Description

The formation, concentration, stability and transport of colloids in the geosphere, including aggregation of radionuclides and sorption of radionuclides onto colloidal particles.

SKB Number

SKB FEP Number

Ge18

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: Neglected because of insignificant impact on geochemical conditions. Impact on radionuclide transport not relevant because of intact barriers. Temperate: Neglected because of insignificant impact on geochemical conditions. Bounding calculations of colloid-facilitated radionuclide transport performed. Periglacial: Neglected because of insignificant impact on geochemical conditions. Bounding calculations of colloid-facilitated radionuclide transport performed. Glacial: Neglected because of insignificant impact on geochemical conditions. Bounding calculations of colloid-facilitated radionuclide transport performed. Earthquakes: Impact of earthquakes on colloidal processes not addressed, but simplified calculations of radionuclide transport carried out (see Ge24).

References

Bibliographic references to obtain more information

SR-Site Geosphere process report, TR-10-48, Section(s) 1.6, 5.9; SR-Site Main report, TR-11-01, Section(s) 7.4.5