When the question of re-equipment of a hazardous production facility is raised, it must first be understood that it should be carried out in the light of the Federal Law on Industrial Safety. Modern enterprises are often equipped with a large number of dangerous equipment, which implies the presence of dangerous technological processes. Other enterprises may use hazardous substances in their production. Unfortunately, such production facilities can pose a danger for their employees and for the entire environment, and therefore for the population living in the danger zone. In addition, the more our industry develops, the more urgent the question of the analysis of such threats becomes. The greatest danger in this case is represented by large technological enterprises, since the more complex the internal production processes, the higher the probability of a disaster or accident. The article presents the results of the examination of the industrial safety of JSC Soyuzhydraulica during the technical re-equipment of the facility. Due to the production necessity, the company is carrying out technical re-equipment, within the framework of which the LK IMPRESS-III casting machine weighing 26 tons is being installed. During the examination, the foundation for the new equipment is developed with the help of the LIRA software package. Recommendations are given on its installation and operating conditions.

Within technical re-equipment of the main building of canning plant there was a need of replacement of the capacitive equipment therefore load of overlapping of the first floor increased by 40.5 tons. In this regard, a comprehensive survey of structural structures was carried out. Defects and damages detected during the examination can in the future during operation lead to a decrease in the bearing capacity of the frame elements, and therefore to physical wear of the building. Therefore, taking into account the results obtained, it was recommended to implement a set of measures to restore struc-tures that were in a limited working condition. The check calculation of the structural structures of the first floor in the restoration room was carried out by the LIRA-CAD software complex, which is based on the method of co-engineering el-ements. When determining the forces for a monolithic beam-free plate, the most suitable loading combinations were taken into account. The most dangerous load in this case is considered to be the band load distributed over the entire span, and continuous when the pressure is distributed over the entire area of the structure. Considering the possibility of simultaneous collapse of the above column and span part of the floor, the calculation of the strength of the latter was carried out for strip de-struction. Based on the verification calculation taking into account the current state of the mill's construc-tion structures, as well as taking into account the expected increase in the load on them associated with the installation of new technological equipment, it can be concluded that the load-bearing ca-pacity of the structures is not provided.

The reliability and durability of any structures, including in transportation, depend on operating conditions and on timely diagnostics of damages and defects arising during their normal operation. Proper diagnostics will allow to determine the degree of wear of the structures, as well as to identify causes of damages. This work will focus on industrial safety inspection, using railway bridge built in 1987 as an example. A comprehensive inspection included full technical examination of the bridge and all its structural elements. The outcome and all necessary repair recommendations are documented. Recommendations for reconstruction and restoration methods of the damaged elements and structures of the bridge are based on a scientifically accurate assessment of its technical condition to establish signs and causes of the damages. Based on the results of the comprehensive inspection of all the damages in the bridge structure, the technical condition of the bridge is assessed three points on a five-point scale. The identified failures in durability and safety are classified in the second category. The categories of defects found are mainly related to safety - B1, B2, durability - D2, D3, and repairability - P2, Р3.

When determining the design of the floor, choosing materials and technology of its device, it is advisable to apply a systematic approach that takes into account its stress-strain state. The physical model of the floor of an industrial building in a simplified form is represented as a two-layer slab on an elastic base. The physical model of the floor of an industrial building in a simplified form is represented as a two-layer slab on an elastic base. The deformation of the ground base is inherent in the stress-strain state of the structure, which is manifested through geometric and mechanical characteristics, boundary conditions., glass fiber concrete is proposed as a coating material. It provides the compressive strength inherent in concrete and a proper crack resistance. The mathematical model is based on the S. Germain equation and the Winkler dependence. When solving the optimization problem in a linear elastic formulation, the criterion of the minimum potential energy of deformation is used, which leads to a minimum of material consumption. Its effectiveness is confirmed by comparing the results on a variational basis with the analysis of the regression equation. The modulus of longitudinal elasticity and the thickness of the layer are accepted as variable parameters. The calculation procedure uses a finite-difference analog of the mathematical model. A two-factor experiment is conducted to complete the study, the results of which are in good agreement with the theoretical calculations performed.