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http://dx.doi.org/10.7733/jnfcwt.2018.16.4.473

A Preliminary Study on the Evaluation of Internal Exposure Effect by Radioactive Aerosol Generated During Decommissioning of NPPs by Using BiDAS  

Song, Jong Soon (Chosun University)
Lee, Hak Yun (Chosun University)
Kim, Sun Il (Chosun University)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.16, no.4, 2018 , pp. 473-478 More about this Journal
Abstract
Radioactive aerosol generated in cutting and melting work during the NPP decommissioning process can cause internal exposure to body through workers' breath. Thus, it is necessary to assess worker internal exposure due to the radioactive aerosol during decommissioning. The actually measured value of the working environment is needed for accurate assessment of internal exposure, but if it is difficult to actually measure that value, the internal exposure dose can be estimated through recommended values such as the fraction of amount of intake and the size of particles suggested by the International Committee on Radiological Protection (ICRP). As for the selection of particle size, this study applied a value of $5{\mu}m$, which is the size of particles considering the worker recommended by the ICRP. As for the amount of generation, the amount of intake was estimated using data on the mass of aerosol generated in a melting facility at a site in Kozloduy, Bulgaria. In addition, using these data, this study calculated the level of radioactivity in the worker's body and stool and conducted an assessment of internal exposure using the BiDAS computer code. The internal exposure dose of Type M was 0.0341 mSv, that of Type S was 0.0909 mSv. The two types of absorption showed levels that were 0.17% and 0.45% of the domestic annual dose limit, respectively.
Keywords
Decommissioning; Radioactive aerosol; Internal exposure; BiDAS; Inhalation;
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  • Reference
1 Energiewerke Nord, "Environmental Impact Assessment Report for the Facility for Treatment and Conditioning of Radioactive Waste with a High Volume Reduction Factor at Kozloduy Nuclear Power Plant", EWN Final Report, P5Cd03Rev.02-EIA-R-Chapter 4 (2013).
2 M. Lippmann and R. E. Albert, "The Effect of Particle Size on the Regional Deposition of Inhaled Aerosols in the Human Respiratory Tract", American Industrial Hygiene Association Journal, 30(3), 257-275 (2007).   DOI
3 P. Aker, T. Feigenbaum, M. Meisner, and M. Thomas, "Maine Yankee Decommissioning Experience Report", Electric Power Research Institute, EPRI Detailed Experience Report, ENT000164 (2012).
4 S. Bushart, B. Couture, J. Fan, R. Haight, and C. Melin, "Connecticut Yankee Decommissioning Experience Report", Electric Power Research Institute, EPRI Technical Report, 1013511 (2006).
5 Energiewerke Nord, "Experience from Greifswald NPP Decommissioning in Germany", EWN Final Report, P5cDel03Rev02-EIA-R-Chapter 11 (2013).
6 J.I. Lee, J.L. Kim, and B.H. Kim, "International Exercise on Internal Dose Assessment in Korea", J. Radiol. Prot., 36(2), 64-70 (2011).
7 International Commission on Radiological Protection, "Individual Monitoring for Internal Exposure of Workers (Preface and glossary missing)", Publication 78, Ann. ICRP 27(3-4) (1997).
8 B.H. Kim, S.Y. Young, T.Y. Lee, and J.L. Jang, "Development of Environmental Radiation Protection Technology", Korea Atomic Energy Research Institute, KAERI Final Research Report, KAERI/RR-2801/2006 (2006).
9 J.M. Valdivieso, "Decommissioning Strategy & Method & Design Characteristics and Action Plan for Decommissioning", Proc. of the 2018 WES Education, May 28-June 1, 2018, Republic of Korea.
10 Energiewerke Nord, "Environmental Impact Assessment Report for the Decommissioning of Units 1 to 4 at Kozloduy Nuclear Power Plant", EWN Final Report, Pl6Del09Rev02-EIA-R-Chapter 1 (2013).