Manufacturing Process of Fuel Salt Discharge Tank for 2Mwt Liquid Thorium Based Molten Salt Reactor

Abstract At present, the research on Thorium Based Molten Salt Reactor (TMSR) mainly focuses on molten salt-molten salt heat exchanger, molten salt-air heat exchanger, high-temperature molten salt pump, gas-liquid separator and Hastelloy structure and performance, and there is no research on the manufacturing process of fuel salt discharge tank. The fuel salt discharge tank mainly performs the function of fuel loading and unloading, that is, loading and unloading the fuel salt through the gas pressure. The difference gas pressure between the core and the fuel salt discharge tank make the fuel flow into the reactor pressure vessel or flow out of the reactor pressure vessel. The fuel salt discharge tank also has the function of storing the molten salt fuel and preventing fuel leakage when the core is overheated. It exists as a safety facility and has a very important impact on the normal and safety operation of the reactor system. Based on the requirements of standards and specifications, the main manufacturing process of fuel salt discharge tank were studied, technological processes such as tank material selection, head forming, barrel rolling, welding and pneumatic test were introduced. The fuel salt discharge tank of liquid TMSR meeting the requirements of standards and specifications was successfully developed.