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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.
A.A. Ivanov, G.F. Abdrashitov, V.S. Belkin, A.I. Gorbovsky, V.I. Davydenko, P.P. Deichuli, A.N. Dranichnikov, V.A. Kapitonov, V.Ya. Kremyansky, V.V. Mishagin, A.A. Podminogin, V.Ya. Savkin, I.V. Shikhovtsev, N.V. Stupishin, A.V. Sitnikov, A.S. Medvedko, Yu.A. Evtushenko, V.V. Kolmogorov, I.I. Averbuch, R. Uhlemann
Fusion Science and Technology | Volume 35 | Number 1 | January 1999 | Pages 180-184
Oral Presentations | doi.org/10.13182/FST99-A11963847
Articles are hosted by Taylor and Francis Online.
Low-divergent, quasi-stationary neutral beams are often applied in modern magnetic fusion devices as a diagnostic tool providing unique information about plasma parameters. The most important requirements to these beams are sufficiently large current and energy of the particles, so that the beam could penetrate to plasma core. At the same time, duration of the beams should be long enough, close to that of a plasma shot, amounting to, at least, a few seconds for large machines. We developed neutral beam injector which is capable to meet above mentioned requirements. Plasma emitter in the injector is provided alternatively radio frequency or arc discharge in hydrogen (deuterium).