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Latest News
Retrieval of nuclear waste canisters from a borehole
Borehole disposal of spent nuclear fuel (SNF) and high-level waste (HLW) uses off-the-shelf directional drilling technology developed and commercialized by the oil and gas sectors. It is a technology that has been gaining traction in recent years in the nuclear industry. Disposal can be done in one or more boreholes (including an array) drilled into suitable sedimentary, igneous, or metamorphic host rocks. Waste is encapsulated in specialized corrosion-resistant canisters, which are placed end to end in disposal sections of relatively small-diameter boreholes that have been cased and fluid-filled. After emplacement, the vertical access hole is plugged and backfilled as an engineered barrier.
A. Kitsunezaki, JT-60U Team
Fusion Science and Technology | Volume 21 | Number 3 | May 1992 | Pages 1309-1316
Magnetic and Inertial Fusion Experiment | doi.org/10.13182/FST92-A29905
Articles are hosted by Taylor and Francis Online.
The present status and the experimental results of the initial phase of JT-60U up to the February 1992 are summarized. After the completion of the major modification in March 1991, total of more than three months of shut down work has been done to install four tangential neutral beams. Along with the present main target to conduct an effective conditioning of machine and heating systems in order to get the highest performance of JT-60U, a number of new findings are being studied in areas of plasma control, divertor, LH current drive, etc. Future plans of new 500 keV negative-ion beam system and a proposal of further modification are also described.