Description
Localised swelling into fractures intersecting the deposition hole, which may lead to separation of individual montmorillonite layers, or small groups of mineral layers (dispersion).
SKB Number
SKB FEP Number
Bu18
Main Category
Main category for FEP
Internal process
System Component
System component to which the FEP applies
Buffer
Handling
Explanation of how the FEP is treated
Intact canister - Resaturation/ "thermal" period. Neglected if total cation charge is > 4mM. Otherwise modelled.
Intact canister - Long-term after saturation and "thermal" period. Neglected if total cation charge is > 4mM. Otherwise modelled.
Failed canister - Resaturation/ "thermal" period. Neglected since dose rate outside canister is too low to have any effect.
Failed canister - Long-term after saturation and "thermal" period. The effect of a-radiation from nuclides from a failed canister is estimated.
Intact canister - Earthquakes. Not specifically treated.
References
Bibliographic references to obtain more information
SR-Site Buffer, backfill and closure process report, TR-10-47, Section(s) 2.2.4, 3.5.11; SR-Site Main report, TR-11-01, Section(s) 7.4.3