Journal ArticleDOI
Modeling temperature distribution around very deep borehole disposals of hlw
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In this article, the authors proposed a safe, secure, environmentally sound, and potentially economic solution for high-level radioactive wastes, including spent fuel and fissile materials, in 4-to 5-km-deep boreholes.Abstract:
Disposal in 4- to 5-km-deep boreholes offers a safe, secure, environmentally sound, and potentially economic solution for high-level radioactive wastes, including spent fuel and fissile materials. ...read more
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Journal ArticleDOI
Deep borehole disposal of nuclear waste: engineering challenges
TL;DR: The concept of deep borehole disposal was first considered in the 1950s, but was rejected as it was believed to be beyond existing drilling capabilities as discussed by the authors, however, improvements in drilling and associated technologies and advances in sealing methods have prompted a re-examination of this option for the disposal of high-level radioactive wastes, including spent fuel and plutonium.
Journal ArticleDOI
High-density support matrices: Key to the deep borehole disposal of spent nuclear fuel
TL;DR: In this article, high-density support matrices deployed as fine metal shot along with the containers are modelled to show how decay heat from the fuel can melt the shot within weeks of disposal to give a dense liquid in which the containers were almost weightless.
Journal ArticleDOI
A model for heat flow in deep borehole disposals of high‐level nuclear waste
TL;DR: In this article, a generic physical model is established and a mathematical model set up involving the transient conductive heat flow differential equation for a cylindrical source term with realistic decay.
Journal ArticleDOI
Thermal evolution near heat-generating nuclear waste canisters disposed in horizontal drillholes
TL;DR: In this paper, the authors consider the disposal of spent nuclear fuel and high-level radioactive waste in horizontal holes drilled into deep, low-permeable geologic formations using directional drilling technology.
References
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Conduction of heat in solids
H. S. Carslaw,John Conrad Jaeger +1 more
TL;DR: In this article, a classic account describes the known exact solutions of problems of heat flow, with detailed discussion of all the most important boundary value problems, including boundary value maximization.
Journal ArticleDOI
The Effects of Pressure, Temperature, and $X_{H_{2}O}$ on Phase Assemblage in Four Synthetic Rock Compositions
TL;DR: In this article, the variation in stable phase assemblage has been determined over a wide range of temperature, pressure, and water content for four compositions within the system, and the results are compared with recent vapor-saturated "rockmelting" experiments on similar natural materials.
Journal ArticleDOI
A new scheme for the very deep geological disposal of high‐level radioactive waste
TL;DR: In this article, a new multi-barrier concept is proposed for very deep, elevated-temperature disposal of vitrified HLW, spent fuel and ex-military and other fissile materials which involves melting and recrystallization of a granitic host rock utilizing the heat from the waste.
Journal ArticleDOI
Partial melting and recrystallization of granite and their application to deep disposal of radioactive waste: Part 1—Rationale and partial melting
P. G. Attrill,Fergus G. F. Gibb +1 more
TL;DR: In this article, a high temperature, deep borehole disposal scheme for nuclear waste is outlined, which requires that granite host rock can be partially melted by the heat from the waste then completely recrystallized, both on the time scale of the cooling of the waste.
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Partial melting and recrystallization of granite and their application to deep disposal of radioactive waste: Part 1—Rationale and partial melting
P. G. Attrill,Fergus G. F. Gibb +1 more