The work is devoted to design technology of centrifugal dust collectors using an experimental installation for cyclone parallel comparative tests. Currently, there is no single criterion for choosing the optimal form of cyclone, but in the most modern construction, the tendency of development of its cone part is becoming clearer. Between the geometric shape of the cyclones
and their effectiveness, there are a number of connections, which appear through the complex aerodynamics of the flows in the apparatus. The
identification and study of the relationship between the design parameters of cyclone apparatus with their aerodynamic characteristics and effective dust collection is the subject of this study.

The paper presents innovative digital solutions to reduce occupational injuries. The developed digital PPE allows you to monitor the duration of workers at height with simultaneous monitoring of the state of fixation of the cable with the carabiner. Thus, with a high probability we can avoid safety violations and personal injury

Introduction. The article outlines current issues of improving the occupational safety system at enterprises of the Russian Federation. In particular, the problem of occupational risks assessment and organization of their management are considered in detail. The article provides the results
of the comparative analysis of the procedures for the special assessment of work and occupational risks.
The aim of the work is the development of a modern method of occupational safety management with the use of the authors’ model of occupational risk assessment. This problem is solved in the framework of risk matrix analysis in the coordinate system "event probability - consequences of the event". The peculiarity of the model proposed by the authors is the use of the
danger prevention coefficient Кп. This approach allows taking into account the means of protection and thus assessing the levels of risk more reliably.
Materials and Methods. Based on the analysis of extensive factual material on the statistics of industrial accidents, a systematic analytical approach to assessing occupational risk of personnel at small and medium-sized enterprises is proposed. An effective and real model of occupational risk analysis is developed, characterized by the convenience of its implementation in practice.

Results. In the process of carrying out the research, the basic elements of risk assessment methodology are substantiated, including matrix model that allows us to quickly and reliably estimate potential occupational risks of the enterprise personnel at specific workplaces. The developed methodology was tested in small enterprise, which showed satisfactory convergence
with practical materials.
Discussion and Conclusions. The obtained results represent a scientifically substantiated and technically practical method of assessing occupational risk. The introduction of this development at small and medium-sized enterprises will definitely contribute to the improvement of labor protection.

The article analyzes the problems of occupational injuries in the provision of public, personal and social services to the population. From the point
of view of occupational safety this area is practically not studied, so the authors offer an original method of analysis of the state of occupational
injuries with limited initial data. Four forms of statistical reporting on occupational injuries provided by the Federal State Statistics Service are
used as basic information. The results of the analysis indicate a fairly high level of occupational injuries and the need to strengthen occupational
safety in the examined field.

The article considers the impact of the production activities of a specific power engineering facility Gazprom Transgaz Krasnodar Compressor Station Shakhtinskaya on the environment. It offers
measures for more efficient organization of ecologically safe operation of the station. The recommended system will not only reduce the amount of waste, but also allow heat recovery and
significantly energy saving, including the production of hot water.

The paper deals with the main ways of sustainable development strategy of Russia at ecological crisis recovery. The study focuses on the administrative and legal aspect of the problem. The article analyzes changes in environmental legislation for the period from 2013 to 2017. Monitoring of ecological violations in the territory of the Rostov region for the specified period has been conducted. The paper provides numerical evaluation and
comparison of damage to the natural environment
from violations and penalties in administrative responsibility

The paper considers the assessment of air pollution in the cities of the Rostov region. The main source of pollution in cities is motor transport. It
has been revealed that the most polluted air is in the city of Novocherkassk, the least – in Tsimlyansk. The risk of non-specific chronic effects ranged from 0.22 to 0.015 depending on the city

The article considers the influence of the construction of production wells on the oil and gas condensate field, located within the boundaries of the nature reserve of regional importance, on the state of the animal world and its habitat. The authors propose the recommendations to minimize
the negative impact on the wildlife of the reserve
in the construction of new wells and a list of
compensatory measures on the basis of the structured characteristics of the fauna of the reserve, the analysis of the location and technology of construction works, calculations of damage to the animal world. 

The article is devoted to generalization of the known approaches to health risk assessment in large cities adopted in the Russian Federation and based on the study of “dose – effect” dependence
for threshold toxicants, as well as the author's methodology for assessing the environmental comfort of territories. The advantages and disadvantages of the above-mentioned approaches are discussed, scientific and methodological approaches and recommendations to the assessment
of health risk and environmental comfort for the population of large cities of Russia are developed. 

The authors have conducted the factor modeling using data on fire danger, on functional and resource status of fire protection and indicators of social and economic development of rural settlements of the Russian Federation subjects. The factor analysis has revealed a low level of protection from fires in small rural settlements. It is also shown that an increase in the arrival time of the first fire-fighting unit to the place of fire increases
the mortality risk in a fire, and that with the increase in the average distance to the fire department, the fire risk magnitude is increasing. The obtained results will make it possible to develop
measures to reduce fire danger risks in rural settlements of the Russian Federation.