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The algorithms and modeling program allowing estimating indicators of financial technological risk, based on a random process of dynamic risk.

Article is devoted to production and occupational exposure to «biological factor» for workers оf railway transport. Purpose - improving the system of occupational safety in railway transport under the influence of workers pathogenic organisms. To identify gaps in the system of assessment «biological factor» has been studied Russian normative documentation for a special assessment of working conditions and carried out long-term work on hygienic assessment of working conditions. The article defines the term «biological factor», justify the need for of risk assessment of the harmful factor, expand the list of sources and professional group of railway workers potentially exposed to «biological factor». In this article presents a device for protection and prophylaxis railway workers from biological factor. The principle of operation of the device is based on the integrated use of methods of ultrasonic treatment and ionization to disinfect the indoor air of railway stations, bus stations, subway stations. According to the results of studying the Russian regulatory documentation in the transportation of dangerous goods by railway, identified the main problems and their solutions, in terms of biological safety: formulated the term «biologically dangerous goods»; the necessity of creating a class or sub-class «biologically dangerous goods» and its implementation in the existing rules; developed a simple list of «biologically dangerous goods»; the possibility of the impact of these goods on railway workers.

The article discusses the issues of improving safety when performing production work near railway tracks, which are associated with a high level of risk for personnel. The purpose of this work is to develop and substantiate a promising system for notifying work crews about the approach of rolling stock, which can increase the effectiveness of safety measures at railway infrastructure facilities. The methodological basis of the study was the analysis of the causes of accidents related to the shortcomings of existing warning systems, as well as modeling the signal generated by an electromagnetic sensor when the wheel crest passes over it. To implement the system, it is proposed to use the LoRaWAN network and LoRa radio modules combined with Arduino microcontrollers. As part of the research, a structural diagram of the system and a working layout have been developed, including transmitting devices with a composition detection sensor and receiving devices integrated into workers' signal vests. As a result, a mathematical model of the signal generated by a change in the magnetic flux caused by the wheel approaching the sensor has been obtained. The dependence of the magnitude of the electromotive force on the position of the wheel relative to the coil is proved. Graphs of the dependence of the magnetic flux and the induced signal on the transit coordinate are constructed. The proposed system can be used as the main or auxiliary means of notification during repair and other work near the tracks. The conclusion is made about the prospects of the development for implementation in the industrial safety system of Russian Railways. The proposed system has high potential efficiency, can function independently and independently of weather conditions, and also serve as a reliable complement to the work of alarm systems. The introduction of this technology can significantly reduce occupational injuries at railway infrastructure facilities.

The article provides the correlation analysis of accident type influence as quality factorial characteristic on industrial injuries statistic index in the permanent way division of the Kuibyshev railway during some years. By means of mathematical calculations statistical correlation study of characteristics and values has made, taking into account the degree of severity of workers’ health damage affected by industrial accidents. The hypothesis staged within the framework of Kuibyshev Railway permanent way division has confirmed and the degree of mutual contingency of accident types and their quantity has assessed. It is shown that the practical significance of the correlation analysis results on the formation and (or) adjustment of preventive measures to reduce the levels of occupational hazard and prevention of industrial injuries

In article results of making design for system of the dangerous wastes transport safety by railway is considered. Fundamental elements of safety system are discussed. Recommendations on formation of the dangerous wastes transport safety program are shown.

The influence of systematic failures to the functional safety of automated control systems of hazardous technological processes is considered. It is shown that stability ensuring of the process control system to systematic failures is an actual task for today. Approaches to increase the robustness to systematic failures recommended by IEC 61508 are presented. Special attention is paid to methods based on diversion. The functional diversity and technology diversity have been revealed in detail. Examples of using diversification in railway automation systems are given. The main problems of using diversification to increase resistance to systematic failures are formulated. The main advantages of using diversification are increased resistance to systematic failures and reduced risk of dangerous failures through the usage of diversified protection methods at the functional levels of the APCS. The disadvantages of using diversification are a significant increase in the costs of developing and automated process control system maintenance, the difficulty of confirming the different behavior of diversified channels in case of systematic failures, and the lack of an effective method to assessing the sufficiency of the obtained diversification for a given level of safety integrity.