| Main Title |
RAETRAD model of radon gas generation, transport, and indoor entry : |
| Author |
Nielson, Kirk K. ;
Rogers, V. C. ;
Holt, R. B.
|
| Other Authors |
|
| CORP Author |
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. |
| Publisher |
U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, |
| Year Published |
1994 |
| Report Number |
EPA 600-R-94-198 ; PB95-142030; RAE-9127/10-1R1; EPA-68-DO-0097 |
| Stock Number |
PB95-142030 |
| OCLC Number |
39312921 |
| Subjects |
Radon--Measurement--Mathematical models ;
Architecture, Domestic--Florida
|
| Additional Subjects |
Radon ;
Soil structure interactions ;
Radionuclide migration ;
Translocation ;
Nuclear decay ;
Residential buildings ;
Indoor air pollution ;
Natural radioactivity ;
Radioecological concentration ;
Soil gases ;
Infiltration ;
Permeability ;
Air flow ;
Basements ;
Concrete slabs ;
Foundations(Structures) ;
Mathematical models ;
RAETRAD model
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ESAD |
EPA 600-R-94-198 |
|
Region 10 Library/Seattle,WA |
06/19/1998 |
| NTIS |
PB95-142030 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
1 v. (various pagings) : ill. ; 28 cm. |
| Abstract |
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%. |
| Notes |
"November 1994." "EPA 600-SR-94-198." "EPA Interagency Agreement RWFL 933783-01." "Contract 68-DO-0097." |
