The ADE-2 is a dual use water-cooled thermal graphite-moderated reactor. The reactor was dual-purpose - producing weapons-grade plutonium and providing heat and electricity. The RBMK series nuclear reactors are based on the ADE series reactors.
Construction started in December 1963. The reactor was shut down in April 2010.
The scope of decommissioning was much greater than with AD and ADE-1, which were single-purpose and performed only defense tasks.
In 2021 it was decided to make ADE-2 a museum exhibition.
These two sources show slightly different date of start and shutdown.
Legacy AD and ADE-1 are almost decommissioned. ADE-3, ADE-4, and ADE-5 were being decommissioned as of 2024.