Storage Cask Drop Test on Reinforced Concrete Slab

As of the present, no technical standards have been established to ensure the structural integrity of casks for storing spent fuel. It can be assumed that the accident caused by the falling of casks during their handling in the storage facilities is the severest condition structurally, though there have been few demonstration test examples and evaluations made so far with respect to this problem. The object of the present research is to demonstrate and evaluate the structural integrity of casks in case they fall during their handling in the storage facilities. For this purpose, we performed drop tests of full- scale casks on a reinforced concrete (RC) slab representing the floor of the storage facilities, with consideration during storage (cask lifting orientation, drop height, etc.) . Meanwhile, drop analysis was conducted for these drop tests to establish a technique for analyzing the dropping of casks on a reinforced concrete slab. Regarding the results of said research, please refer to other studies (Ito et al., 1992).