HHE Report No. HETA-88-229-1985, Ormet Corporation, Hannibal, Ohio.
NIOSH 1989 Sep:22 pages
In response to a request, an evaluation was made of possible exposures to magnetic fields and optical radiation among potroom workers at the Ormet Corporation (SIC-3334), Hannibal, Ohio. Ormet had a large aluminum reduction facility with six potrooms, each potroom consisting of two buildings, 100 feet long, housing 86 pots for a total of 1032 pots. The maximum levels of far ultraviolet, near ultraviolet, visible, and infrared radiation were nondetectable, 120 microwatts/square centimeter (cm2), 0.3 candela/cm2, and 190 milliwatts/cm2, respectively. Static magnetic field levels were as high as 1600 gauss at the location of the workers. Infrared radiation and static magnetic field levels were found to exceed the recommended guidelines from the American Conference of Governmental Industrial Hygienists of 10 milliwatts/cm2 and 600 gauss, respectively. The authors conclude that workers may be exposed to excessive levels of infrared radiation and static magnetic fields. Metal rod used to break up slag in the pots were affected by the strong magnetic fields, so that it was necessary for workers to exert considerable force to overcome the attraction to metal objects to use the rods; this may present an ergonomic hazard. The authors recommend specific measures to reduce potentially significant occupational exposures and safety risks at this facility.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-88-229-1985; Region-5; Hazard-Confirmed; Radiation-exposure; Aluminum-industry; Magnetic-fields; Nonionizing-radiation; Ultraviolet-radiation; Infrared-radiation;
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-88-229-1985, 22 pages, 14 references