Health hazard evaluation report: HETA-85-031-1706 (revised), National Starch, Indianapolis, Indiana.
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 85-031-1706 (revised), 1986 Sep; :1-16
A request for an investigation of pulmonary and cardiovascular disease was received from the National Starch and Chemical Corporation (SIC-2046), Indianapolis, Indiana. In a survey in March 1985, concentrations of hydrochloric-acid (7647010), sulfuric-acid (7664939), sodium-hydroxide (7646697), propylene-oxide (75569), and total and respirable starch dust were all below acceptable limits. In the Wet Mill, samples were taken of sulfur-dioxide (7446095) (SO2) which indicated exposure levels ranging from 1.7 to 2.4 parts per million, in excess of the NIOSH recommended exposure limit (REL) of 0.5ppm. Personal area breathing samples for SO2 showed levels of 1.8 to 2.5ppm in October 1985. Upper respiratory irritation occurred in some employees, presumably due to SO2 exposure. The authors conclude that workers at this facility were exposed to sulfur-dioxide concentrations in excess of the NIOSH REL. Recommendations by the authors include installation of effective engineering controls, improved employee work practices, and the use of respiratory protection to decrease SO2 exposure to within acceptable levels. Airborne concentrations of starch should be controlled through proper maintenance of equipment and good housekeeping practices. Comprehensive, annual medical examinations are recommended for all employees exposed to S02.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-85-031-1706; Region-5; Hazard-Confirmed; Respiratory-system-disorders; Sulfur-compounds; Dust-control;
Author Keywords: Wet Corn Milling; hydrochloric acid; propylene oxide; sodium hydroxide; sulfur dioxide; SO2; sulfuric acid; starch dust
7647-01-0; 7664-93-9; 7646-69-7; 75-56-9; 7446-09-5
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health