United States Nuclear Regulatory Commission - Protecting People and the Environment

RASCAL 4: Description of Models and Methods (NUREG-1940)

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Publication Information

Manuscript Completed: September 2012
Date Published: December 2012

Prepared by:
J.V. Ramsdell, Jr.a
G.F. Atheyb
S.A. McGuirec
L.K. Brandond

aPacific Northwest National Laboratory
P.O. Box 999
Richland, WA 99352

bAthey Consulting
P.O. Box 178
Charles Town, WV 25414-0178

cU.S. Nuclear Regulatory Commission (Retired)

dOffice of Nuclear Security and Incident Response
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

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Abstract

RASCAL 4 is a significant advancement in the U.S. Nuclear Regulatory Commission’s emergency response consequence assessment tools. RASCAL 4 includes improvements in the models and methods related to source term calculations, atmospheric dispersion and deposition, and dose calculations. Changes to the user interface will facilitate data entry, processing, and analysis. This report describes the models and methods that are included in RASCAL 4, and it describes the consequence assessment implications of changes in models and methods from RASCAL 3.