Browsing by Author "Bilyk, V. V."

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    On the Issue of the Radon Activity of Tectonic Faults on the Qatar Peninsula
    (Український державний університет науки і технологій, Дніпро, 2025) Ulyanov, V. Y.; Bilyk, V. V.
    ENG: Purpose. The paper aims at providing the modern evaluation of radon activity in identified tectonic faults of the earth's crust based on archival data of radon measurements in groundwater which previously have been performed in the northern and eastern parts of the Qatar Peninsula. Methodology. The paper presents an additional extended justification for the application of an innovative technique for these conditions to identify the activity rate of tectonic faults in the rock foundation under the geological conditions of the Qatar Peninsula based on third-party measurements of radon in groundwater and using own universal Evaluation scale. Findings. A modern analysis of previously obtained results of radon measurements in groundwater of the Qatar Peninsula allowed us to suggest the orientation of tectonic fault directions in its northern and eastern parts and to additionally reveal the rate of their radon activity within the peninsula with a preliminary magnitude evaluation of displacement along the faults. A similar assumption was also proposed in the western part of the UAE adjacent to the peninsula, where the Barakah Nuclear Power Plant (BNPP) is located. This assumption is based on a certain similarity in the geological and tectonic conditions of the region. Originality. For the first time, the authors proposed the location of tectonic faults within the northern and eastern parts of the Qatar Peninsula according to radonometry performed for other purposes. We estimated their radon activity and the magnitude of movement along the faults. This implies increased safety during the construction and operation of various facilities, including a high degree of responsibility, particularly pipeline systems and transport communications that are important for the country's economy. Practical value. This technique can also be used in seismic monitoring for construction sites and in adjacent territories of other countries where similar explorations have not been conducted before.
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    On the Need to Conduct Additional Stress Tests to Evaluate the Safety of the Hydraulic Structures Site at the Zaporizhzhia NPP
    (Ukrainian State University of Science and Technologies, 2025) Ulyanov, V. Yu.; Bilyk, V. V.
    ENG: Purpose. Conducting a comprehensive analysis concerning the condition of the cooling pond dam at the Zaporizhzhia Nuclear Power Plant (NPP), which is a key component in the hydraulic structures system at this NPP, to justify further research. Additionally, identifying any extra or previously unaccounted factors that could affect the overall safety of the structure. Methodology. The authors performed a comprehensive review of all available engineering surveys and geotechnical research materials related to the Zaporizhzhia NPP cooling pond dam. These materials were produced by various organizations starting from the completion of the facility in 1985, with particular focus on the period 2011–2018, especially after the publication of the 2011 stress test report. Special attention was given to high precision geodetic data on settlements and deformations of grades on the cooling pond dam. This enabled a new perspective on the findings of the engineering and geological surveys, as well as the stress tests conducted based on them. Findings. Based on the analysis of the dam body soil research data, previously unaddressed issues were raised and examined, including those related to the facility's operation. The need to conduct new stress tests was justified, considering the current conditions at the NPP site and its surroundings. Practical value. For the first time, a comprehensive analysis of the facility's condition was conducted based on accumulated geotechnical data. The stress tests performed in 2011 were found to be overly optimistic. Originality. The need for further research on the facility was justified, including through a program to evaluate the technical condition of the cooling pond dam using innovative methods from the Prydniprovska State Academy of Civil Engineering and Architecture.