• Title/Summary/Keyword: radioactive nuclide

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Nuclide Release from Penetrations in Radioactive Waste Container (방사성 폐기물 저장용기 표면의 결함으로부터 핵종유출 연구)

  • Kim, Chang-Lak
    • Nuclear Engineering and Technology
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    • v.21 no.4
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    • pp.302-307
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    • 1989

  • Nuclide release through penetrations in radioactive waste container is analyzed. Penetrations may result from corrosion or cracking and may be through the container material or through deposits of corrosion products. The analysis deals with the resultant nuclide release, but not with the way these penetrations occur. Numerical illustrations show that mass transport from multiple holes can be significant and may approach the mass transfer rate calculated from bare waste forms. Although partially-failed containers may present an important long-term barrier to release of radionuclides, numerous small holes on a container surface have the potential of bypassing the effectiveness of these barriers.

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Development of a Scaling Factor Prediction Method for Radioactive Composition in Low-level Radioactive Waste

  • Park, Jin-Beak;Lee, Kun-Jai
    • Proceedings of the Korean Nuclear Society Conference
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    • 1995.05b
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    • pp.833-838
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    • 1995

  • This study presents a method to predict plant-specific and operational history dependent scaling factors. Realistic and detailed approaches are taken to find scaling factors at reactor coolant. This approach begins with fission product release mechanisms and fundamental release properties of fuel-source nuclide such as fission product and transuranic nuclide. Scaling factors at various waste streams are derived from the predicted reactor coolant scaling factors with the use of radionuclide retention and build up model. This model makes use of radioactive material balance within the radioactive waste processing systems. According to input parameters of plant operation history, scaling factors predicted at reactor coolant and waste streams are well brought out the effects of plant operation history.

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