon-monoxide (630080) of approximately 20,000 ppm during fire fighting episodes. A series of 74 incidents were studied using a combustible gas detector modified to be specific for carbon-monoxide. The data are recorded on a cassette recorder using a voltage to frequency converter. A study of the respiratory minute volume during active work while wearing open-circuit, self-contained breathing apparatus indicated a median value of 60 liters per minute and 70 liters for the 80 percentile group. If the device is to have a service life of 30 minutes, the stored air capacity must be 1800 liters, and 2100 liters for the median and 80 percentile values respectively.
NIOSH-Contract; Contract-099-72-0021; Toxic-gases; Measurement-instrumentation; Air-contamination; Respiratory-protective-equipment; Firemen; Fire-fighting
NTIS Accession No.
DHEW (NIOSH) Publication No. 76-121; Contract-099-72-0021
National Institute for Occupational Safety and Health
Harvard School of Public Health