The invention relates to a storage basket (1) with interchangeable configuration, the basket being intended to be housed in a packaging (200) for transporting and / or storing radioactive materials, and comprising a plurality of transverse structures ( 20) succeeding each other in the longitudinal direction (8), the transverse structures (20) being provided in a number N corresponding to an integer greater than or equal to three, and the basket being produced by the alternation of structural stages (ESi) and stages (EEi) of spacing of the structural stages, each spacing stage (EEi) being formed by a plurality of longitudinal spacers (30), each comprising at least one elementary spacing member (32a, 32b), at least one elementary spacing member (32a) of one of the spacing stages (EEi) having a height (H1) different from the height (H2) of at least one elementary spacing member ( 32b) of another spacing stage (EEi). Figure for the abstract: Figure 2.
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