It gets even better than she describes here, because the kind of reactors that can recycle actinides (the heavier than Uranium isotopes in nuclear waste that are long-lived) are molten salt breeder reactors. These reactors have additional benefits beyond burning waste, they also are inherently safe incapable of meltdowns because they are firstly self-regulating, and second in the event of an overheat condition (which is nearly impossible to achieve) the worst thing that happens is it melts a drain plug and the fuel drains into a much larger tank that disperses it enough that reactions can no longer occur, and because this fuel cycle involves continuous removal of fission products, there aren't a lot of fission products in the fuel to heat the tank. These reactors are safe by physics not safe by 1000 safety mechanisms that can screw up and render you a Fukashima. As such they can be placed close enough to populations that waste heat can be used for things like space heating of homes and commercial spaces.