[KitemanSA]

"Safety features of nuclear plants seem to dominate the cost. There are many claims about the inherent safety features of thorium Molten Salt Reactors. But those claims have yet to be proven in working prototypes." Actually, yes they have. The three main safety features have all been demonstrated.

First, the working fluid is non-volatile, no pressure nor chemical reactivity to drive dispersion of trapped gaseous fission products like Xenon and Iodine. Those were the two significant dispersed radionuclides in Fukushima.

Second, those same kind of radionuclides are removed from the salt continuously so there is not a store of them to BE dispersed.

Third, any loss of power to the reactor will passively result in a dump of the salt into a non-reactive tank where it will be passively cooled. It will be "walk away safe"!