Main Title |
Feasibility of characterizing concealed openings in the house-soil interface for modeling radon gas entry / |
Author |
Nielson, K. K. ;
Rogers, V. C.
|
Other Authors |
|
CORP Author |
Rogers and Associates Engineering Corp., Salt Lake City, UT. ;Florida State Univ., Tallahassee. Dept. of Urban and Regional Planning.;Environmental Protection Agency, Washington, DC. Office of Research and Development.;Florida Dept. of Community Affairs, Tallahassee. |
Publisher |
U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, |
Year Published |
1995 |
Report Number |
EPA 600/R-95/020 |
Stock Number |
PB95-178414 |
Subjects |
Radon--Measurement--Mathematical models
|
Additional Subjects |
Radon ;
Radionuclide migration ;
Soil structure interactions ;
Permeability ;
Cracks ;
Porosity ;
Leakage ;
Air infiltration ;
Foundations(Structures) ;
Soil gases ;
Radioecological concentration ;
Indoor air pollution ;
Mathematical models
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB95-178414 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
1 volume |
Abstract |
The report examines the feasibility of characterizing the total effective size of openings in the house-soil interface that permit indoor radon entry. Sensitivity analyses conducted with a lumped-parameter model (based on the detailed RAETRAD model for radon entry) demonstrate a characteristic pattern of increasing indoor radon concentrations with increasingly negative indoor air pressures. With sensitivity analyses, the lumped-parameter model indicates that the dominant parameters affecting indoor radon levels are the size of the foundation openings, the pressure-driven radon entry velocity, and the ventilation parameters for the house superstructure. By rearranging the lumped-parameter model, measured indoor radon levels can be grouped with measured sub-slab radon levels and house ventilation parameters to express radon entry rates as a linear function of indoor air pressure. |
Notes |
Microfiche. |