Description
Effects on the EBS resulting from excavation, operation and closure activities.
Category
Category of FEP
Sub-category
Sub-category of FEP
Ondraf Niras FEP Number
Ondraf Niras FEP Number
FEP Effects
Description of FEP Effects
These activities will induce time-dependent and space-dependent perturbations of the clay and EBS. Example effects include: changes in the pore-water pressure due to the volumetric deformation of the clay, which can affect the EBS, changes in hydraulic conductivity, and clay oxidation effects due to presence of air in the underground opening. Oxidation of the clay gives rise to sulphates and thiosulphates in pore water, which can migrate and affect the corrosion behaviour of the EBS components.
Reference(s)
References Relevant to FEP
RD&D Plan , section 4.2.2.1
NEA TN2 IFEP Reference(s)
Related IFEPs from the NEA TN2 List of Proposed IFEP Revisions [NEA/RWM/R(2013)8]