Abstract: The invention concerns a transport device for dangerous goods containers and a process for securing dangerous goods containers inside a transport container. The transport device comprises an ISO container and a system for securing the dangerous goods containers within it. According to the invention, the system comprises: a first set of moulded units (10) which lie adjacent to one another and form a first receiving surface which completely occupies the floor of the container and has openings (12) into each of which the bottom section of a dangerous goods container (2) fits precisely; and a second set of moulded units (20) with openings (21) into each of which the top section of a dangerous goods container fits precisely and so designed that, when fitted adjacent to one another on the dangerous goods containers on the first receiving surface, they form a second receiving surface which completely occupies an intermediate level of the container parallel to the floor.