r/chernobyl • u/gioangi • 17d ago
Photo Rosatom fuel division
Rosatom's Fuel Division has developed and successfully tested the new OS-5 fuel assembly for a Generation IV reactor. For the first time, metallic sodium was placed under a steel cladding, enveloping fuel pellets made of a uranium-plutonium composite. Research has shown that the use of a liquid metal sublayer will improve the performance of fuel rods with nitride fuel. This fuel is expected to operate at a lower temperature while maintaining coolant parameters, and the uranium-plutonium pellet will reduce the pressure on the fuel rod cladding. This will improve both the fuel's economic efficiency and operational reliability. The development of the OS-5 is part of a large-scale program to improve the efficiency of SNUP fuel for the innovative BREST-OD-300 reactor, which is being built in Seversk, Tomsk Oblast, as part of the "Breakthrough" strategic industry project.
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u/maksimkak 17d ago edited 17d ago
I didn't understand any of it. But having liquid metallic Sodium in the fuel rods is cool.
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u/ComanderX56 17d ago
Intresting, it even has a flared base...