Comparisons Between Desktop Dispersion Calculations and Computerized Air Dispersion Model Results When Results Are To Be Used in a Risk Assessment

1990 ◽  
pp. 291-299
Author(s):  
Carol Gevecker Graves
Keyword(s):  
Risk Assessment ◽  
Dispersion Model ◽  
Air Dispersion ◽  
Air Dispersion Model

Use of Source Term and Air Dispersion Modeling in Planning Demolition of Highly Alpha-Contaminated Buildings

2011 ◽  
Author(s):  
James G. Droppo ◽  
Bruce A. Napier ◽  
Jeremy P. Rishel ◽  
Richard W. Bloom
Keyword(s):  
Source Term ◽  
Dispersion Model ◽  
Dispersion Modeling ◽  
Nuclear Materials ◽  
Emission Rates ◽  
The Public ◽  
Air Dispersion Modeling ◽  
Air Dispersion ◽  
Air Dispersion Model ◽  
War Production

The current cleanup of structures related to cold-war production of nuclear materials includes the need to demolish a number of highly alpha-contaminated structures. The process of planning for the demolition of such structures includes unique challenges related to ensuring the protection of both workers and the public. Pre-demolition modeling analyses were conducted to evaluate potential exposures resulting from the proposed demolition of a number of these structures. Estimated emission rates of transuranic materials during demolition are used as input to an air-dispersion model. The climatological frequencies of occurrence of peak air and surface exposures at locations of interest are estimated based on years of hourly meteorological records. The modeling results indicate that downwind deposition is the main operational limitation for demolition of a highly alpha-contaminated building. The pre-demolition modeling directed the need for better contamination characterization and/or different demolition methods—and in the end, provided a basis for proceeding with the planned demolition activities. Post-demolition modeling was also conducted for several contaminated structures, based on the actual demolition schedule and conditions. Comparisons of modeled and monitoring results are shown. Recent monitoring data from the demolition of a UO3 plant shows increments in concentrations that were previously identified in the pre-demolition modeling predictions; these comparisons confirm the validity and value of the pre-demolition source-term and air dispersion computations for planning demolition activities for other buildings with high levels of radioactive contamination.

scholarly journals Comparison of stationary and personal air sampling with an air dispersion model for children’s ambient exposure to manganese

2016 ◽  
Vol 26 (5) ◽  
pp. 494-502 ◽  
Author(s):  
Florence Fulk ◽  
Erin N Haynes ◽  
Timothy J Hilbert ◽  
David Brown ◽  
Dan Petersen ◽  
...  
Keyword(s):  
Dispersion Model ◽  
Air Sampling ◽  
Ambient Exposure ◽  
Air Dispersion ◽  
Air Dispersion Model ◽  
Personal Air Sampling

scholarly journals Air Dispersion Model to Study the Point Source Air Pollution and its Impact on Ambient Air Quality

2017 ◽  
Vol 29 (5) ◽  
pp. 1150-1154 ◽  
Author(s):  
A.K. Dash ◽  
S.K. Sahu ◽  
A. Pradhan ◽  
S.K. Dash ◽  
R.N. Kolli
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Point Source ◽  
Dispersion Model ◽  
Ambient Air ◽  
Ambient Air Quality ◽  
Air Dispersion ◽  
Air Dispersion Model

An air dispersion model for the city of Toronto, Ontario, Canada

2012 ◽  
Vol 47 (8) ◽  
pp. 1123-1137
Author(s):  
Barbara Sylvestre-Williams ◽  
Mehrab Mehrvar
Keyword(s):  
Dispersion Model ◽  
Air Dispersion ◽  
Air Dispersion Model ◽  
The City
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