量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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The technical feasibility of a room temperature recombiner (RTR) for detritiation system was demonstrated. To enhance public acceptance of a nuclear fusion reactor, it is appropriate to evaluate technical reliability of tritium confinement technology taking hypothetic extraordinary situations occurred in a nuclear fusion facility into consideration. Tritium technology Group of QST has paid considerable attention to the research of oxidation technology of tritium in the RTR. In most of off normal events, process gas to the recombiner is expected to be humid. Our previous research has suggested that oxidation efficiency of tritium in the RTR in which commercial noble catalyst is packed considerably drops in presence of water vapor in the process gas. In order to overcome this issue, technology of hydrophobic catalyst has successfully developed for recombiner catalyst of RTR. In this study, detritiation of a 12 m3 containment was demonstrated with a detritiation system composed of RTR and vapor absorber. The recombiner catalyst was hydrophobic platinum catalyst TKK-H1P by Tanaka Kikinzoku Kogyo K.K.. Initial tritium concentration in the containment was 1.0 GBq/m3. The flow rate was set to 2.4 Nm3/h. The volume of recombiner catalyst was 1000 cm3. Tritium concentration in the containment smoothly decreased two order magnitude.
会議概要（会議名, 開催地, 会期, 主催者等）
13th International Symposium on Fusion Nuclear Technology (ISFNT13)
Experimental Evaluation of Tritium Oxidation Efficiency in the Room Temperature Recombiner
