Computational and Experimental Substantiation of Strength and Seismic Resistance of the Ionization Chamber Suspensions in the Control and Protection Systems of Fast Neutron Reactors

Abstract

The paper presents technical solutions, results of computational and experimental substantiation of strength and seismic resistance of the ionization chamber high-temperature suspensions in the reactor control and protection systems under the normal operating conditions, as well as under a seismic impact of the maximum computed earthquake on the operating mode load. Strength under simultaneous action of the static and seismic loads is substantiated computationally by the finite element method in the Fidesys software code for the Windows environment certified by the FSBI "STC NRS" (Approval Certificate no. 573 dated 05.12.2022). Experimental studies of the design strength and resistance to seismic effects were carried out on the JSC "NIKIET" test bench. As a result of computation and experiments, it was found that stress values in the housing elements of the ionization chamber suspension were not exceeding the permissible level; and the electrical parameters remained within the limits established for the normal operation. Thus, the design and layout solutions for the project of the ionization chamber high-temperature suspensions were substantiated. Methods and results of the conducted research could be applied in design and manufacture of the similar products in terms of their purpose and operating conditions in the nuclear engineering

Please cite this article in English as:

Glazyuk Ya.V., Popov V.Yu., Fedorov M.Yu., et al. Computational and experimental substantiation of strength and seismic resistance of the ionization chamber suspensions in the control and protection systems of fast neutron reactors. Herald of the Bauman Moscow State Technical University, Series Mechanical Engineering, 2025, no. 3 (154), pp. 112--128 (in Russ.). EDN: QDDMYW

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