Monitoring of the ecological state of the city lake of Chita

Introduction. The paper presents the results of the studies on assessing the quality of the aquatic ecosystem of a lake located within the city. The European perch (Perca fluviatilis L.) and the Gibel carp (Carassius gibelio) were used as an indicator for determining the quality of the aquatic ecosystem by the method of fluctuating asymmetry. Problem Statement. The aim of the work was to conduct monitoring with the subsequent assessment of the quality of the ecosystem of the city lake using the method of fluctuating asymmetry (hereinafter FA). Theoretical and Practical Part. The quality of the urban lake aquatic ecosystem was assessed using the FA method (indicators: the European perch (Perca fluviatilis L.), 1758 and the Gibel carp (Carassius auratus Bloch), 1783). To identify the reasons for the high PFA values, a chemical analysis (in an accredited laboratory) of the gills of the Gibel carp for heavy metals was performed. Conclusions. As a result of the research, the FA indicators values for these indicators were obtained. According to the results of a laboratory study of the content of heavy metals in the gill arches of the Gibel carp, an excess of the maximum permissible concentration of 8 out of 10 analyzed elements was revealed. It has been established that the ecosystem of the city lake Kenon is experiencing a significant anthropogenic load (5 points — the critical quality of the aquatic environment) and it continues to increase towards the deterioration of the habitat.

Express method of assessment of compliance of the object of supervision with fire safety requirements

Introduction. The paper considers the new requirements for the activities of the state fire supervision bodies. The ways of solving the problems arising during the implementation of these innovations are given. One of such solutions is the developed by the authors algorithm of the express method for assessing the compliance of the object of supervision with fire safety requirements. The article analyzes the work of inspectors of the state fire supervision during inspections of low-rise retail facilities of small area, taking into account the time spent on them, and the work of the inspector using a new express method of conducting inspections. Problem Statement. The purpose of the study is to increase the efficiency of managerial decision-making in ensuring fire safety based on the criterion of "fire risk", taking into account the minimum fire safety requirements determined by the calculation. Conclusions. The developed algorithm for supporting managerial decision-making on the compliance of the protection of commercial facilities with fire safety requirements will allow inspectors of the state fire supervision during inspections to assess the existence of a threat to human life and health and decide on further actions depending on the presence or absence of this threat.

Dependence of death and injury of people in fires on the duration of fires

Introduction. The effectiveness of the actions of the fire protection units depends on their readiness for action, that is, on the state of the forces and means of the station and the ability to perform the main task within the existing tactical capabilities. Problem Statement. When developing mathematical models of the operational activities of the fire department, its effectiveness and the assessment of the readiness of fire protection units to extinguish fires, it is important to study the dependence of the death of people in fires on the duration of the fire. This study is devoted to this task. Theoretical Part. The distribution of fires in the Russian Federation for 2016-2020 by their duration and the dependence of deaths and injuries of people in fires, as well as their ratio to the duration of fires in the Russian Federation for 2016-2020, is studied. It is shown that the average duration of the fire during the studied period was 26 minutes, the median value of the distribution was 18 minutes. The dependences of deaths and injuries of people in fires on the duration of fires are approximated by a logarithmic function. When the duration of the fire is up to 26 minutes. the ratio of the number of people injured in fires to those killed decreases exponentially, but remains stable in the rest of the time range. Conclusions. It is concluded that it is necessary to increase the readiness of the fire department for actions to extinguish fires and rescue people, which includes the development of an information and analytical model of the operational activities of the fire department.

Selection of a method for calculating heat gain from solar radiation to determine the load on the climate system of the cabin of a mobile car

Introduction. The article analyzes and selects the most rational methods for calculating the heat gain from solar radiation. The correct calculation of this component of the heat balance allows you to correctly determine the power of the projected cabin climate system, which will ensure optimal working conditions at the workplace of mobile car operators. Problem Statement. The objective of this study is to analyze and select a rational method for calculating heat gain from solar radiation for the correct determination of the thermal load on the climate system of the cabin of a mobile car. Theoretical Part. To implement the task, the most common methods for calculating solar radiation were described and analyzed in detail and the most accurate ones were recommended. Conclusions. The more labor-intensive method of V.N. Bogoslovskiy (taking into account the time of day) can be recommended for automated calculations in Excel, and the method of P.Y. Gamburg (taking into account the sides of the horizon) — for comparative estimated engineering calculations. When conducting "in-depth" model calculations and accounting for solar radiation, the ASHRAE method is explicitly suitable, which has two important advantages: it takes into account the solar factor in relation to a specific type of glazing and is adapted for automated calculations in ANSYS FLUENT.

Analysis of occupational injuries at enterprises for processing and canning meat and meat food products

Introduction. The article considers the problems and provides the analysis of industrial injuries at meat and meat food products processing and canning enterprises, which have a certain sectoral specificity that affects the formation of working conditions and contributes to the emergence of industrial injuries. Problem Statement. The aim of this study is to analyze occupational injuries, their causes and to propose appropriate measures to prevent injuries. Theoretical Part. The initial information is the data of the statistical reporting of the Federal State Statistics Service on industrial casualties by type of activity – Processing and canning of meat and meat food products. Conclusions. The results of the analysis show the existence of a problem of occupational injuries and the need to introduce and implement a number of measures aimed at improving working conditions and improving safety at work in order to prevent occupational injuries.

On the issue of organizational problems of state fire supervision in connection with the entering into force of the federal law on state control (supervision) and municipal control in the Russian Federation

Introduction. Due to the updating of the legislative framework, the possibility of introducing the so-called "seamless" interdepartmental processes in the field of fire control and supervision is considered. The paper shows how insufficiently well-regulated actions of departments can become a factor that reduces the efficiency of work in this area and hinders its development. The importance of Federal Law No. 248-FZ of July 31, 2020 "On State Control (Supervision) and Municipal Control in the Russian Federation" was noted. At the same time, significant difficulties of its practical application are recognized. With references to the sources, it is shown that, addressing this problem, scientists demonstrate either a global, enlarged approach, or, conversely, study particular cases within the borders of one region, in relation to a specific group of objects of fire control and supervision. The relevance of the presented work lies in the fact that the authors offer an adequate solution to universal organizational problems. Problem Statement. The starting point in solving the tasks of this scientific work is the study of the text of Federal Law No. 248-FZ of July 31, 2020 "On State Control (Supervision) and Municipal Control in the Russian Federation". From the point of view of law enforcement practice, the authors had to evaluate innovations in the activities of the state fire supervision bodies of the Ministry of Emergency Situations of Russia, identify weaknesses if possible, make arguments in favor of organizational and, in particular, communication processes, identify ways to solve the problems. Theoretical Part. The new document is considered as an element of the evolutionary process of state policy in the field of monitoring the compliance with mandatory requirements, including in the field of fire safety. The main imbalances that can potentially reduce the efficiency of the relevant departments of the Ministry of Emergency Situations have been identified. Thus, the Regulation on Fire Safety provides for the collection, clarification and annual updating of accounting information about the objects of supervision. At the same time, only the names of procedures are given in the document. There is no scheme of actions that links the object of supervision with such features of the subject (official) as: knowledge, experience, workload, Internet skills, computer or digital technology, technical and organizational availability of information resources. According to the statistics, the urgent need for appropriate adequate solutions is dictated by objective reasons. Constructive and relatively easy-to-implement measures to overcome the identified imbalances are indicated. Conclusions. The results of scientific work presented in this article demonstrate the direction of further improvement of the professional activities of specialists in fire control and supervision, as well as the department as a whole. The results of the research suggest that at the present stage in Russia (and, in particular, in the Rostov region) the information base is sufficient to improve departmental processes. Two factors should be recognized as the main weaknesses of the system. This is clearly insufficient digitalization of departments and the lack of high-quality communications between departments of various levels and profiles.

Organizational and managerial issues of improving the fire safety of the protected objects

Introduction. The paper considers the issues of modernization in the field of fire safety. It is noted that insufficient attention is paid to the tasks of fire safety management of the protected objects, and this negatively affects the overall level of security in the regions. The most relevant and effective method of improving the fire safety of the protected objects is the active introduction of robotics and artificial intelligence. Problem Statement. The objectives of this study are to develop proposals to improve fire prevention and fire protection systems, as well as to create a set of measures aimed at ensuring fire safety. Theoretical Part. The works of scientists on the topic of this study are used as basic information. The system of fire safety organization, legal regulation and state measures in the field of fire safety have been studied. Conclusions. The results of the study can be used in practice to ensure the fire safety of the protected objects, as well as for further scientific research.

On probabilistic-physical and entropy approaches to combustion processes and determination of fire hazard

Introduction. The article provides an overview of the existing approaches to solving the problem of combustion of substances and materials, for their adequacy in determining their fire hazard of products and objects. The relevance of the work is due to the need to move from latent forms in determining the fire hazard of materials and products made from them (degrees of fire resistance, flammability groups, groups of the effectiveness of fire retardant coatings, etc.) to analytical forms describing the processes in the combustion theory. Problem statement. The task of the research is to determine the relationship between the theory of combustion of substances and materials and to assess their fire hazard in natural and man-made systems. Theoretical part. The system analysis of solutions to the combustion theory problems is performed. Its results became the basis of probabilistic-physical and entropy approaches, as well as proposals for changing standards designed to provide protection from fires. Conclusions. The results of the study showed the need to revise empirical approaches in assessing the fire hazard of materials and products made from them, which includes using thermoanalytic and acoustic methods and means.

Comparative analysis of the impact of objects of traditional and alternative energy on the environment

Introduction. Active withdrawal of energy raw materials from the subsoil, as well as technogenic impact from energy sources based on traditional fuel, lead to irreversible environmental consequences. To minimize this impact, it is necessary to start from two main conditions: the search for alternative energy sources and the improvement of the existing ones. Problem Statement. The objective of this study is a comparative analysis of energy facilities in order to identify the plant that has the greatest negative impact on the environment. Theoretical part. The comparative analysis of various energy production systems reflects the ecological and economic components of each. For example, a thermal power plant (TPP), a nuclear power plant (NPP) and a wind power plant (WPP) are considered. The negative impact on the environment is mainly exerted on the atmospheric air, in connection with which the data on the amount of pollutants are considered. Also, a modified Leopold matrix was constructed for an expert assessment of the mentioned stations. Conclusions. The results of the analysis show that among the considered power plants, the wind power plant is the most environmentally friendly and favorable for the health of the population.

Development of technique of remote spectral sensing of technogenically loaded territories

Introduction. The article considers the problem of monitoring technologically loaded landscapes. To solve it, the authors proposed an innovative method for studying the chemical composition of objects using direct spectral sensing means. Problem Statement. The objective of this study is to consider the possibility of using spectral sensing to control the composition of soils in technogenically loaded territories. Practical Part. To confirm the hypothesis that observing changes in the parameters of reflection spectra in non-selective areas will make it possible to establish the presence of basic biogenic macroelements for plants in the soil and evaluate its fertility, or determine the degree of contamination of the territory, a laboratory experiment was conducted using modern spectral equipment and multidimensional data calibration was performed. Conclusion. The results of the analysis show the fundamental possibility of using spectral sensing in the monitoring of technogenically loaded territories using methods of multidimensional data analysis.