Molten salt reactor with molten moderator salt and redox-element

A method of controlling a nuclear fission process, the method comprising the steps of:

• providing a device adapted for producing energy by nuclear fission, the device comprising a core container of a core container material, which core container encloses an inner tubing of an inner tubing material, the inner tubing and/or the core container having an inlet and an outlet;
• introducing into the inner tubing a molten moderator salt comprising at least one metal hydroxide, at least one metal deuteroxide or a combination thereof, and comprising water up to 10% (w/w), and a redox-element having a reduction potential, which is larger than that of the inner tubing material, or a redox-element being a chemical species which controls the oxoacidity of the molten moderator salt;
• introducing a molten fuel salt comprising fluorides of an alkali metal, and a fissile element into the core container;
• providing a heat exchanger in fluid communication with the inlet and the outlet so as to define a heat exchange loop for removing heat from the molten moderator salt circulating in the heat exchange loop;
• and
• circulating the molten moderator salt in the heat exchange loop so as to control the temperature of the fuel salt in the core container.

A method of controlling a nuclear fission process, the method comprising the steps of:

• providing a device adapted for producing energy by nuclear fission, the device comprising a core container of a core container material, which core container encloses an inner tubing of an inner tubing material, the inner tubing having an inlet and an outlet;
• introducing a molten fuel salt into the inner tubing, which molten fuel salt comprises fluorides of an alkali metal and a fissile element;
• introducing into the core container a molten moderator salt comprising at least one metal hydroxide, at least one metal deuteroxide or a combination thereof, and a redox-element having a reduction potential, which is larger than that of the inner tubing material or of the inner tubing material and the core container material, and/or a redox-element being a chemical species which controls the oxoacidity of the molten moderator salt;
• providing a heat exchanger in fluid communication with the inlet and the outlet of the inner tubing so as to define a heat exchange loop for removing heat from the molten fuel salt circulating in the heat exchange loop;
• and
• circulating the molten fuel salt in the heat exchange loop so as to control the temperature of the fuel salt in the inner tubing.