Positive Pressure Closed Circuit Breathing Apparatus and the Energy Cost of Fire Fighting.
NIOSH 1981 Sep:37 pages
The relationship between the physiologic work tolerance level of male fire fighters and the energy demands of their job was investigated to serve as a basis for the establishment of criteria for positive pressure closed circuit breathing apparatus. External factors suspected of influencing this relationship, such as heat, anxiety and three attributes of positive pressure closed circuit breathing apparatus (increased oxygen content, breathing resistance and equipment weight) were included in the analysis. Evidence suggested that compared to open circuit self contained breathing apparatus, the lighter weight, increased duration, and increased oxygen content of closed circuit breathing apparatus are important attributes when the physiological demands of fire fighting are considered. Positive pressure should be present at, and device duration based on a minute volume of approximately 120 liters/minute. The author concludes that NIOSH should proceed with the creation of criteria for positive pressure closed circuit breathing apparatus.
NIOSH-Author; Personal-protective-equipment; Respiratory-protection; Respirators; Firemen; Emergency-equipment; Physical-stress; Physical-exercise;
NTIS Accession No.
Control Technology and Personal Protective Equipment; Research Tools and Approaches; Respirator Research; Respirators;
Division of Safety Research, NIOSH, U.S. Department of Health and Human Services, Morgantown, West Virginia, 37 pages, 88 references