Description

The formation of aqueous complexes between radionuclides and anthropogenic or naturally occurring chemical agents such as organic materials. Chemical agents may be present in GDF materials or otherwise be introduced into the GDF, e.g. from spillage of oil, hydraulic fluid, or solvents during GDF construction and operation. Organic compounds may also be present in the host rock and be transported by groundwater into the EBS.

Category

Category of FEP

Supercontainer EBS

Sub-category

Sub-category of FEP

Chemical processes

Ondraf Niras FEP Number

Ondraf Niras FEP Number

27

FEP Effects

Description of FEP Effects

Complexation of radionuclides with chemical agents in the EBS porewater could affect solubilities and radionuclide speciation, and thus radionuclide migration.

NEA TN2 IFEP Reference(s)

Related IFEPs from the NEA TN2 List of Proposed IFEP Revisions [NEA/RWM/R(2013)8]

2.3.4.9 Chelating agent effects (waste package). 2.4.1.6 Complexation (waste form). 2.5.2.7 Complexation (waste package). 3.2.4.8 Chelating agent effects (GDF). 3.3.2.7 Complexation (GDF).