Description
Corrosion of the steel canister under anaerobic conditions produces magnetite. This may result in interactions with the bentonite that modify the swelling capacity and hydraulic conductivity of bentonite near the canister surface. Volume changes would also occur (3.1/2.16). The porewater is defined by assessing the interaction of porewater from Opalinus Clay with the bentonite, taking into account the presence of iron corrosion products.
OPA Category
Category as used in the OPA assessment
Bentonite buffer
OPA Number
Number as used in the OPA assessment
2.06
Waste Relevance
Classes of waste to which this FEP is relevant
SF/HLW
NEA V1 IFEP Reference(s)
Related IFEPs from the NEA V1 IFEP list from 1999
2.1.09, 2.1.07, 2.1.08