Anybody want to bet on when the safest becomes another Three Mile Island?
I'll bet that you can look at all the years after TMI and find many more deaths in coal mines, drilling for oil/gas than you will find in US designed and operated Nuke Plants.
There has been a design for an intrinsically safe nuke plant for years. By simply reducing the concentration of fuel in the fuel rods a reactor can be built to run with no coolant and every safety screwed up.
They have tested this design by removing the coolant and the temperature rises but only to a safe level and just stays at that level. The fuel in the rods has space to expand without damaging the rod itself.