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Fusion Science and Technology
Latest News
Proposed FY 2025 budget beefs up EPA repository expertise
Funding in President Biden’s proposed fiscal year 2025 budget may signal movement toward the promulgation of a new generic Environmental Protection Agency standard for high-level nuclear waste repositories in the United States.
Satoshi Fukada, Yasushi Maeda, Yuuki Edao
Fusion Science and Technology | Volume 54 | Number 1 | July 2008 | Pages 117-121
Technical Paper | Blanket Design | doi.org/10.13182/FST08-A1777
Articles are hosted by Taylor and Francis Online.
The recovery of tritium, T, from neutron-irradiated Li by a Y plate was experimentally investigated, and a Y hot trap was designed to remove T from a flowing Li target loop of IFMIF. T generated in Li ranging from 0.01 to 0.05ppm in molar fraction was successfully removed by a Y plate at 300-500°C. The ratio of recovered T to generated one increased with temperature and immersion time. HT was the main chemical species of T that was released from Li, while HTO was the main one without Y absorption. SEM-EDX analysis revealed the transfer of not only T but also O originally included in Li as an impurity. Treatment of Y by HF was effective to remove oxides formed on the as-received Y plate and enhanced its hydrogenating rate. Conditions of a Y hot trap designed for the flowing Li target loop of IFMIF are given in the present paper.
