SPHERICAL APPROXIMATION IN GAMMA DOSE CALCULATIONS AND ITS APPLICATION TO AN EMERGENCY RESPONSE ACTION AT KORI REACTOR SITE IN KOREA

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An approximate method for estimating gamma external dose given from an arbitrary distribution of radioactive material has been developed. For the assessment of external gamma dose, the space over which radioactive material is distributed is assumed to be composed of rectangular cells. The evaluation of three-dimensional integration over the space is an extremely time-consuming task. In this study, a regular hexahedron is modeled as a volume-equivalent sphere to simplify the integration. A comparative study with a point source approximation and the Monte Carlo integration method shows that the present method gives reasonable results in a physical sense. An accident consequence assessment model has been integrated using the Gaussian puff model and an external gamma dose has been assessed for Korean meteorological data. A procedure useful for selecting the most effective protective action to a given environmental condition is also provided here.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
1995-07
Language
English
Article Type
Article
Citation

ANNALS OF NUCLEAR ENERGY, v.22, no.7, pp.441 - 452

ISSN
0306-4549
URI
http://hdl.handle.net/10203/77407
Appears in Collection
NE-Journal Papers(저널논문)
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