Description

Microbial processes in the buffer that can result in the formation of gas and sulphide.

SKB Number

SKB FEP Number

Bu21

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 under unsaturated conditions, since the extent of aqueous reactions is limited. For saturated conditions the treatment is the same as for "Long-term". Intact canister - Long-term after saturation and "thermal" period. Quantitative estimate of sulphate reduction, limited by supply of microbe nutrients in groundwater. 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, 3.5.14; SR-Site Main report, TR-11-01, Section(s) 7.4.3