Description

The chemical and dissolution processes in which the gases found in the geosphere may be involved. Gaseous species are taken to be substances that exist as gases under the range of temperatures and pressures that include those of the repository and ambient conditions.

SKB Number

SKB FEP Number

Ge19

Main Category

Main category for FEP

Internal process

System Component

System component to which the FEP applies

Geosphere

Handling

Explanation of how the FEP is treated

Excavation/operation: Composition of mixtures modelled based on the groundwater flow modelling, assumed local mineral equilibria and site understanding. This affects the concentrations of dissolved CO2. Temperate: Modelling of diffusive transport of methane and hydrogen. Periglacial: Modelling of diffusive transport of methane and hydrogen. Glacial: Included in modelling of oxygen consumption. Modelling of diffusive transport of methane and hydrogen. Earthquakes: Not relevant.

References

Bibliographic references to obtain more information

SR-Site Geosphere process report, TR-10-48, Section(s) 1.6, 5.10; SR-Site Main report, TR-11-01, Section(s) 7.4.5