Barriers for Radon in Uranium Mines.
Franklin-JC; Meyer-TO; Bates-RC
NTIS: PB 277 331 :24 pages
Water-based epoxy sealants were examined during a 2-year period to determine their effectiveness as barriers to radon release in uranium mines. Radon emanation rates from uranium ore samples were monitored for extended periods in the laboratory before and after sealant application. Reduction of radon flux due to the coating of laboratory samples was approximately 80 percent. Test chambers in a dormant uranium mine were monitored to determine both short- and long-term barrier effectiveness. These field studies of the sealants indicated radon flux reductions exceeding 50 percent relatively soon after application and nearly 75 percent about 1 year later. An unexpected complication to early monitoring in the form of a large radon emanation increase, believed due to added moisture, is discussed.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 277 331