HHE Report No. HETA-81-227-1408, Manville Corporation, Corona, California.
NIOSH 1984 Jan:45 pages
Worker exposures to silane (7803625), phenol (108952), ammonia (7664417), and formaldehyde (50000) were investigated in July 1981 and March, May, and December, 1982 at Manville Corporation (SIC- 3296), Corona, California. The evaluation was requested by the Glass Bottle Blowers Association, Local 192, on behalf of about 150 fibrous glass production workers concerned about respiratory symptoms of coughing and wheezing. Air samples were analyzed for the four substances of interest, as well as for total and respirable dust. Bulk insulation samples were tested for asbestos (1332214). Respiratory symptom questionnaires were completed by 71 workers. Concentrations of phenol, fibrous glass, ammonia, and total and respirable dust were either below detection limits or of no hygienic significance. Formaldehyde concentrations ranged from 0.1 to 0.55 parts per million (ppm); the OSHA limit is 3ppm. Insulation material contained 40 to 50 percent chrysotile (12001295) asbestos, and one sample contained 5 to 10 percent crocidolite (12001284) asbestos. The workers reported frequent respiratory symptoms such as wheezing, breathlessness, acute cough and phlegm, chest colds, and lower respiratory illnesses. The authors conclude that a potential hazard exists from exposure to low airborne concentrations of formaldehyde; there is an increased incidence of upper and lower respiratory symptoms. They recommend the use of respirators and protective equipment, and periodic respiratory testing.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; Hazards-Confirmed; Region-9; Glass-manufacturing-industry; Air-contamination; Respirable-dust; Respiratory-irritants; Asbestos-dusts; HETA-81-227-1408;
7803-62-5; 108-95-2; 7664-41-7; 50-00-0; 1332-21-4; 12001-29-5; 12001-28-4;
Hazard Evaluation and Technical Assistance;
NTIS Accession No.
Hazard Evaluations and Technical Assistance Branch, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, Report No. HETA-81-227-1408, 45 pages, 27 references