The operation of radiation hazardous facilities is currently the subject of discussion and controversy about their safety. The study of the influence of the operation of the Rostov NPP on the radiation factors of the atmospheric air of its location is carried out by the method of regression-correlation analysis. The work used the results of state monitoring of the radiation situation (monthly average and maximum monthly values) from January 2009 to December 2020 and the meteorological characteristics of the atmosphere at the NPP industrial site. The relationship between the investigated parameters in the mode of scheduled preventive maintenance, as well as in the overhaul period, is not established.

The paper describes the method that makes it possible to set up aeroballistic tests to study the aerodynamic characteristics of high-speed objects in conditions where there is an intense self-illumination (solid light) of the object. At the same time, the accuracy of external photogrammetric measurements of the spatial linear coordinates of the center of mass that meets the requirements of aerodynamic testing is provided.

The article discusses the development of an emergency situation in which a compact nuclear power plant, under the influence of the conventional explosive detonation products, moves to a ground barrier. A model that makes it possible to determine the obstacle resistance force for various initial object-soil interaction velocities is presented.

The paper briefly describes the structure of a turbine unit's modular vibration protection control system (VPCS), formulates the problems of estimating the intermodular interaction parameters that arise at the early stages of VPCS design. Based on the algorithm analysis for the operation of various CANopen protocol services, a probabilistic method is proposed for determining the main communication processes parameters in the VPCS using the queuing theory elements. The mathematical model of the VPCS using the proposed method is considered, its input parameters, the functioning algorithm and output data are described. A technique for studying a real VPCS using a model is described, the results of modeling are presented, their analysis is carried out, based on which methods for optimizing some parameters of intermodular interaction are proposed.

Optimization of the core composition of the pressurized water reactors is associated with the calculation of the temperature fields of heat exchange microcells containing separate fuel elements. Taking into account the radiation-conductive heat transfer inside the fuel element is based on the statement that the helium gap between the column of fuel pellets and the wall of the fuel element has the properties of a black body. This is not true as helium is a monatomic gas, it neither absorbs nor emits, i.e. transparent to heat radiation. The article substantiates the physical and mathematical model of a microcell of a fuel element of a pressurized water-cooled nuclear reactor, taking into account radiation heat transfer. The model takes into account that helium is transparent to thermal radiation, and the fuel element is cooled by a flow-through system of the coolant. The implementation of the model is carried out analytically using the Karman-Pohlhausen integral relations method. The temperature fields of the column of fuel pellets and the coolant channel are calculated, the temperatures of the side surfaces of the cell are determined, and the effect of radiation heat transfer on the temperature distribution in the cell is estimated.

As part of the experimental assessment of the stress-strain state of the NPP pipeline elements using devices based on the magnetic anisotropic method, changes in the wall thickness of the local section of the pipeline sample and the difference in the main mechanical stresses are obtained and evaluated. The analysis of changes in the data characterizing the stress-strain state, such as: the main mechanical stresses, the first partial derivative of the main mechanical stresses with respect to the annular generator of the sample, the modulus of the gradient of the main mechanical stresses, indicates the presence of three zones characterizing different of the studied area of the full-scale sample of the pipeline during the experiment as the local zone is thinned.

This article examines the special aspects of nuclear energy as an object to control. The article provides normative legal acts regulating this process, and conclusions on the directions of their improvement. Such a feature of nuclear power facilities as the cost of construction and operation projects, as well as the need to ensure safety in strict accordance with the current standards, distinguishing them from other business entities, is noted. The experience of the application of the mechanism of public-private partnership and its role in the formation of the competitive position of the State Atomic Energy Corporation «Rosatom» in the market of developing countries is considered.

The article considers the issues of building an effective balanced strategy for the development of a municipal entity in the conditions of factors characteristic of the territories of nuclear power facilities. As an example, the city of Volgodonsk is chosen, where the parts of divisions of State Corporation Rosatom are represented. Within the framework of the study, a range of problematic aspects of the strategic planning of the municipality is determined: the need to allocate projects of an economic orientation, drawing up a hierarchy of projects within the framework of the strategic development of the city, the criticality of the issue of financing these projects, etc. The authors made conclusions and suggestions regarding the principles of planning the strategic development of the municipality on the example of the city of Volgodonsk. The role and mutual influence of the strategic development of the city of Volgodonsk with the stable functioning of nuclear industry enterprises is determined.