Health hazard evaluation determination report: HHE-77-92-541, Packard Electric, Division of General Motors Corporation, Warren, Ohio.
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HHE 77-92-541, 1978 Nov; :1-31
Employee exposures to thermal decomposition products from injection and extrusion molding of thermoplastics were evaluated on November 14 to 16, 1977, at Packard Electric, Division of General Motors Corporation (SIC-3079), Warren, Ohio. An evaluation request came from an authorized representative of employees on behalf of approximately 200 affected workers. About 25 percent of the workers interviewed reported respiratory and eye irritations, headache and nausea. Thermogravimetric analyses showed that all samples began to lose weight at approximately 250 degrees C and by 900 degrees C, all samples had lost at least 83 percent of their initial weight. Excluding benzene (71432), concentrations of airborne contaminants were well below applicable OSHA standards. Measurements of significant benzene concentrations were attributed to interference in testing. The author concludes that workers are not exposed to hazardous chemical concentrations. Proper temperature and hold times should be maintained and adequate ventilation should be provided. Employees should be removed from the work area in the event of press overheating. Hot plastic scrap should be properly disposed of, and decomposition data should be obtained for the acrylic purging compound.
NIOSH-Author; HHE-77-92-541; NIOSH-Health-Hazard-Evaluation; Miscellaneous-plastics-products; Hazard-Unconfirmed; Region-5; Health-survey; Air-sampling; Plastics-industry; Thermosetting-plastics; Medical-monitoring; Medical-screening;
Author Keywords: Plastic; Injection Molding; Mucous Membrane Irritation; Upper Respiratory and Eye; Headache; Nausea; Aldehydes; Hydrogen Chloride; Acrolein; Phthalates; Ammonia; BHT
Field Studies; Health Hazard Evaluation
NTIS Accession No.
National Institute for Occupational Safety and Health