Lead-bismuth Alloy Reactor

Lead-bismuth alloy can be used as a coolant for the reactor, and it is actually a heat exchange medium. Although the melting point of lead-bismuth eutectic alloy is slightly higher than that of sodium metal, another common reactor coolant, its chemical activity is weak, and it is not easy to react violently with water and other substances to cause danger, so it is a good reactor medium. . Lead-bismuth alloys have low melting points and high boiling points. Compared with traditional reactors, lead-bismuth alloy reactors have higher inherent safety and ability to resist serious accidents. The melting point of the thermally conductive material is too high, and it is easy to solidify due to low temperature, resulting in the scrapping of the reactor. If the boiling point is low, the heat-conducting material will easily evaporate into a gas, which is not only toxic but may also cause the shell to burst. A heat exchange medium with a low melting point and at the same time a high boiling point means higher energy density and longer operation. The lead-bismuth alloy reactor can be designed as a large-scale power plant of millions or tens of millions, and can also be designed as a small modular nuclear power source of megawatt. It can even be used as a mobile small nuclear power source, which can be loaded on ordinary-sized vehicles.