Do any Japanese nuclear power plants offer guided tours of their facilities? I'm aware that most nuclear plants in Japan are currently not producing electricity, but that's not a big problem.
Aｓ many companies have, there is rarely a possibility to see the inside of a plant, but only to see a kind of exhibition, but stocked only with marketing material made for school tours etc.
Currently, nuclear power is the most sensitive and emotional topic in Japan and there are many movements against it. You can actually find a lot of organized tours against nuclear power. There is a very high security concern currently that someone might try to damage a plant and therefore there are currently no publicly open tours inside plants, except for people related to the industry, like this tepco employee.