Health hazard evaluation report: HETA-85-111-1770, Feed Materials Production Center, Fernald, Ohio.
Smith-JM; Moss-CE Jr.; Flesch-JP
NIOSH 1987 Jan; :1-27
In response to a request by the Director of Health, State of Ohio, a hazard evaluation was made at the Feed Materials Production Center (SIC-2819), Fernald, Ohio to explore possible worker exposure to uranium (7440611) (U) releases. During an accident, approximately 270 to 370 pounds of uranium-oxide (19525156) had been released. All potentially exposed workers underwent an assay by a whole body counting system to determine the body content of uranium. All workers had a lung burden of uranium less than the maximum permissible level. Four workers were also examined by an in-vivo monitoring system to verify the results obtained with the other method. The values for U-235 (15117961) found by the in-vivo method were higher by a factor of 2 to 20 over those reported by the whole body counting system. In one case the level was equivalent to a factor of about twice the maximum permissible lung burden. All values for U-238 were below the detection level. The authors conclude that the uranium releases did not result in excessive body uranium content. The authors recommend that the Center use a permanent in-vivo assay facility for frequent, accurate monitoring of possible worker exposures to radionuclides. Lung counting should be performed semiannually for a period of several years. More radiation safety measures should be taught to the employees. A reevaluation should be made of the need for respiratory protection for machinists who machine uranium ingots.
NIOSH-Author; HETA-85-111-1770; NIOSH-Health-Hazard-Evaluation; Region-5; NIOSH-Technical-Assistance-Report; Hazard-Unconfirmed; Radioactive-isotopes; Radioactive-contamination; Whole-body-counters
7440-61-1; 19525-15-6; 15117-96-1
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-85-111-1770, 27 pages, 3 references