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Health hazard evaluation report: HETA-94-0103-2440, Johnson Controls, Inc., Lexington, Kentucky.
Kiefer M; Wallace ME; Sheehy J
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, HETA 94-0103-2440, 1994 Jul; :1-23
In response to a joint request from union and management, an evaluation was made of possible hazardous working conditions at Johnson Controls, Inc. (SIC-3444), Lexington, Kentucky. Workers had reported eye and throat irritation during welding of galvanized metal. The company manufactured custom ventilation dampers from galvanized steel roll stock. The company employed 35 workers, 26 of whom are directly involved in the manufacturing process. Air sampling indicated that contaminant levels were below recommended exposure limits. Zinc-oxide (1314132), manganese (7439965), and iron (7439896) were detected in the welding fume samples. The highest measured concentration of specific welding fume components were detected on a 143 minute afternoon sample obtained from the Value Line welder. Even at this time, all detected levels were well below the recommended standards. No detectable levels of ozone (10028156) or nitrogen-dioxide (10102440) were found at the welding stations. Carbon-monoxide (630080) was below the recommended limits. Removable metal residue was found on surfaces used for food and beverage consumption, indicating additional cleaning is warranted. The existing ventilation system used to control welding fume was not being used as efficiently as possible. The authors conclude that an inhalation hazard was not present during the monitoring period. The authors recommend that the ventilation system be improved.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-94-0103-2440; Region-4; Metal-dusts; Hazard-Unconfirmed; Welding-industry; Metalworking-industry; Airborne-dusts; Dust-inhalation; Author Keywords: Sheet Metal Work; welding fume; zinc; nitrogen dioxide; ozone; carbon monoxide; surface contamination; eye and throat irritation; galvanized steel; MIG welding
1314-13-2; 7439-96-5; 7439-89-6; 10028-15-6; 10102-44-0; 630-08-0
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health
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Content source: National Institute for Occupational Safety and Health Education and Information Division