Description

As long as the copper plate is intact there will be no transport of radionuclides in or through the bottom plate. If the copper is corroded and the concrete is degraded the bottom plate may act as a porous media with a rather high hydraulic conductivity. This means that the bottom plate could act as a sink for radionuclides and as a source for canister corrodants.

SKB Number

SKB FEP Number

BP16

Main Category

Main category for FEP

Internal process

System Component

System component to which the FEP applies

Bottom plate in deposition holes

Handling

Explanation of how the FEP is treated

Failed canister, Resaturation/ "thermal" period: Included in COMP23 (No failures are expected this period). Failed canister, Long-term after saturation and "thermal" period: Included in COMP23.

References

Bibliographic references to obtain more information

SR-Site Buffer, backfill and closure process report, TR-10-47, Section(s) 2.7.3, 8.5.2