It strikes me that the primary safety vulnerability of current nuclear reactors is the pipes that can rupture, and the pumps that can fail. Please Register or Log in to view the hidden image! Isnt it time to come up with a simpler design that doesnt need all these systems external to the core itself. Why can we have a larger scale version of a Radioisotope Generator that uses a Beta Stirling engine to convert heat to rotary motion. This would also eliminate the turbine stage. http://en.wikipedia.org/wiki/Advanced_Stirling_Radioisotope_Generator Please Register or Log in to view the hidden image! Instead of using Plutonium-238 why not use conventional fuel rods housed inside an iridium-titanium core that is surrounded not by water but by HELIUM contained in an insulated piston cylinder?