Description
The canisters are emplaced horizontally along the axis of the repository tunnels on pre-compacted bentonite blocks having a dry density of ~1750 kg m-3. The remaining void around the canisters is filled with granular bentonite backfill having a dry density of ~1500 kg m-3, the granules themselves having a density of ~2100 - 2200 kg m-3.
OPA Category
Category as used in the OPA assessment
Bentonite buffer
OPA Number
Number as used in the OPA assessment
1.01
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
1.1.03, 1.1.07, 2.1.04