HHE Report No. HETA-85-491-1660, Cobe Laboratories, Inc., Denver, Colorado.
NIOSH 1986 Feb:10 pages
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;
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-85-491-1660, 10 pages, 6 references