Gas generation and gas migration in deep geological repositories for radioactive waste
Conference
·
OSTI ID:469726
- European Commission, Brussels (Belgium)
It is generally accepted that there will be some degree of gas generation in deep geological repositories for radioactive waste. This gas generation will depend on a number of factors such as the nature of the waste, the waste container, the buffer material and the near field host rock. In an ideal situation the gas generated would all dissolve in the groundwater and/or be transported away from the deep repository by the mechanisms of advection, diffusion and dispersion. However the sought-after characteristic of a repository host medium of very low permeability, e.g. bentonite buffer material and argillaceous geological media can be problematic when considering gas migration. High gas pressures might be build-up which could lead to potential fracturing of engineered barriers in the near field and enhancing groundwater flow and radionuclide migration. Various theoretical as well as experimental research activities have been undertaken to investigate the different phenomena. Within the framework of R&D programmes on Management and Storage of Radioactive Waste, conducted by the European Commission, some of the research activities are grouped together in a coordinated project named PEGASUS (Project on the Effects of GAS in an Underground Storage facility). In this project a total of about twenty research institutes and laboratories from seven different European countries are involved. This PEGASUS project will be followed up by a new project named PROGRESS (PROject of Research into Gas generation and migration in radioactive waste REpository SystemS). In this paper, an overview is given of the various research activities carried out and results obtained so far.
- OSTI ID:
- 469726
- Report Number(s):
- CONF-960804--Vol.1
- Country of Publication:
- United States
- Language:
- English
Similar Records
PEGASUS, a European research project on the effects of gas in underground storage facilities for radioactive waste
Modeling gas migration through clay-based buffer material using coupled multiphase fluid flow and geomechanics with stress-dependent gas permeability
Geochemical Processes at the Carbon Steel/Bentonite Interface in Repository Conditions
Conference
·
Thu Dec 30 23:00:00 EST 1993
·
OSTI ID:100761
Modeling gas migration through clay-based buffer material using coupled multiphase fluid flow and geomechanics with stress-dependent gas permeability
Journal Article
·
Wed Dec 25 23:00:00 EST 2024
· Geomechanics for Energy and the Environment
·
OSTI ID:2544244
Geochemical Processes at the Carbon Steel/Bentonite Interface in Repository Conditions
Conference
·
Sun Jul 01 00:00:00 EDT 2007
·
OSTI ID:21062455