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KMID : 0364920040290020073
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Journal of Radiation Protection and Research
2004 Volume.29 No. 2 p.73 ~ p.90
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Improvement on the Method of Estimating Radionuclide Concentrations in Agricultural Products for the Off-Site Internal Dose Calculation for Operating Nuclear Facilities
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Choi Yong-Ho
Lim Kwang-Muk
Hwang Won-Tae
Choi Keun-Sic
Choi Hee-Joo
Lee Chang-Woo
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Abstract
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The Reg. Guide 1.109 model was reviewed against its applicability to calculating radionuclide concentrations in agricultural products for operating nuclear facilities and an improved method was proposed. The model was so modified that the radionuclides deposited since the start of operation could be considered in assessing the root uptake. Translocation factors were introduced in the equation for calculating the concentrations in edible parts due to direct plant deposition. Values specific to Korea were set up for the input parameters of the modified model. The concentrations of ^{54}Mn,;^{60}Co,;^{90}Sr;and;^{137}Cs in rice seeds, Chinese cabbage and radish root were calculated for various hypothetical deposition histories using the Reg. Guide 1.109 model and the modified model with parameter values in the guide and those specific to Korea put in alternately. Through comparisons among the results, it could be expected that the use of the modified model with the input of parameter values specific to Korea would result In a more resonable and realistic assessment.
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KEYWORD
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agricultural product, radionuclide concentration, Reg. Guide 1.109 model, input parameter, improvement, operating nuclear facilities
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