Description

Concerns thermal expansion and creep in the crushed rock in the central area as well as a number of interactions with the end plug, the near-field rock and the top seal.

SKB Number

SKB FEP Number

CA07

Main Category

Main category for FEP

Internal process

System Component

System component to which the FEP applies

Central area

Handling

Explanation of how the FEP is treated

Intact canister, Resaturation/ "thermal" period: Most mechanical processes can be neglected since the impact and the requirements on the material are low. However, the interaction between plugs and the central area is treated in the THM modelling. Intact canister, Long-term after saturation and "thermal" period: Neglected since there are no long-term requirements on the central area.

References

Bibliographic references to obtain more information

SR-Site Buffer, backfill and closure process report, TR-10-47, Section(s) 2.5.3, 6.3.1