The object of this container is to store uranium precipitated in Mo-99 production process for long term. It will be used in the Gijang reactor. Uranium precipitates is stored in a container such as a form of filter cake. This container will be stored in the underground concrete storage for about 50 years when considering a storage facility life and safety. It is required high degree of structure integrity when considering decay heat from radioactive precipitated, external impact and etc, because it has to store radioactive materials for long term. In this study, thermal, structural and impact analysis about a container inserted 6 canisters was carried out. In the case of this thermal analysis, the object is to investigate the effect decay heat of uranium precipitate on the structure integrity of a container. The structural analysis was carried out to evaluate a structure integrity of the bottommost portion container among the 9 loaded containers. Finally, the impact analysis was carried out to evaluate the structure integrity of a container when that is dropped from maximum height of 5m during transport. As a result of this study, the structural integrity of this container is satisfactory about thermal, structural and impact.