Spent nuclear fuel storage building

Outer earthquake proof walls of a building are formed in the running direction of a bridge travelling type crane. Inner earthquake proof walls are disposed in the direction perpendicular to the running direction of the crane. An area for constructing an air ventilation tower is formed in the running direction of the crane at the central portion of the building. The area surrounded by the area for constructing air ventilation tower and the earthquake proof inner walls is defined as a cask storage area. Such cask storage areas are disposed symmetrically on both sides of the air ventilation tower. The crane is disposed on the roof of the building, stands on rails which are laid on the outer walls of the building and runs over the air ventilation tower. Since the crane is disposed on the roof of the building, the inner earthquake proof walls of the building can be constructed in the inside of the building, and a high earthquake proofness can be provided to the building itself. (I.N.)