Reports

Report CoverSpacecraft Maximum Allowable Concentrations for Selected Airborne Contaminants, Volume 5 (2008)


The National Aeronautics and Space Administration (NASA) maintains an active interest in the environmental conditions associated with living and working in spacecraft and identifying hazards that might adversely affect the health and well-being of crew members. Exposure to contaminants in air on prolonged space missions is one concern. Despite major engineering advances in controlling the atmosphere within spacecraft, some contamination of the air appears inevitable. As part of its efforts to promote safe conditions, NASA asked National Research Council to develop guidelines for establishing spacecraft maximum allowable concentrations (SMACs) for contaminants and to review NASA's recommended exposure limits to determine they are consistent with those guidelines. This report, Volume 5 in a series, reviews the spacecraft maximum allowable concentrations for acrolein, C3 - C8 aliphatic saturated aldehydes, C2 - C9 alkanes, ammonia, benzene, carbon dioxide, carbon monoxide, 1,2-dichloroethane, dimethylhydrazine, ethanol, formaldehyde, limonene, methanol, methylene chloride, n-butanol, propylene glycol, toluene, trimethylsilanol, and xylenes.
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