The results of an analysis of the deformation of the FA in sodium-cooled fast reactors and its effect on the temperature regime in the core of an operating reactor are reported. A change in the geometry of the core (FA jackets, fuel rod bundles, fuel rods, and others), which has a complex character and can occur in a wide range of parameters, has a considerable effect on the temperature regime in the core. A significant factor in the formation of the temperature field in FA is interchannel exchange, which effectively smoothes the local non-uniformity of the coolant temperature in FA. The thermophysical validation of the operating regimes of the FA in the core of a fast reactor in the course of a run must be performed taking account of the impact of different factors, including the deformation of FA.
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Translated from Atomnaya Énergiya, Vol. 126, No. 2, pp. 63–69, February, 2019.
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Gordeev, S.S., Sorokin, A.P. Effect of Deformation on the Temperature Regime in Fast-Reactor Cores. At Energy 126, 65–72 (2019). https://doi.org/10.1007/s10512-019-00517-1
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DOI: https://doi.org/10.1007/s10512-019-00517-1