Purpose of research is to develop a method for arraging routes for elimination of spontaneously formed unauthorized dumps on the territory of a municipal formation of a constituent entity of the Russian Federation.Methods. The development of a method for arraging routes for elimination of unauthorized dumps is based on the theory of graphs, which includes algorithms for finding the shortest path: Dijkstra's algorithm, Floyd-Warshall algorithm, Ford-Bellman algorithm, Hamiltonian cycle, etc. Having analyzed the peculiarities of using the listed algorithms, the authors have developed a method for arranging a route for the elimination of unauthorized dumps based on the Hamiltonian cycle.Results. The task of arranging a route is reduced to choosing those unauthorized dumps from the detected ones, which will be accepted as the vertices of the graph, between which it is necessary to find the shortest path. The authors' approach to the formation of a set of vertices of the graph is as follows. At the first stage, the initial and boundary conditions are set. The parking of special equipment (garbage trucks) is selected as the zero vertex of the graph, and the SMW polygon is selected as the last (nth) vertex. In this case, it should be taken in the account that after transporting waste from dumps to the place of their burial (landfill), the garbage truck must return back to the parking place. The limits taken into consideration are the maximum distance that the garbage truck can travel without refueling and the volume of the garbage truck body. Then, the closest to the starting point unauthorized dump which represents the greatest danger to the environment is chosen as the first vertex of the graph. An unauthorized dump closest to the first peak is chosen as the second, etc.. The search for vertices continues until the inequalities that take into account the given constraints are satisfied. Next, a graph, an adjacency matrix, and a route are formed. With this approach, for arranging a route, it is optimal to use the Hamiltonian cycle, which ensures finding the minimum path between all the vertices of the graph and returns to the starting point.Conclusion. Application of the authors' method for arranging routes for elimination of unauthorized dumps will make it possible to promptly clean up unauthorized dumps found in the city, which will significantly reduce the environmental load.

Purpose of research. The purpose of this study is to assess the potential of applying information technology, in particular mobile multifunction devices, as an additional type of control of harmful production factors in the field of labour protection.Methods. One of the main techniques used in this study is an experiment involving laboratory measurements of the level of artificially created production noise using a mobile multifunction device (smartphone) with pre-installed utilities and a calibrated device ‒ noise meter, and subsequent comparison of the results. The measurements were carried out in accordance with the methodological guidelines developed specially for mobile multifunction devices (MMFDs) by the authors.  Results. An analysis of the results obtained made it possible to assess the possibility of applying mobile multifunction devices in monitoring harmful factors in the work environment. While conducting the research, it was found that it is possible to use MMFDs in the occupational safety management system of the enterprise, since the deviations of the obtained values from the values of the calibrated noise meter adopted as the standard are insignificant. According to the results of the study, a flow diagram for the use of mobile multifunctional devices in occupational safety management systems of  an enterprise was developed. Conclusion. Thus, the use of MMFDs as an additional means of controlling the parameters of the production environment from the theoretical point of view is possible. It should be noted that in practice, application of MMFDs in the occupational safety management system will be challenging from legal and methodological viewpoints. The most basic problem is that MMFDs are not registered in the State Register of Measuring Equipment as measuring tools, which does not allow the official use of the data obtained. However, application of mobile multifunctional devices in the field of labour protection will ensure rapid collection of information on changes in indicators of harmful factors in the work environment, and as a result, will make it possible to quickly respond to these changes, which will significantly reduce the risk of accidents and occupational diseases.