Study on practical elimination of serious accidents in small modular reactors of nuclear power plants

As the representative of high-density energy and clean energy, nuclear power has prominent advantages. Using nuclear power to generate electricity can not only alleviate the problem of energy tension, but also solve the problem of pollution faced by other energy sources. Therefore, nuclear power has become one of the major energy sources vigorously developed by countries around the world. With the development of the nuclear power industry, the nuclear industry has begun to research and develop various types of new reactors with a view to the future in order to further improve the safety and economy of nuclear power. In recent years, small modular reactors have gained wide attention due to their low initial cost, short construction period, flexible power plant layout, and wide use. At the same time, the small modular reactor of nuclear power plant also has great disadvantages, that is, the effectiveness of the safety system of the small modular reactor of nuclear power plant is difficult to be guaranteed under complex conditions, especially in the problem elimination after the accident, which has been the focus and difficulty of nuclear energy research in all countries. Therefore, taking the Westinghouse small modular reactor designed by Westinghouse as an example, this paper studies the actual elimination effects and measures for serious accidents of small modular reactors in nuclear power plants, and then verifies the safety of small modular reactors. After research, after a serious accident occurred in a small modular reactor, timely elimination of the residual heat of the small modular reactor is the key and difficult work to eliminate the small modular reactor; the passive core makeup tank designed in the small modular reactor has a rapid and excellent mitigation effect after a serious accident.