If you are suggesting that a nuclear power plant can detonate like a nuclear bomb, you are wrong, they are a completely different design. Sure they can melt down in rare cases, but that's hardly anything on the scale of a nuke. I would suggest you look at some of the stats for death rates of different power sources. Nuclear is near the bottom, coal kills thousands every year through air pollution. If you want to find a truly dangerous power source, look at hydroelectric, when a dam collapses it is more damaging than a power plant meltdown in some cases.