Why preserving a nuclear submarine as a museum is difficult

Is a Cold War Russian nuclear submarine likely to become a museum ship?

It remains uncertain; nuclear-submarine preservation is difficult because of reactor-core issues, and the proposal has yet to be demonstrated in practice.

Plans to preserve a Cold War Russian nuclear submarine remain uncertain until the work is actually carried out. Reactor-core issues make displaying a nuclear-powered vessel particularly difficult. An announcement alone does not establish that the proposed museum ship will be completed.