A new Russian device will help to more accurately estimate the useful life of spent nuclear fuel at the Rosatom plant in the Krasnoyarsk Territory, acceptance tests on a prototype of the first import-replaced hybrid densitometer, created in cooperation with Green Star Instruments, have been completed. The device uses X-ray and gamma radiation, without the preparation of complex samples and chemical reagents, to measure the concentration of uranium and plutonium in the solutions created during the reprocessing of Bose nuclear fuel. The method provides more accurate results compared to the methods used today and in the future you will be able to replace some of them, which reduces the complexity of the analysis. on geoenergy North-V division | The Russian Armed Forces.