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Shin, Jin Myeong; Park, J. J.; Lee, J. W.; Lee, J. W.
Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)2009
Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)2009
AbstractAbstract
[en] The objective of this report is to develop the optimization of off-gas trapping capabilities on pyroprocessing at KAERI. Based on KAERI's experimental results and experience on the trapping characteristics in terms of chemical species, vacuum degree, and trapping temperature, INL hot experiments will be performed in off-gas treatment system (OTS) for a voloxidizer. Experiments were performed using KAERI OTS (Off-gas Trapping System) to trap the volatile. A fly ash filter was used as a trapping media for cesium, rubidium, molybdenum, and cadmium. Ca-I and Ca-II filters were used a trapping media for technetium (rhenium), molybdenum, antimony, and tellurium, respectively. As results of trapping experiments, it was found that trapping efficiency of gaseous cesium by fly ash filter at 1100 .deg. C under a vacuum condition was increased by ∼ 10 times, in comparison with that of 1100 .deg. C. Trapping efficiency by fly ash filter at 1100 .deg C under a vacuum condition was increased by ∼ 10 times, in comparison with that of 1100 .deg. C. Successful trapping of Mo, Te, and mixed species by using Ca- II filter under a vacuum of 7.6 torr was achieved and rhenium was well trapped under a vacuum of 76 torr. Trapping performance of molybdenum by Ca- II filter was better than that of fly ash filter. This report will be used as a useful means for determining optimization of trapping capabilities for trapping semi-volatile fission products
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Sep 2009; 44 p; Also available from KAERI; 3 refs, 43 figs, 2 tabs
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Report
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