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Barriers for Radon in Uranium Mines.

Authors
Franklin-JC; Meyer-TO; Bates-RC
Source
NTIS: PB 277 331 :24 pages
Link
NIOSHTIC No.
10001629
Abstract
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.
Publication Date
19770101
Document Type
IH; Report of Investigations
Fiscal Year
1977
NTIS Accession No.
PB-277331
NTIS Price
A03
Identifying No.
RI 8259
NIOSH Division
SRC;
Source Name
NTIS: PB 277 331
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