Compact sodium-cooled nuclear reactor plant in the Research Centre Karlsruhe (Germany), fast sodium-cooled reactor with an electric gross output of 21 MW. The reactor was put into operation as a thermal reactor under the name KNK I. Following the conversion to a fast reactor, it was operated under the name KNK II from 10th Oct. 1977 onwards. On 23rd Aug. 1991 it was definitely shut down. The decommissioning work commenced in 1993 and had to be completed with the “greenfield“ condition by 2013.

Then, the planned deadline moved to 2019, but the dismantling of the biological shield with a remote-controlled excavator is still under planning.