HHE Report No. HETA-92-0306-2465, U.S. Tsubaki, Sandusky, Ohio.
NIOSH 1994 Oct:15 pages
In response to a request from management at U.S. Tsubaki (SIC-3568), Sandusky, Ohio, an investigation was begun into occupational exposure to sub radiofrequency electric and magnetic fields. The facility produced steel engineering drive and conveying chains. Electrical equipment used during the manufacturing process produced high levels of electromagnetic fields (EMFs). Occupational exposure to the EMFs was monitored in the areas of the facility using electric resistance heaters (ERH) and induction heaters (INH). Measurements revealed sub radiofrequency electric fields in the 30 to 1,000 hertz (Hz) region, ranging from 0.1 to 30 volts per meter in the ERH use areas. Sub radiofrequency magnetic fields levels associated with the ERH ranged form 0.1 to 13.9 gauss (G), in the 40 to 2,000Hz region. These levels exceeded the American Conference of Governmental Industrial Hygienists (ACGIH) threshold value of 10G. Sub radiofrequency magnetic field levels associated with INH was 40G near 10 kilohertz, which exceeded the ACGIH threshold limit value of 60 milligauss. The author concludes that exposure to sub radiofrequency magnetic fields exceeded the occupational guideline limits. The author recommends that exposure levels be reduced.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-92-0306-2465; Hazard-Confirmed; Region-5; Electromagnetic-fields; Magnetic-fields; Occupational-exposure; Nonionizing-radiation; Electrical-equipment; Industrial-factory-workers;
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-92-0306-2465, 15 pages, 4 references