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Radon transport in dry, cracked soil [electronic resource] : Two-dimensional, finite element model

Published
Washington, D.C : United States. Dept. of Energy. Office of Energy Research, 1989.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators
Pacific Northwest Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A two-dimensional finite element code, CRACK, simulates the effect of changes in surface air pressure on radon concentration in soil with parallel, partially penetrating cracks. A sensitivity analysis investigates the effect of changes in crack dimensions, soil characteristics, and surface air pressure on radon flux to the atmosphere from a dry, cracked soil. Radon flux is found to be most sensitive to changes in soil properties: the diffusion coefficient is most important, followed by permeability and porosity. Radon flux is also sensitive to changes in barometric pressure. Cracks have a more significant effect on radon flux from soils of low permeability. The effects of moisture should be considered in future studies, because of moisture's importance to the effective air-filled porosity, air permeability, and diffusion coefficient of soils.
Report Numbers
E 1.99:pnl-7116
pnl-7116
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Note
Published through SciTech Connect.
12/01/1989.
"pnl-7116"
"DE90008099"
Wilson, J.L.; Holford, D.J.; Schery, S.D.; Phillips, F.M.
Funding Information
AC06-76RL01830
View MARC record | catkey: 14147779