yes, thermal nuclear reactors are safer than fossil power plants, dams, solar power, and coal mining.
Thermal plasma reactors
All power reactors are thermal reactors except few ones that are fast nuclear reactors.
Most nuclear reactors are thermal-neutron reactors. A few fast breeder reactors have been built, but not many.
Thermal Breeder Reactors use moderators but Fast Breeder Reactors don't use moderator.
I. I. Gold'denblat has written: 'Calculaton of thermal stresses in nuclear reactors'
Probably 100 years with thermal reactors , but a correct answer is impossible today.
Nuclear reactors themselves are usually safe, and they release no pollution into the air. The thing that makes the unsafe is the highly radioactive uranium rods and nuclear wastecreated by the reactors.
Gilbert Melese has written: 'Thermal and flow design of helium-cooled reactors' -- subject(s): Design and construction, Gas cooled reactors, Helium
Uranium-238 has only one disadvantage: it is not a fissile material with thermal neutrons.But it is a fertile material good for some types of reactors or can be used in reactors with fast neutrons.
Plutonium is used as nuclear fuel for nuclear reactors. Plutonium isotopes (239, 241) are fissionable with thermal neutrons releasing an extremely great quantity of energy.
Uranium is used in nuclear power reactors to produce electricity or thermal energy.
nuclear reactors are not very safe at all. the nuclear energy buisness basically went to crap after the three mile island accident, because people decided the risks outweigh the benefits