Evaluation of Savannah River Lab. atmospheric dispersion models

Conference · Thu Jan 01 04:00:00 EST 1987 · Trans. Am. Nucl. Soc.; (United States)

OSTI ID:5564720

Addis, R P

Evaluation of atmospheric transport and dispersion models using planned releases of chemical tracers is a vital component of atmospheric contaminant modeling. The Savannah River Lab. (SRL) is conducting a continuing series of Mesoscale Atmospheric Transport Studies (MATS). These studies involve the planned release of the tracer sulfur hexafluoride (SF/sub 6/) to evaluate the performance of SRL atmospheric models, to identify areas for future model improvement, and to gain greater insight into the mechanisms of atmospheric dispersion at the Savannah River Plant (SRP). There are two primary atmospheric transport and dispersion models used at SRL: a simple Gaussian model, Puff-Plume, and a sequential Gaussian model, 2DPUF, still under development. Calculations by these models are used in conjunction with observations from sampling teams to estimate surface concentrations and doses resulting from radiologic and/or chemical contaminants released into the atmosphere. Puff-Plume is used for an initial survey of the plume and to help guide sampler deployment; 2DPUF is used for final evaluation and analysis after a release. Hence, it is important to understand how surface concentrations predicted by these models compare with those observed in an intensive series of surface measurements. The results of 14 daytime MATS, conducted in predominantly convectively unstable conditions, showed that Puff-Plume simulated the plume width well.

• OSTI ID: 5564720
• Report Number(s): CONF-870601-
• Conference Information: Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 54
• Country of Publication: United States
• Language: English

Related Subjects

500300* -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR SAMPLERS
ATMOSPHERIC CIRCULATION
ENVIRONMENTAL TRANSPORT
EQUIPMENT
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
MASS TRANSFER
MATERIALS
MATHEMATICAL MODELS
NATIONAL ORGANIZATIONS
RADIOACTIVE EFFLUENTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
SAMPLERS
SAVANNAH RIVER PLANT
SULFUR COMPOUNDS
SULFUR FLUORIDES
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WASTES