Demonstrative Drop Tests of Transport and Storage Full-Scale Canisters with High Corrosion-resistant material

The concrete modular dry storage technologies are becoming widely-used, aiming at better economic performances. In 1997, we commenced a research program of the demonstration test for interim storage of spent fuel, mainly involving concrete cask storage technologies, particularly aiming at the realization of dry storage away from reactor in 2010. Key issues of this research include safety standards in operation and maintenance during storage and unloading/loading for transportation, long-term integrity of metal canister and concrete materials, and so on. To propose safety standards for concrete cask structures, systems, components, the demonstration program† for qualification of concrete cask performance under the normal, ab-normal and accidental events was successfully terminated[1],[2]. Especially, due to the lack of the experimental studies related to tipping-over or drop event scenarios, in this research program, the demonstration drop test program using double-lid welded multi-purpose canister (MPCs) was executed, with the aim of obtaining basic data for regulating safety. This paper introduces the summary of the CRIEPI’s drop test program.