TheSHAD0W writes: So, what did we learn from the Fukushima nuclear power plant disaster? How can we modify existing reactors to mitigate or prevent such events? Would new reactor designs be more hardy in the face of an earthquake followed by a tsunami? And how much is this all going to cost?
My greatest question is, how much of the disaster was caused by the containment buildings exploding? Did that cause the reactor vessel to be breached, or was it inevitable? Venting the buildings to clear a build-up of hydrogen gas would have released radioactive materials to the environment, but probably not as much as having them detonate.
How would severe loss of coolant affect a pebble-bed reactor? Or a thorium-based reactor?