Unless you build the plant next to an ocean with on-going seismic activity, you should be pretty safe unless an asteroid hits straight to the vicinity of the plant. Counting out the crazy scientists who decide to do experiments in the middle of the night of course. I think we are past that stage.
And I'm tired of anti-nuclear arguments pretending that wind, solar and hydro energy will miraculously satisfy all our energy needs in the near future. If we phase out fossil fuels and switch to using electric cars and such, we need a lot more energy. Using uranium, otherwise quite useless mineral, we can produce some portion of that energy (as proven). Especially because it doesn't depend on natural conditions so it produces stable output all year around.
I would too prefer having all-green energy sources, but I'm pragmatist and in general not afraid of taking calculated risks in life. Maybe I'm too trusting of my nuclear engineers but then again, I still take planes and ride cars.