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DIFFUSION OF RADON THROUGH SEMI-PERMEABLE MATERIALS. Technical Progress Report

Author
Nussbaum, E.
Published
United States : [publisher not identified], 1961.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1961.
Physical Description
microopaque : positive ; 8 x 13 cm

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Summary
Experiments were conducted to investigate the rate at which radon is diffused through rubber vulcanates. A program was also begun to study the rate of transmission of tritium through similar materials. The sheet of semipermeable material was interposed between two glass vessels. Dry nitrogen or room air was admitted into one vessel and radon in air was admitted simultaneously to the other. The rate at which radon was transmitted through the semi-permeable material was evaluated by measuring the changes in radon concentration in each vessel as a function of time. The rate of transmission through Butaprene NL was approximately 5% per 110 hr. as compared with Butaprene T which permitted the transmission of 30% of the radon in 110 hr. The transmission rate of radon through Silicone Rubber #371 was approximately 30% in 9 hr and 30% was transmitted through Silicone Rubber #450 in approximately 5 hr. The diffusion rate was lower at 0 deg C than at 25 deg C. The apparatus was used in ihe same manner for tritium studies. About 30% of the tritium diffused through Silicone Rubber #371 in 70 hr. as compared with 30% in 45 hrs for Silicone Rubber SE-751. The rate of diffusion of tritium through silicone rubber was directly related to temperature. It was found that the diffusion of radon through silicone rubbers proceeds at a raie 6 to 8 times as fast as the diffusion of tritium through the same material. (M.C.G.)
Report Numbers
TID-12350
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: AT(11-1)-649
NSA number: NSA-15-016067
OSTI Identifier 4032896
Research organization: Taylor Univ., Upland, Ind.
View MARC record | catkey: 42248990