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枝尾 祐希; 佐藤 克美; 岩井 保則; 林 巧
Journal of Nuclear Science and Technology, 53(11), p.1831 - 1838, 2016/11
被引用回数:8 パーセンタイル:59.58(Nuclear Science & Technology)Detritiation system of a nuclear fusion plant is mandatory to be designed and qualified taking all the possible extraordinary situations in addition to that in a normal condition carefully into consideration. We focused on the change in efficiency of tritium oxidation of a catalytic reactor in an event of fire where the air accompanied with hydrocarbons, water vapor and tritium is fed into a catalytic reactor at the same time. Our test results indicated; (1) tritiated hydrocarbon produces significantly by reaction between tritium and hydrocarbons in a catalytic reactor; (2) there is little possibility of degradation in detritiation performance due to tritiated hydrocarbons produced in the catalyst reactor are combusted; (3) there is no possibility of uncontrollable rise in temperature of the catalytic reactor by heat of reactions; and (4) saturated water vapor enables to poison the catalyst temporarily and degrades the detritiation performance. Our investigation indicated a saturated water vapor condition without hydrocarbons would be the dominant scenario to determine the amount of catalyst for the design of catalytic reactor of the detritiation system.
吉田 浩; 小西 哲之; 成瀬 雄二
Nucl.Technol./Fusion, 3, p.471 - 484, 1983/00
D-T核融合炉の燃料循環系を対象としたパラジウム拡散器およびこれを用いた燃料精製システムを設計した。パラジウム合金膜法の適用性は、筆者らの既往研究に基づいて検討した。パラジウム拡散器の操作条件は実験により決定し、その形状・大きさはコンピュータ計算に基づいて設定した。精製システムの設計は、Los Alamos National LaboratoryのTritium Systems Test Assembly(TSTA)における、供給ガス条件に従った。本システムの必要機器は、パラジウム拡散器、触媒酸化反応器、低温トラップ、亜鉛ベッド、真空ポンプなどであり、システム構成および操作条件においていくつかの利点が挙げられる。