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http://dx.doi.org/10.4491/KSEE.2017.39.5.282

Flow Characteristics Analysis of the Decontamination Device with Mixing and Diffusion Using Radio-Isotopes Tracer  

Oh, Daemin (Korea Institute of Civil engineering and building Technology)
Kang, Sungwon (Korea Institute of Civil engineering and building Technology)
Kim, Youngsug (Korea Institute of Civil engineering and building Technology)
Jung, Sunghee (Korea Atomic Energy Research Institute)
Moon, Jinho (Korea Atomic Energy Research Institute)
Park, Jangguen (Korea Atomic Energy Research Institute)
Publication Information
Journal of Korean Society of Environmental Engineers / v.39, no.5, 2017 , pp. 282-287 More about this Journal
Abstract
The purpose of this study was predicted the effects of mixing and diffusion due to the operation of the apparatus before the development of the mixed diffusion device for the decontamination absorbent to minimize the influence of contaminant inflow due to radiation accident. The tracer used for the flow characteristics was $^{68}Ga$, $^{99m}Tc$, which is a radioactive isotope, and 2 inch NaI radiation detector was used to detect it. The impeller of the decontamination mixed diffusion system applied to this study was made into three types and the mixing diffusion effect was compared. As a result of analyzing the flow characteristics of the radio-isotope with decontamination mixed diffusion device, mixing, diffusion and flow pattern were obtained. The radial mixing type impeller was able to diffuse to the water surface by the upflow flow, and the fin structure was adjusted for finding optimal conditions. The model 3 type consists of a fin guiding part and an auxiliary fin so that the diffusion speed is higher than that of other types of impellers. It also showed a short time to reach complete mixing.
Keywords
Radio-isotopes; Decontamination; Flow Characteristics; Tracer; Impeller; Detection;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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