The invention relates to a container (1) intended for transport/storage of radioactive materials, the container comprising a container body (2) and at least one handling device (8) mounted using attachment screws (38) in a base housing (30) delimited by a base housing wall (32). According to the invention, a sealing plate (50) covering the attachment screws is installed removably in a plate housing (52) delimited by a plate housing wall (56) provided on the handling device and by a portion (58) of the base housing wall. Furthermore a seal (66) is provided inserted between a peripheral wall (60) external to the plate and the portion (58) of the base housing wall, and a seal (74) inserted between a peripheral wall (68) external to the plate and the plate housing wall (56).
