Digital Technology for Constructing the Acoustic Field of Reactor Plants of the VVER Type

In this paper, the existing results of this study have been carried out at NRU MPEI to create digital technologies for constructing the acoustic field of primary circuit equipment designed to manage the life cycle of nuclear power plants (NPPs) with VVER and develop their digital twins. The purpose of this paper is to study the influence of non-design dynamic loads on equipment and the causes of which are currently unknown and not provided for by regulatory documentation. The research methodology is based on using digital modeling of the acoustic field to predict its dependence on operating conditions, and also on the verification of the forecast at an operating NPP. The obtained results have been tested to the creation of methods and algorithms for calculating the acoustic field of VVER, which have no analogues in nuclear and thermal power engineering. The adequacy of the acoustic field of the VVER primary circuit to a group of simultaneously functioning Helmholtz resonators has been proved.