The article deals with the problems of fire hazard of electricity-generating equipment during their exploitation. Intensive electrification of industrial and residual objects leads to the saturation of these objects with different electricity-generating equipment. Functioning of such equipment is accompanied with high heat emission and contains significant fire hazard. The electric current in an electrical conductor produces heat, when electric energy turns into thermal. All electrical equipment must be produced in strict adherence to fire safety rules and requirements. Ignoring these requirements causes heating of conductors through all the length, spunking of isolation, sparkling and, as a result, breaking-out of fire. Therefore, reducing the probability of fire even in the cases of abnormal work, wrong exploitation and foreseen refuses is the main task during planning and exploitation of electrical equipment and also during selection of structural materials. The primary purpose of fire prevention measures in the electrical equipment is avoiding of its self-ignition, and localization of fire after the self-ignition of electricity-generating equipment. Fire safety during exploitation of electricity-generating equipment depends on its technical state. Correct choice of conductor cross section is very important. Protection stage of electrical equipment, type of wiring, and cable laying method must comply with environmental conditions and have the proper climatic implementation and placement category. Proper protective devices from a short circuit and overloads must be used. Their operating values must be also foreseen. All above-mentioned measures prevent fires and explosions during exploitation of electrical equipment. Key

Національний лісотехнічний університет України Збірник науково-технічних праць 270 • радіус пили, мм-180,7; • довжина шляху різця в деревині, м-130; • частота обертів пили, об./хв-1380.

International scientific conference 102 kafedri-informacijnix-texnologij-v-arxitekturi/vitayemo-krashhix-studentivz-opanuvannyam-archicad-arx-26-vasil-nagaj/, Київський національний університет будівництва і архітектури, (дата звернення: 29.10.2022).

Матяш В. М. заступник директора з навчальної роботи Відокремлений структурний підрозділ "Одеський автомобільно-дорожній фаховий коледж Державного університету "Одеська політехніка" м. Одеса, Україна

The article is devoted to the aspects of engineering provision of forces for the state border protection, namely the use of a blocking barrier obstacle to block certain areas of the territory in order to prevent a mass transfer of the state border violators at the border checkpoints or during the cessation of massive disturbances in the border areas. It also deals with the determination of the stability of the blocking barrier obstacle in the process of preparing it for its intended purpose in case of preventing the passage or breakthrough of the crowd on the prohibited areas of the territory. Proceeding from the above presented in the article, the state border guard forces were requested to use a new construction of a barrier, namely: a blocking barrier obstacle to which Ukraine's patents for invention were obtained. The peculiarity of the blocking barrier obstacle is that it consists of hollow connecting elements made of light polymer material. To increase the stability of the blocking barrier in case of external hollow loads, the connecting elements are filled with liquid. Sustainability refers to the ability of the structure to withstand the external loads, capable to shift or overturn them, thus ensuring the increase in the efficiency of the task of preventing passage or breakthrough of violators into the prohibited areas of the territory at the checkpoints. This feature of the blocking barrier obstacle allows construct various design and layout variants, each of which has certain advantages and disadvantages. The article section contains the study of the processes of the external loads influence on the hollow connecting elements of the blocking barrier obstacle on various volumes and ways of filling it with liquid. Mathematical models of the blocking barrier obstacle stability with liquid have been constructed in case of applying external loads. The analysis of theoretical studies results of the external loads influence on the hollow connecting elements of the blocking barrier obstacle has been carried out.