Experimental bench for modeling processes in a nuclear reactor, containing a reactor core simulator and an electrical heating device for heating the heat carrier, characterized in that, in order to obtain reliable results of the effects of breaking one of the technological channels, the experimental stand further includes an injection heat exchanger for heating the heat carrier with steam, the electric heating device is made in the form of a water-heating vessel, and the core simulator represents oboj fragment of the full-scale of the core, which has a central channel defect calibrated and connected input and output through the shut-off valve to the water heating vessel, wherein all inputs fragment channels are connected via stop valves to the injection type heat exchanger, which is connected through valving center channel output.
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