RACKING DEVICE FOR STORING AND/OR TRANSPORTING NUCLEAR FUEL ASSEMBLIES, INCLUDING STAGES WITH DIFFERENTIATED FUNCTIONS

摘要

The invention relates to a racking device for storing and/or transporting nuclear fuel assemblies, including first stages (Ei−1, Ei+1) for neutron absorption and thermal conductivity, as well as second stages (E2i) for mechanical strength arranged so as to alternate with the first stages, each first stage (Ei−1, Ei+1) including first and second assemblies having interlacing notches (6a, 6b) made of aluminium alloy including boron, and each second stage (Ei) comprising first and second structures (7a, 7b) stacked in the stacking direction (8) and each made of one or more materials which are free of neutron-absorbing elements, the structures (7a, 7b) being free of notches on the opposite edges thereof in the stacking direction (8).