Fast breeder reactors are not exactly a new idea. The DOE’s predecessor agency, the Atomic Energy Commission, pushed fast breeder reactors in the 1970s as the energy solution in what was thought to be a uranium-poor world. It turned out we live in a uranium-rich world, so the expensive project, whose safety problems had not been fully resolved, made no economic sense. Congress canceled the Clinch River Fast Breeder Reactor demonstration project in 1983. Enthusiasts tried but failed to revive fast reactors during the second Bush administration. That effort flopped. Now they are trying again with Natrium, a scaled-up version of a General Electric design for a small sodium-cooled, plutonium-fueled fast breeder reactor (natrium is German for sodium).
TerraPower, of course, is Bill Gates’s company. One might ask, naively, why he of all people needs government support if the Natrium project is as good as he apparently thinks it is, but let us pass over that to focus on what the project technically entails and the difficulties those technical details pose.
