I'm playing a custom modpack right now with Industrial Craft 2 in it and want to build a nuclear reactor. A few years ago I played Tekkit and there was a way to monitor what is going on inside the reactor with a computer-kind of block with a display in every size you want it to have. And you could build a automatic turn-off if the reactor went to hot, things like that. So build a complete controll room next to the reactor chamber within a safe distance. I think it was a seperate mod, because I can not find anything like it in IC2. And I still could not find the mod.