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KMID : 0364920080330010027
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Journal of Radiation Protection and Research
2008 Volume.33 No. 1 p.27 ~ p.34
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A Feasibility Study for Decision-Making Support of a Radioactive Contamination Model in an Urban Environment (METRO-K)
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Hwang Won-Tae
Han Moon-Hee
Jeong Hyo-Joon
Kim Eun-Han
Lee Chang-Woo
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Abstract
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A Korean urban contamination model METRO-K (Model for Estimates the Transient Behavior of RadiOactive Materials in the Korean Urban Environment), which is capable of calculating the exposure doses resulting from radioactive contamination in an urban environment, is taking part in a model testing program EMRAS (Environmental Modelling for RAdiation Safety) organized by the IAEA (International Atomic Energy Agency). For radioactive contamination scenarios of Pripyat districts and a hypothetical RDD (Radiological Dispersal Device), the predicted results using METRO-K were submitted to the EMRAS’s Urban Contamination Working Group. In this paper, the predicted results for the contamination scenarios of a Pripyat district were shown in case of both without remediation measures and with ones. Comparing with the predictied results of the models that have taken part in EMRAS program, a feasibility for decision-making support of METRO-K was investigated. As a predicted result of METRO-K, to take immediately remediation measures following a radioactive contamination, if possible, might be one of the best ways to reduce exposure dose. It was found that the discrepancies of predicted results among the models are resulted from 1) modeling approaches and applied parameter values, 2) xposure pathways which are considered in models, 3) assumptions of assessor such as contamination surfaces which might affect to an exposure receptor and their sizes, 4) parameter values which are related with remediation measures applied through literature survey. It was indentified that a Korean urban contamination model METRO-K is a useful tool for dicision-making support through the participation of EMRAS program.
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KEYWORD
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Urban environment, Radioactive contamination, Remediation measures
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