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Derivation of the Korean Radwaste Scaling Factor

[+] Author Affiliations
Kwang Yong Jee, Hong Joo Ahn, Se Chul Sohn, Su Ho Han

Korea Atomic Energy Research Institute, Daejeon, South Korea

Ki Seop Choi

Korea Hydro & Nuclear Power Company, Ltd., Seoul, South Korea

Paper No. ICEM2007-7297, pp. 659-662; 4 pages
doi:10.1115/ICEM2007-7297
From:
  • The 11th International Conference on Environmental Remediation and Radioactive Waste Management
  • 11th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B
  • Bruges, Belgium, September 2–6, 2007
  • Conference Sponsors: Nuclear Division and Environmental Engineering Division
  • ISBN: 978-0-7918-4339-0 | eISBN: 0-7918-3818-8
  • Copyright © 2007 by ASME

abstract

The concentrations of several radionuclides in low and intermediate level radioactive waste (LILW) drums have to be determined before shipping to disposal facilities. A notice, by the Ministry of Science and Technology (MOST) of the Korean Government, related to the disposal of LILW drums came into effect at the beginning of 2005, with regards to a radionuclide regulation inside a waste drum. MOST allows for an indirect radionuclide assay using a scaling factor to measure the inventories due to the difficulty of nondestructively measuring the essential α and β-emitting nuclides inside a drum. That is, a scaling factor calculated through a correlation of the α or β-emitting nuclide (DTM, Difficult-To-Measure) with a γ-emitting nuclide (ETM, Easy-To-Measure) which has systematically similar properties with DTM nuclides. In this study, radioactive wastes, such as spent resin and dry active waste which were generated at different sites of a PWR and a site of a PHWR type Korean NPP, were partially sampled and analyzed for regulated radionuclides by using radiochemical methods. According to a reactor type and a waste form, the analysis results of each radionuclide were classified. Korean radwaste scaling factor was derived from database of radionuclide concentrations.

Copyright © 2007 by ASME

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