Tkalych I. Improvement of the methodological approaches to occupational risk management in the mining industry

In the thesis, the actual scientific and practical task which consists in the improvement of methodical approaches to identification of industrial dangers, an estimation of professional risks, and planning of actions for labour protection at the enterprises of the mining branch is solved. Theoretical developments and practical results on the construction of occupational safety and health management system based on the risk-oriented approach are generalized. Theoretical and experimental researches for the formation of methodical maintenance of processes of identification of the dangers existing at manufacture and estimation of professional risks are carried out. To improve the Elmery method, the use of weights of production factors, which determine their impact on occupational risk, is proposed. An algorithm for occupational risk management has been developed, the implementation of which has provided the possibility of constant control over the factors of the production environment, early detection of new harmful and dangerous factors, allowed a reasonable formation of measures to reduce occupational risks to acceptable levels. The Wald criterion has been proposed to select the best option from a variety of alternative occupational risk reduction measures. The peculiarity of the developed algorithm is that not only an expert group and safety specialists are involved in occupational risk management, but also employees, which allows to more accurately identify existing hazards in the workplace. Mathematical models of acceptable accuracy are obtained, which establish the dependences of the weighting factors of production factors on the degree of harmfulness of these factors. Based on the results of experimental research, a comprehensive plan of measures to minimize the identified harmful production factors (vibration, dust, noise) was developed and implemented. The implementation of the action plan has improved working conditions and reduced occupational risk. To automate the processing of data required for sound planning of occupational risk reduction measures, the author developed a calculation system "Occupational Risk Assessment", which allowed to calculate the magnitude of occupational risk and form a plan of occupational risk mitigation. The application of the developed system at the enterprises allowed to obtain more accurate calculations and reduce the time for data processing by 20… 25%. Methodical recommendations for planning measures to reduce occupational risks have been developed, the practical use of which allows estimating occupational risk by calculation and developing reasonable preventive measures taking into account expert assessments.