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Health hazard evaluation report: HETA-85-491-1660, Cobe Laboratories, Inc., Denver, Colorado.
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 85-491-1660, 1986 Feb; :1-10
Environmental surveys were conducted on November 19 and December 19, 1985 at Cobe Laboratories Inc. (SIC-2299), Lakewood and Arvada, Colorado. The Industrial Hygienist at Cobe Laboratories had requested an evaluation of radiofrequency (RF) radiation from heat sealers used for research or in the manufacture of plastic parts for disposable medical equipment. The electric (E) and magnetic (H) fields were measured at the face, chest, waist, hip, and feet positions of operators of the five heat sealers. The OSHA standard corresponds to a power density level of 4x10(4) volts squared per meter squared (V2/M2) (E-field) and 0.25 amperes squared per meter squared (A2/M2) (H-field). The American Conference of Governmental Industrial Hygienists' (ACGIH) Threshold Limit Value (TLV) is 3.77x10(3)V2/M2 for the E-field and 0.027A2/M2 for the H-field. Measured exposures ranged up to 3.5x10(4)V2/M2 for the E-field and up to 0.05A2/M2 for the H-field, when corrected for machine duty cycles. The OSHA standard was not exceeded for any of the sealers, but the ACGIH TLVs were exceeded for the two research sealers and one of the manufacturing sealers. The author concluded that workers were overexposed to RF radiation while using three of the heat sealers. Additional shielding is recommended to lower exposures to less than the ACGIH TLVs.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; Hazard-Confirmed; HETA-85-491-1660; Region-8; Electromagnetic-fields; Electrical-fields; Magnetic-fields; Textiles-industry; NIOSH-Technical-Assistance-Report; Author Keywords: Miscellaneous, Textile Goods, Not Elsewhere Classified; Heat Sealers; Radiofrequency Radiation; Shielding
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division