a short decay time shorter mean several decades or centuries at most that's very little in comparison to the highly radioactive waste from conventional nuclear power plants it's still a long time yet but it's manageable. scale small modular reactors would also produce nuclear waste each of expected to cost around $300000000.00 whether they turn out to be a commercial success will depend on has the technology is in this design under the worst case conditions the reactor will simply shut itself down without any operator action without any computer action without any ac or d.c. power and remain cool for unlimited periods without the need to water. some experts are still skeptical. the safety of the many modules but new power plants whether using nuclear fission or fusion might end up in operation sooner than we