Risk-Oriented Approach to the Assessment of Working Conditions of Workers With Increased Thermal Exposure

Problem statement. The issue of studying the working conditions of workers with increased heat exposure is considered. Diseases provoked by harmful working conditions have a rather long incubation period, so their manifestation is not always easy to recognize and there are difficulties in establishing the root cause of occupational disease. The purpose of the article. Development and implementation of risk assessment methodology based on the joint action of harmful and hazardous industrial factors and regularities of their intensity decrease with distance from the source. Methodology. The impact of occupational and heterogeneous industrial factors on the employee's health, taking into account the time of action and the impact of their joint action in quantitative form, can be fairly objectively assessed on the basis of the Weber-Fechner law through the calculation of the integral index of potential risk. Structural analysis was used to determine the structure and causes of occupational diseases. Correlation analysis was carried out to find out the nature of relationships between the levels of influence of factors of the industrial environment to assess the conditions and nature of labor at the workplaces of workers, at whose workplaces the increased thermal stress was installed. Probabilistic-statistical methods were used for data processing - to determine the algorithm of transformation of environmental parameters into an indicator of occupational risk for workers with harmful working conditions. Development of a model for determining the zones of transformation of occupational risk through mutual influence on the industrial risk of the processing of research results needed the application of formalization methods. A software system for the formation of aggregated for multivariate analysis of information was used, which made it possible to build a three-dimensional model of changes in the values of the indicator of occupational risk in the space between the workplaces of employees located in the welding department. Scientific novelty. The applied risk-oriented approach using the methods of occupational and industrial risk assessment for electric welders' workplaces allows to take into account the harm to the worker's organism from the factors of the industrial environment. The established regularities allow to determine the zones of transformation of occupational risk through mutual influence into production risk, which is the justification of measures to reduce injuries and occupational diseases. Practical value. On the example of labor conditions at the workplaces of electric welders the methodology of risk assessment is developed and tested taking into account the joint action of harmful and hazardous industrial factors and regularities of their intensity decrease with distance from the source. The given risk-oriented approach allows to fulfill all the requirements and recommendations set forth in ISO 45001: its application to the working conditions of workers of hot professions (welders) allows to carry out a quantitative assessment of occupational and industrial risk at their workplaces, in particular for preparation for certification under ISO 45001. Conclusions. An effective tool for theoretical analysis of pollution zones formed during an extreme situation at gas stations has been created. The results of computational experiments are presented. The methodology of risk assessment based on the fundamental Weber-Fechner law for objective assessment of the impact of occupational and heterogeneous industrial factors on the employee's health in quantitative form through the calculation of the integral index (potential risk), which will allow to assess the working conditions at workplaces and objectively determine the class of working conditions, has been developed and implemented.