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In 1991, KNK II shut down and has been in the process of being decommissioned since then. The goal is to completely dismantle the plant. In April 2001, Westinghouse Electric Germany tasked us with the engineering, procurement and construction of the new installation for handling radioactive waste as well as the execution of dismantling tasks and the entire operational radiation protection.
In particular, the scope of our delivery and services included the engineering, procurement and construction of a nitrogen inertisation plant for the enclosure and the reactor tank,
a buffer stock for disassembled plant components that were moistened with sodium and a shielding bell to transport the components moistened with sodium from the reactor building to the secondary building.
In addition, the order included the modification
of the sodium washing system.
The creation of documents required for the nuclear regulatory oversight process, such as the shielding and strength calculations, work process plans, training and commissioning programs, were also part of the scope of delivery and services, as was the revision of the facilities depending on the progress of the disassembly.
The construction of the most important component groups was concluded nine month after receiving the order, the contracts for fabrication had been awarded and the documents for the nuclear regulatory oversight process had been created. The most important devices were fabricated in the following year. After a further twelve month, the devices had been supplied to the construction site and the installation had been completed.