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Fusion Science and Technology
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.
M. E. Sawan
Fusion Science and Technology | Volume 21 | Number 3 | May 1992 | Pages 2133-2137
Blanket Shield and Neutronic | doi.org/10.13182/FST92-A30036
Articles are hosted by Taylor and Francis Online.
Neuronics analysis has been performed for LIBRA-LiTE. Using liquid lithium as a coolant and breeder results in more attractive neutronics performance features compared to Li17Pb83. The final focusing magnets and the front rows of the INPORT tubes have to be replaced every 1 and 3 years, respectively. The steel chamber wall, roof, and bottom plates are lifetime components. The overall reactor tritium breeding ratio and energy multiplication values are 1.405 and 1.123, respectively.
