Health Hazard Evaluation Report Number HHE-80-219-775, Carefree of Colorado, Broomfield, Colorado

摘要

A comprehensive radio frequency (RF) survey was performed and field strengths were recorded for RF sealers producing radiation at Carefree of Colorado (SIC-3825), in Broomfield, Colorado, on July 31, 1980. The evaluation was requested by the management on behalf of an unspecified number of employees. OSHA environmental criteria for field strength were 10 milliwatts per square centimeter (mW/cm2) over any 0.1-hour period, which in far fields was equivalent to an electric strength of 40,000 square volts per meter squared (V2/m2) and a magnetic field strength of 0.25 square amperes per meter squared (A2/m2). Electric field strength readings ranged from 1296 to 416,025V2/m2 and magnetic field strength ranged from nondetectable to 0.0036A2/m2. The author concludes that a hazard from overexposure to RF radiation exists and recommends that either operators be shielded from RF sealers or kept at a greater distance from them.