This can very well change over the long course of human development, but right now I think nuclear power is inextricably linked to centralized management. Putting the environmental impacts aside, I don't even think the infrastructure and logistics can be run directly democratically. Nuclear power plants are basically concentrated energy output facilities. They need to be connected to a huge electricity grid designed to distribute energy from the centres to the peripheries--see the problem here? Another issue being—again, disregarding the very significant environmental consequences—the extraction and processing of nuclear ores, which require their own facilities. These are, if you ask me, breeding grounds for technocratic structures & high specialization of labour.