A method for estimating the maximum allowable length of service in high noise conditions based on the calculation of the allowable working dose when working in working conditions with exceeding hygienic standards, which is based on the “equal energy” rule applicable to any factor of the each working environment is presented. A method of calculating the dose of the permissible noise level during the entire seniority LCT is proposed, on the assumption of threshold permissible values of the sound level (equivalent sound level), which allows implementing an occupational safety management strategy, both through organizational measures (transfer to areas with acceptable noise levels) and the development of measures to improve working conditions and safety. The dose principle of hygienic rationing allows us to estimate the actual load on the employee’s sensory systems and the required number of days of rest or work with reduced noise levels. To solve this problem, in the presented methodology, analytical methods that are proposed, allows to count the number of days of rest (or work with a reduced dose of noise) during a shift, month or year depending on the value of the equivalent noise level LA and the duration of its impact.

Exploration of the Arctic Shelf is a strategic objective of the sustainable development of our country, taking into account the use of hydrocarbon potential of this territory. At the same time there is a real ecological threat to violate the integrity of biodiversity in the region without implementing the environmental policy of protection of the Arctic Shelf of the Russian Federation. The state strategy until 2025 formulated strategic policy objectives: preserving and restoring the natural environment, ensuring environmental quality, ensuring human well-being and using economic development, eliminating accumulated environmental damage as a result of intensifying economic and industrial activities. A complex solution of these tasks is, on the one hand, the creation of specially protected natural territories, and on the other, the development of an environmental monitoring system. The status of specially protected natural territories allows minimizing industrial activities in a given area, reducing the vulnerability of natural ecosystems to anthropogenic influences. The program of environmental monitoring is a real tool that allows for the collection and analysis of data on the study of environmental reactions to anthropogenic impact, followed by monitoring the state of the biosphere for a development policy for this region dictated the need to develop an environmental monitoring system taking into account its particular features in these latitudes. The proposed system is considered on the example of the Russian Arctic National Park and can be extended to other specially protected natural territories of the Russian Federation. Until now, the lack of an environmental control system in the shelf areas of the Arctic North of Russia and the need for a development policy for this region dictated the need to develop an environmental monitoring system taking into account its particular features in these latitudes. The proposed system is considered on the example of the Russian Arctic National Park and can be extended to other specially protected natural territories of the Russian Federation.

The widespread use of fuel oil stimulates the development of fuel additives to improve its technological properties. In this work, the parameters of the explosiveness of the technology for obtaining an additive based on the use of industrial alcohols are estimated. The schemes of development of typical scenarios of accidents have been developed, zones of destruction of buildings and structures and zones of damage by thermal radiation from the flame boundary have been determined for the accepted conditions. The research results can be used in the design and implementation of the technology for producing fuel oil additives based on flammable liquids.

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The features of the physical meaning of the thermal coefficient useful action (CUA) ηt as a criterion for the efficiency of reversible direct circular processes are considered. In particular, we demonstrate that accounting for all energy costs when applying ηt is made by adopting a number of assumptions by default. In order to expand the possibilities for conducting thermodynamic assessments of the efficiency of various thermal power plants, a new criterion of efficiency Ku is proposed as a coefficient that takes into account in a comparable form all types of energy spent on the implementation of the cycle. In determining the criterion Ku, useful effect obtained from the implementation of a direct circular process is considered to be the specific work of the expansion of the working fluid in the cycle. Such work, in particular, can be the work of steam expansion in the turbine. The total energy cost is the sum of the specific heat supplied to the working body in a circular process and the specific mechanical work spent in the cycle on compression and pressure increase of the working body. In particular, the work is taken into account in a comparable form-taking into account the heat that was spent on its production. The analysis of the Ku criterion is carried out. As a result of the analysis we have established that at transition from the general physical model of reception of specific work of expansion in direct circular process for which Ku criterion can be applied, to the special case assuming a number of assumptions, Ku criterion can become equal to thermal coefficient useful action of a cycle. Using the Ku criterion, the efficiency of Carnot and Rankine cycles on a saturated pair is compared. The Ku score showed that the Rankine cycle was more efficient.