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A review of validation studies for the Gaussian plume atmospheric dispersion model

Journal Article · · Nucl. Saf.; (United States)
OSTI ID:5588029
The Gaussian plume model is the atmospheric dispersion model most widely used for estimating airborne radionuclide exposures within 80 km of the release point. The best overall uncertainty determination for such a model is a comparison of modeling predictions with environmental measurements for conditions similar to those assumed by the model. This article reviews such published comparisons and indicates that annual average air concentrations over flat terrain can be predicted within a factor of 2 to 4 using the Gaussian plume model. However, the accuracy of this model decreases as the averaging time decreases and/or the complexity of the meteorological and terrain conditions increases. More validation studies are needed to determine whether more-complex models should supplement the Gaussian model in radiological assessments under some circumstances. This review can provide guidance to decision makers who use Gaussian plume model predictions in specific radiological dose assessments such as those found in environmental impact statements and safety analysis reports.
Research Organization:
Illinois Dept. of Nuclear Safety, Springfield; Dept. of Energy, Washington, DC
OSTI ID:
5588029
Journal Information:
Nucl. Saf.; (United States), Journal Name: Nucl. Saf.; (United States) Vol. 28:4; ISSN NUSAA
Country of Publication:
United States
Language:
English