CONSTOR® full-scale prototype drop test and measuring program

The CONSTOR® steel-sandwich cask was developed as a cost-effective design by using conventional mechanical engineering technologies and commonly available materials. The CONSTOR® consists of a cask body with an outer and an inner liner made of steel. At the upper end, the liners are welded to a ring made of forged steel. The space between the two liners is filled with heavy concrete named CONSTORIT for additional gamma and neutron shielding. The CONSTORIT consists of an iron aggregate frame and hardened cement paste. The liners of the cask and the forged head ring form the basis for the structural integrity, the CONSTORIT bears only a menial part of accident loads. The CONSTOR® concept fulfils both the internationally valid IAEA criteria for transportation and the requirements for long-term intermediate storage in the US and various European countries.