Testing of type B packages in Japan to conditions different from regulatory package test standard

The present paper summarises the tests that have been performed on type B packages by CRIEPI in Japan to conditions different from the regulatory test standard for impact, fire and immersion. A drop test of a spent fuel package with transport frame was performed. The drop height was 7·8 m and the target was reinforced concrete floor. Drop tests of spent fuel packages without impact limiters were performed. The drop heights were 1·5, 5·0 and 17 m and the target was a reinforced concrete floor. Dynamic crash tests simulating accidental drop of heavy object onto a spent fuel transport/storage package without impact limiters were performed. The heavy object was a slab made of reinforced concrete. The drop heights were 5 to 17 m. A thermal test was performed using a spent fuel package specimen. During the thermal test in a furnace, the environmental temperature increased up to 1000°C. An immersion test under a head of water at 3000 m for one hour was performed. The specimens were packages of spent fuel and high level wastes. In all the cases, the integrity of the specimens was maintained.