Vibrations and oscillation instability of IBR-2M Pulsed Reactor

Publications, 13 March 2023

We offer to your attention a preprint “Vibrations and oscillation instability of the IBR-2M Pulsed Reactor” P13-2022-44 published by the JINR Publishing Department. The authors are Yu. N. Pepelyshev, Ts. Tsogtsaikhan.

As a result of the studies on the statistical characteristics of pulse energy fluctuations and vibrations of the blades of the movable reflectors PO-3 at the IBR-2 and IBR-2M reactors, as well as studies of pulse energy fluctuations with a change in the sodium flow through the cores of these reactors, it has been shown that the appearance of low-frequency oscillations in both reactors is not related with vibrations of the reactivity modulator or reactor core elements.

The study has been carried out at the Frank Laboratory of Neutron Physics. Submitted to the journal “Problems of atomic science and technology. Series: Nuclear reactor physics”.