... ABSTRACT: The deep geological repository is one of the most preferred disposal methods in many countries for high-level radioactive waste materials and spent fuel after nuclear energy production. The engineered barrier system (EBS) in the repository holds the nuclear waste-containing canister...

... and the microstructural swelling capacity of the bentonite. On this basis, recommendations for control of the homogenization in the buffer are given. 1. INTRODUCTION In the KBS-3 final disposal concept, planned for example in Finland, a bentonite buffer is emplaced between a spent nuclear fuel containing canister...

... been investigated mainly for small-sized canisters, widely considered in many national nuclear waste disposal programs. Direct disposal of larger-sized canisters originally designed for spent nuclear fuel storage and transportation has lately been examined as a promising and cost-effective alternative...

... ABSTRACT: The potential of inducing fault reactivation by a synthetic nuclear waste repository in a clay-stone formation is here investigated. The target clay formation may be expected to be almost impermeable, having self-healing and long-term plastic properties, to make sure the canisters...

... temperature ramp backfill borehole Disposal laboratory-scale test heating contour borehole wall Reservoir Characterization factor-of-safety contour rock melt borehole rhyolite fracture shear failure canister recrystallized melt 1. INTRODUCTION Deep-borehole disposal has received increased...

... coupling model hydraulic conductivity Upstream Oil & Gas Claystone repository fracture assumption saturation limestone canister granite thermal conductivity convection Switzerland conductivity host rock 1. INTRODUCTION Options for the long term storage of low, intermediate, and high...

... Simulation canister buffer evolution equation permeability Laloui 1. INTRODUCTION The fate of high-level radioactive waste is of a great importance to nuclear power plants operators and government agencies responsible for safety due to their extremely slow decay and the high risks associated...

... deformation zone canister fracture Forsmark 1. INTRODUCTION 1.1. General The Swedish Nuclear Fuel and Waste Management Co (SKB) are now concluding site investigations at the Forsmark and Laxemar sites, southeast Sweden. The upcoming safety analysis SR-Site will evaluate the long- term safety...

... primary fault displacement slip velocity canister target fracture rock fracture 1. INTRODUCTION 1.1. General In the Swedish KBS-3 concept for geological disposal of spent nuclear fuel, applied by the Swedish Nuclear Fuel and Waste Management Company (SKB), copper canisters with a cast iron insert...

... and depth) to increase the number of waste canisters that can be stored in the facility. To that end, a series of three-dimensional finite difference numerical models were developed to determine if any or all of the alternative layouts are viable. The models investigate various combinations of borehole...

... capillary barrier configuration configuration waste package pretest prediction backfill simulated waste package prediction laboratory capillary barrier resource research canister american geophysical union fine layer stratification Rock Mechanics in the National Interest, Elsworth, 77nucci...

...-lived canisters and placed deep in stable geological formations could be isolated from the biosphere for the very long time periods necessary. However, some scientists argue that waste should be stored on surface for several generations to learn more about geologic disposal and to take advantage of new...

... solid waste management cohesion Sensitivity Study wellbore integrity variation maximum displacement excavation base case Reservoir Characterization sidewall canister tensile stress Wellbore Design tensile strength stiffness heating maximum stress concentration repository...

... sensitivity to power output per canister and to borehole spacing. This suggests that the feasibility of implementing the concept at the site will be highly dependent on the maximum power output per canister and on the spacing at which the boreholes containing these canisters might be placed. 1 INTRODUCTION...

... is to be placed in canisters or containers that are intended to retard radionuclide re- lease for not less than 300 years, but need not be designed for a life of more than 1,000 years. The canisters are to be placed in drilled holes extending vertically or horizontally out from rooms, or could be merely placed...

... hydraulic fracturing pressure pulse reservoir geomechanics diameter Upstream Oil & Gas experiment Reservoir Characterization complex reservoir borehole canister gas Research Institute Albuquerque peak pressure sandia national laboratory Cuderman boundary New Mexico wellbore...

... U12g.10HFS #18 in G tunnel and then reamed to 8 in. The holes were drilled at a -10% grade, 20 ft deep and spaced 15 ft apart. Figure 2 shows one of the propellant canisters that were inserted into the holes. These canisters contained (1) the propellant, which was jacketed inside the porous plate...

...SOlVIE RESULTS FROIVl A FIELD INVESTIGATION OF THERIVIO-IVlECHANICAL LO DING OF A ROCK IVlASS WHEN HEATER CANISTERS ARE EIVIPLACED IN THE ROCK by M. Hood, U. of California, Berkeley This paper was presented at the 20th U.S.Symposium on Rock Mechanics, held in Austin, Texas, June 4-6, 1979...

... of radioactive waste isolation rooms using a baseline design geome- try (Figure 1). The S.0 m high x 6.3 m wide x 190 m long rooms are separated by iS m thick pillars and are ass ned to be located at 1,000 m depth in a granitic rock mass in the Canadian Shield. Radio- active waste canisters are assumed...

... be operating in Canada to the year 2025, a repository facility ß ust be able to contain all the wastes from approxi- mately 700,000 tonnes of spent fuel. This would require disposal of approximately 1,082,000 canisters of high-volume reprocessing waste, with a heat pro- duction of 250 watts per canister...