Description
The investigation holes are filled with water and erosion will not take place after installation. There are no axial hydraulic gradients along the hole so there will be no axial water flow that can erode the bentonite.
SKB Number
SKB FEP Number
BhS06
Main Category
Main category for FEP
Internal process
System Component
System component to which the FEP applies
Borehole seals
Handling
Explanation of how the FEP is treated
Intact canister, Resaturation/ "thermal" period: Neglected since the holes are initially water filled and no gradients are expected.
Intact canister, Long-term after saturation and "thermal" period: Neglected, since piping only occurs in the early part of the repository evolution.
References
Bibliographic references to obtain more information
SR-Site Buffer, backfill and closure process report, TR-10-47, Section(s) 2.8.3, 9.2.4