||RAETRAD model of radon gas generation, transport, and indoor entry :
Nielson, Kirk K. ;
Rogers, V. C. ;
Holt, R. B.
||Rogers and Associates Engineering Corp., Salt Lake City, UT. ;Cohen (S.) and Associates, Inc., McLean, VA.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.;Florida Dept. of Community Affairs, Tallahassee.
||U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory,
||EPA 600-R-94-198 ; PB95-142030; RAE-9127/10-1R1; EPA-68-DO-0097
Radon--Measurement--Mathematical models ;
Soil structure interactions ;
Radionuclide migration ;
Nuclear decay ;
Residential buildings ;
Indoor air pollution ;
Natural radioactivity ;
Radioecological concentration ;
Soil gases ;
Air flow ;
Concrete slabs ;
Mathematical models ;
||Region 10 Library/Seattle,WA
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||1 v. (various pagings) : ill. ; 28 cm.
||The report describes the theoretical basis, implementation, and validation of the RAdon Emanation and TRAnsport into Dwellings (RAETRAD) model, a conceptual and mathematical approach for simulating radon (222Rn) gas generation and transport from soils and building foundations to the indoor environment. It has been implemented in a computer code of the same name to provide a relatively simple, inexpensive means of estimating indoor radon entry rates and concentrations. RAETRAD uses the complete, multi-phase differential equations to calculate radon generation, decay, and transport by both diffusion and advection (with pressure-driven air flow). The equations are implemented in a steady-state, 2-dimensional finite-difference mode with elliptical-cylindrical geometry for maximum efficiency and modeling detail. The radon generation, decay, and transport part of RAETRAD was validated by similar comparisons with 1-dimensional analytical calculations for open and concrete-covered soils. Most radon concentration profiles and surface radon fluxes for these comparisons were also within 1%.
||"November 1994." "EPA 600-SR-94-198." "EPA Interagency Agreement RWFL 933783-01." "Contract 68-DO-0097."
||Research Triangle Park, NC :
||Prepared in cooperation with Cohen (S.) and Associates, Inc., McLean, VA. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. and Florida Dept. of Community Affairs, Tallahassee.
|Corporate Au Added Ent
||Air and Energy Engineering Research Laboratory. ; Rogers and Associates Engineering Corporation. ; Sanford Cohen & Associates, Inc. ; Florida Department of Community Affairs.
|PUB Date Free Form
||PC A08/MF A02
|OCLC Time Stamp
|OCLC Rec Leader
||01289cam 2200301Ka 45170