Final Debriefing Session on the Mizunami Underground Research Laboratory Project, February 9, 2022, Mizunami-shi, Gifu-ken, Japan

Nishio, Kazuhisa*; Hanamuro, Takahiro; Mikake, Shinichiro

JAEA-Review 2022-019, 42 Pages, 2022/08

JAEA-Review-2022-019.pdf:8.26MB

Research and development project, Mizunami Underground Research Laboratory (MIU) Project at the Tono Geoscience Center (TGC) of Japan Atomic Energy Agency (JAEA), has been performed since 1996 and ended in 2019 fiscal year. On January 14, 2022, construction work such as backfilling of the research tunnels of the MIU was also successfully completed. After the research results has been compiled, we decided to hold a final debriefing session to report the research results obtained from the project and the construction details such as backfilling of the tunnels. This report summarized the presentation materials used in "The Final Debriefing Session on the Mizunami Underground Research Laboratory Project" held on February 9, 2022.

Current status of R&D activities and future plan and role of JAEA's two generic URLs

Koide, Kaoru; Osawa, Hideaki; Ito, Hiroaki; Tanai, Kenji; Semba, Takeshi; Naito, Morimasa; Sugihara, Kozo; Miyamoto, Yoichi

Annual Waste Management Symposium (WM 2015), Vol.5, p.3631 - 3645, 2015/00

JAEA has promoted R&D on HLW geological disposal technology. JAEA launched the Mizunami and the Horonobe URL Projects to cover the diversity of geological environments in Japan. The Mizunami URL Project is a geoscientific research project in the crystalline rock environment. The Horonobe URL Project consists of geoscientific studies and R&D on geological disposal technology in the sedimentary rock environment. Both URL projects have been planned to proceed in three overlapping phases, Surface-based investigation Phase, Construction Phase and Operation Phase. Currently, the construction of research galleries in both of the Mizunami and the Horonobe URLs has been completed to 500 m and 350 m depths, respectively. JAEA will promote R&D activities in Phase III including study of the long-term evolution of the geological environment, and contribute to international cooperation, development of human resources and communication amongst stakeholders through both URL projects.