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Characteristics of occupational safety and work hygiene amidst the pandemic
(2021) Fedorchuk-Moroz, Valentyna; Visyn, Olena
To ensure proper functioning of economic entities amidst the pandemic, namely the creation of safe and healthy working conditions and reducing the risks arising from COVID-19, employers should in the organization of work be guided by the new international standard ISO/PAS 45005: 2020 “Occupational health and safety management – General guidelines for safe working during the COVID-19 pandemic”. Particular attention should be paid to mental health of employees and their emotional recovery, as well as to rational regime of work and rest.
Evaluating the stiffness of a cast strip for protecting a preparatory mine working
(2025) Podkopaiev, Serhii; Visyn, Olena; Fedorchuk-Moroz, Valentyna
The object of this study is the deforma-tion processes in a protective structure of the preparatory working, maintained in the excavated space of the excavation area. The task addressed was ensuring the stability of the preparatory working in a deep coal mine to improve the safety of miners and coal mining. The assessment of the strength of the cast strip for the protection of prepa-ratory workings in excavation areas has been substantiated.It was experimentally established that in the zone of active influence of mining pressure on the section 0 < l < 50 m behind the treatment face, there is an exponential dependence between the length of the work-ing l (m) and the relative change in the vol-ume δV of the protective structure. It charac-terizes the safe deformation resource of the cast strip. Within its limits, the process of gaining strength of the protective structure occurs. At δV < 0.18 and the failure rate of the arched flexible support ω< 0.2, the losses of the cross-sectional area of the working do not exceed 20 %. Under conditions when δV ≤ 0.22, the resistance of the protective structure increases, which makes it possible to limit the movement of lateral rocks on the contour of the working, ensuring its overall dimensions. In cases when δV > 0.22, and 0.22 < ω < 0.68, the losses of the cross-section-al area are more than 40 %. At a distance of l > 80 m behind the breakage face, the level of threat of roof collapses approaches a critical state, which is associated with an uncontrolled increase in lateral rock dis-placements due to the loss of strength of the cast strip.The cast strip performs the functions of a supporting structure only in a certain range of physical, mechanical, and defor-mation properties.The operational condition of the pre-paratory working is ensured within the deformation resource of the cast strip. After reaching the rated strength of the cast strip, its strength makes it possible to limit the movement of lateral rocks on the contour of the working and ensure its stability at a dis-tance of l ≤ 80 m along the length of the excavation section.
Optimization of the Occupational Safety Management System at Enterprises Using Potentially Hazardous Technologies
(2026) Klymenko, Mykhailo; Visyn, Olena
Problem statement. Modern enterprises that use potentially hazardous technologies operate in conditions of increased production risks associated with the operation of complex machinery and equipment, the handling of explosive and flammable substances, and the performance of high-risk work. Traditional occupational health and safety management systems, based mainly on a reactive approach, do not provide adequate effectiveness. This necessitates a transition to a risk-based approach, which involves identifying, assessing and minimising risks at the planning and organisation stage of production processes. Improvements to occupational health and safety management systems should be aimed at preventing occupational injuries and diseases, fostering a culture of safety at work, and creating a sustainable risk management mechanism. The purpose of the article is justification of approaches to optimising occupational health and safety management systems at enterprises that use potentially hazardous technologies, taking into account the principles of risk-based management. Particular attention is paid to the issues of creating safe working conditions during the performance of high-risk work, developing practical mechanisms for reducing production risks and improving the effectiveness of the occupational safety management system. Conclusions. It has been established that when developing occupational health and safety management systems, it is necessary to take into account a set of key components, among which comprehensive and continuous risk and hazard assessment, as well as effective interaction between the components of the ‘human-machine’ system, both with each other and with the production environment, are of paramount importance. An important element is the organisation of systematic training of personnel and officials in methods of safe work using computer-integrated technologies in combination with automated control of the microclimate parameters of the working environment. Additional attention should be paid to measures for regular medical examinations of employees and monitoring of their physiological condition, as well as minimising risks associated with the technical condition of machines and mechanisms through inspections, certifications and expert assessments. An important aspect is the supervision of racking structures throughout their entire service life and the integration of training materials with data collection terminals and video terminals.

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