Rosatom approved a technical project for decommissioning of the plutonium production reactors at the Siberian Chemical Combine in Seversk - I-1, EI-2, ADE-3, and ADE-4. The first three reactors were shut down in 1990, the ADE-4 reactor was shut down in April 2008.

Decommissioning of the EI-2 reactor will be completed in 2015. The cost of this program is estimated to be 1.6 billion rubles.

The spent fuel storage at Seversk still contains some spent HEU "spike" fuel of the ADE reactors, accumulated there since the late 1980s. According to Rosatom, this fuel will continue to be stored at Seversk awaiting construction of reprocessing facilities at Mayak that could handle this fuel.