Industrial Hygiene Report, Perchloroethylene, G. F. Thomas Cleaners, San Francisco, California.
NIOSH 1979 Apr:8 pages
Worker exposure to perchloroethylene (127184) (PCE) was determined at G. F. Thomas Cleaners (SIC-7216) in San Francisco, California on July 25, 1978. The firm was included in an industry wide mortality and industrial hygiene study of dry cleaning workers exposed to PCE. The work force included a dry cleaner and spotter, finishers, and counter help. First aid supplies and a gas mask were provided on the premises and an emergency room was located in a hospital two blocks away. Personal air and peak samples were collected. The 8 hour time weighted average (TWA) exposure of the dry cleaner was 149 parts per million (ppm) PCE. Exposures of other workers was 1 or 4ppm. Concentrations of three peak samples collected over 5 minute periods during garment transfer were 97, 85, and 174ppm, averaging 119ppm. PCE concentrations of two 15 minute peak samples collected during garment transfer were 775 and 58ppm. A 15 minute sample collected in the area behind the washer indicated a PCE concentration of 435ppm; another 15 minute sample collected during the cleaning of the muck cooker indicated an exposure of 348ppm. OSHA standards were 100ppm over an 8 hour TWA and an acceptable ceiling concentration of 200ppm, not to exceed a maximum of 300ppm for 5 minutes in any 3 hour period. Sampling results indicated that the exposure of the dry cleaner exceeded the OSHA standard. The author suggests that PCE concentrations could be reduced by repairing equipment leaks. The recommends that exposure to PCE be restricted as much as possible because of its potential hazard as a carcinogen.
NIOSH-Author; NIOSH-Survey; Field-Study; IWS-71-22; Region-9; Health-surveys; Organic-solvents; Dry-cleaning-industry; Air-sampling; Worker-health; Industrial-hygiene;
NTIS Accession No.
Division of Surveillance, Hazard Evaluations and Field Studies, NIOSH, Cincinnati, Ohio, 8 pages, 6 references