検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

超高温ガス炉用LiロッドにおけるZrを用いたトリチウム閉じ込め法の検討; 高温(700$$sim$$850$$^{circ}$$C)条件下におけるZr水素吸蔵特性

Study on tritium confinement method using Li rod with Zr in very high temperature gas-cooled reactor; Hydrogen storage properties of Zr in high temperature (700$$sim$$850$$^{circ}$$C) conditions

岡本 亮*; 松浦 秀明*; 井田 祐馬*; 古賀 友稀*; 片山 一成*; 大塚 哲平*; 後藤 実 ; 中川 繁昭 ; 石塚 悦男  ; 長住 達; 島崎 洋祐 

Okamoto, Ryo*; Matsuura, Hideaki*; Ida, Yuma*; Koga, Yuki*; Katayama, Kazunari*; Otsuka, Teppei*; Goto, Minoru; Nakagawa, Shigeaki; Ishitsuka, Etsuo; Nagasumi, Satoru; Shimazaki, Yosuke

現在DT核融合発電の実用化を目指した研究が行われているが、原型炉の初期装荷用トリチウムの供給方法は明確になっていない。高温ガス炉にLiを装荷し$$^{6}$$Li(n,$$alpha$$)T反応によってトリチウムを生産する方法が考えられており、発生するトリチウムを吸収させ、ロッドからのトリチウム流出を低減させる目的でZr層を設けたロッド状のLi装荷体を提案している。本研究では超高温ガス炉(VHTR)温度条件下でZr付Liロッドの使用を想定する。同条件下におけるZr層の水素吸蔵特性を評価するため700$$^{circ}$$C以上の高温条件において円筒状Zr試料について水素吸蔵実験を行い、Zr層における水素の溶解度定数及び拡散係数を計測し評価を行ったので報告する。

Currently, many researches to achieve DT nuclear-fusion power generation are under proceeding but the method to provide initial tritium loaded to fusion prototype reactor is not clear. The method of tritium production by using high temperature gas-cooled reactor (HTGR) was proposed. In this method, lithium rods are loaded to the reactor core of HTGR and tritium is produced by $$^{6}$$Li(n,$$alpha$$)T reaction. And the method to reduce the spilled tritium by using the lithium rod with zirconium layer was proposed. In this study, the experiments to evaluate the performance of hydrogen absorption in the zirconium layer were conducted under the temperature condition more than 700$$^{circ}$$C which is the normal operation condition for the very high temperature gas-cooled reactor (VHTR). The experimental result concerning solubility and diffusion factor of hydrogen in the zirconium layer will be presented and discussed.

Access

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.