The Effect of Secondary Impact on a Spent Fuel Shipping Cask Subjected to Slant-Angle Drop Tests

According to the IAEA Regulations, any cask for large radioactive sources must be able to withstand the free drop test from a height of 9m onto a rigid target The regulations require that the cask withstand a drop in an orientation for which maximum damage is expected. Conventionally, either the vertical, the horizontal or the comer drop has been assumed to be the orientation of maximum damage. However, if any arbitrary orientation such as the slant-angle drop is or could be more severe than other orientation, the safety assessment for that case should be done.