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The presented study was devoted to environmental safety in the context of the implementation of energy transfer programs. Among the main transitions, a conservative, innovative and energy transition is singled out, within the framework of which relevant measures are taken to increase the efficiency of the energy industry. The work analyzed plans for various approaches, as a result, it was concluded that in the event of an energy transition, it is planned to reduce oil and gas consumption by up to 20% and increase the consumption of renewable energy sources. The work revealed that the plans should be implemented taking into account the specifics and characteristics of the energy industries, in connection with which, a model for ensuring the energy transition containing mechanisms for decarburization, decentralization and digitalization was proposed for the Russian Federation. At the end of the study, brief conclusions are presented.

The article is devoted to the issue of calculation of stationary probabilities of states of the system of mass servicing with unreliable equipment, servicing and re-adjustment at the beginning of the production cycle. The article describes functioning both of the main and auxiliary material flow of the logistic system. It is supposed that the incoming flow for processing or orders has a Poisson distribution and the time of breakage of equipment, the time of re-adjustment and the time of servicing have indicative laws of distribution. Equipment is serviced by two crews: maintenance and service. The maintenance crew repairs broken equipment and the orders on the device are not lost but are serviced during the time left. The second crew deals only with servicing works. The article considers one of the possible schemes when the equipment required for completion of the production cycle is sent for servicing. There are no restrictions with respect to the length of the queue. The article finds main characteristics of the above described system, namely: probability that the device is not in working condition and is sent for servicing and re-adjustment. The found probabilities of states of the described system could be used for assessment of expediency of the repair outsourcing at industrial enterprises.

The question of determination of stationary probabilities of the states of the queuing system with an unreliable device, vacation and prophylaxis describing functioning of both basic and auxiliary material stream of the logistic system is considered in the article.В статье рассмотрен вопрос определения стационарных вероятностей состояний системы массового обслуживания с ненадежным прибором, переналадкой и профилактикой, описывающей функционирование как основного, так и вспомогательного материального потока логистической системы.

The question of determination of stationary probabilities of the states of the queuing system with an unreliable device, vacation and prophylaxis describing functioning of both basic and auxiliary material stream of the logistic system is considered in the article.В статье рассмотрен вопрос определения стационарных вероятностей состояний системы массового обслуживания с ненадежным прибором, переналадкой и профилактикой, описывающей функционирование как основного, так и вспомогательного материального потока логистической системы.