A model coupling a three dimensional gas liquid compositional Darcy flow in a fractured porous medium, and a one dimensional compositional free gas flow is presented. The coupling conditions at the interface between the gallery and the porous medium account for the molar normal fluxes continuity for each component, the gas liquid thermodynamical equilibrium, the gas pressure continuity and the ...

Based on the multiple barriers concept of deep geological disposal high-level waste, fractional advection diffusion equations for radionuclide migration in layers low-permeability porous media are proposed this work. The presented models terms different definitions derivative analytically addressed via Laplace integral transform method. This work provides a theoretical foundation further simula...

In the development of deep geological repositories (DGRs), performance assessment modeling is used to evaluate integrity and engineered barriers for thousands or millions years evolution disposal system. To suitability a site DGR, geoscientific data from dedicated investigation programs are integrated into site-specific assessments. This paper presents implementation workflow aimed at comparing...

The UK’s Nuclear Decommissioning Authority Radioactive Waste Management Directorate (NDA RWMD, formerly Nirex UK Ltd), has played a leading role in establishing knowledge on geological disposal of radioactive waste in the UK. In 2001, a study was commissioned of the potential impact of releases of radionuclides from a generic repository on plants and animals (Jones et al, 2003). More recently, ...

• Criticality safety evaluation of a final disposal repository for high-level waste. Formulation canister corrosion scenarios and investigation system criticality. Reported reactivity changes due to variability in porewater composition density. Investigation criticality considering manufacturing tolerances. Evaluating the concept waste (HLW) post-closure phase is regulatory requirement many nat...

Recent research has suggested that changes in temperature and precipitation events due to climate change have had a significant impact on the availability and timing of streamflow. In this study, monthly temperature and precipitation data collected over 29 climate divisions covering the entire Colorado River basin and monthly natural flow data from 29 U.S. Geological Survey (USGS) gauge locatio...