CONSTOR is a cask used for transport and long-term storage of spent nuclear fuel

Spent nuclear fuel

Spent nuclear fuel, occasionally called used nuclear fuel, is nuclear fuel that has been irradiated in a nuclear reactor...

 and high-level radioactive waste manufactured by Gesellschaft für Nuklear-Service. Its inner and outer layers are steel, enclosing a layer of concrete

Concrete

Concrete is a composite construction material, composed of cement and other cementitious materials such as fly ash and slag cement, aggregate , water and chemical admixtures.The word concrete comes from the Latin word...

.

Spent nuclear fuel from the Ignalina Nuclear Power Plant

Ignalina Nuclear Power Plant

The Ignalina Nuclear Power Plant is a closed two-unit RBMK-1500 nuclear power station in Visaginas, Lithuania. It was named after the nearby city of Ignalina...

 was placed in the casks during the 2000s. In 2008, officials at the Kozloduy Nuclear Power Plant

Kozloduy Nuclear Power Plant

The Kozloduy Nuclear Power Plant is a nuclear power plant in Bulgaria situated north of Sofia and east of Kozloduy, a town on the Danube river, near the border with Romania. It is the country's only nuclear power plant and the largest in the region...

 announced their intention to use the casks there. A 9-meter drop test of the V/TC model was conducted in 2004; the results conformed to expectations.