||Description of the CLEANS human exposure system /
Strong, Arthur A.
||Health Effects Research Lab., Research Triangle Park, NC. Clinical Studies Div.
|| U.S. Environmental Protection Agency, Health Effects Research Laboratory,
||PB 290 175
Health risk assessment.
Test chambers ;
Environmental tests ;
Air pollution ;
Data acquisition ;
Gas analysis ;
Respiratory system ;
Cardiovascular system ;
Health risks ;
Maximum permissible exposure ;
Air pollution effects(Humans) ;
Environmental health ;
||Region 3 Library/Philadelphia, PA
||Region 4 Library/Atlanta,GA
||Research Triangle Park Library/RTP, NC
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||v, 32 p. : ill. ; 28 cm.
Legislative mandates require the Environmental Protection Agency to determine the levels of risk to the human population exposed to air pollutants and establish standards to limit that risk. Two stainless steel Controlled Environmental Laboratories (CEL) were constructed in the EPA Clinical Studies Laboratory Facilities in Chapel Hill, North Carolina to determine the pulmonary and cardiovascular health problems of humans exposed to ambient levels of selected air pollutants. Both gaseous and water soluble particulate pollutants can be generated in desired concentrations in accurately controlled air flows, temperatures, humidities, and light levels. Each CEL operates independently of the other, and the pollutants can be introduced either singly or in combinations. Four PDP-11/40 computers are required to automate all control, measurement, and data acquisition for the CEL environment and the physiological measurements of the test subjects. The exposure system was designed to house six test subjects for several weeks without interruption of the exposure insult. A brief description of the exposure laboratories and the support systems including their functions is provided. The methodology used to measure and control the conditions in each CEL is included along with a list of the physiological capabilities.
"EPA-600/-78-064". References: pp. 31.