2017 Annual Meeting

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Oral presentation

IV. Nuclear Fuel Cycle and Nuclear Materials » 405-2 Waste Disposal and Its Environmental Aspects

[2H04-08] Geological Environment

Tue. Mar 28, 2017 10:35 AM - 12:00 PM Room H (16-303 Building No.16)

Chair: Katuhiro Tsukimura (AIST)

11:20 AM - 11:35 AM

[2H07] In situ Diffusion Experiment for siliceous mudstone at the Horonobe URL

*Hirokazu Ohno1, Masaki Takeda1, Eiichi Ishii1, Satoshi Kawate1 (1. JAEA)

Keywords:Horonobe Underground Research Laboratory, siliceous mudstone, in situ experiments, diffusion, sorption

It is necessary to clarify the mass transport behavior in a deep underground natural barrier, for improving the reliability of safety assessment of high-level radioactive waste disposal. In situ mass transport experiments are being conducted for fractures and rock matrices at the G.L. -350 m gallery in the Horonobe Underground Research Laboratory (URL). This study reports an overview and preliminary results of in situ diffusion experiments for rock matrices.