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http://dx.doi.org/10.14407/jrp.2014.39.4.159

Characteristic Evaluation of Exposed Dose with NORM added Consumer Product based on ICRP Reference Phantom  

Yoo, Do Hyeon (Department of Radiation Convergence Engineering, Yonsei University)
Lee, Hyun Cheol (Department of Radiation Convergence Engineering, Yonsei University)
Shin, Wook-Geun (Department of Radiation Convergence Engineering, Yonsei University)
Choi, Hyun Joon (Department of Radiation Convergence Engineering, Yonsei University)
Min, Chul Hee (Department of Radiation Convergence Engineering, Yonsei University)
Publication Information
Journal of Radiation Protection and Research / v.39, no.4, 2014 , pp. 159-167 More about this Journal
Abstract
In Korea, July 2012, the law as called 'Act on Safety Control of Radioactive Rays Around Living Environment' was implemented to control the consumer product containing Naturally Occurring Radioactive Material (NORM), but, there are no appropriate database and effective dose calculation system. The aim of this study was to develop evaluation technique of the exposure dose with the use of the consumer products containing NORM and to understand the characteristics of the exposed dose according to the radiation type and energy. For the evaluate of exposure dose, the ICRP reference phantom was simulated by the MCNPX code based on Monte Carlo method, and the minimum, medium, maximum energy of alphas, betas, gammas from the representative NORM of Uranium decay series were used as the source term in the simulation. The annual effective doses were calculated by the exposure scenario of the consumer product usage time and position. Short range of the alpha and beta rays are mostly delivered the dose to the skin. On the other hand, the gamma rays mostly delivered the similar dose to all of the organs. The results of the annual effective dose with $1Bq{\cdot}g^{-1}$ radioactive stone-bed and 10% radioactive concentration were employed with the usage time of 7 hours 50 minute per day, the maximum annual effective dose of alphas, betas, gammas were calculated 0.0222, 0.0836, $0.0101mSv{\cdot}y^{-1}$, respectively.
Keywords
NORM; Monte Carlo simulation; MCNPX; Equivalent dose; Effective dose;
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