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All gas fields go through four periods of their life cycle with their technological scheme changes. The engineering of electricity supply system for gas fields in West Siberia was performed without taking into account the final stage of their life cycle. To extend the period of profitability of low-pressure Cenomanian gas at the final stage of the life cycle an energy-intensive technology of gas compression distribution with usage of mobile compressor units (MCU) is implemented. The implementation of this technology in the gas fields requires the construction of a new electricity supply system or the reconstruction of the entire existing one. The objective of the paper is to assess the dynamics of electric loads of gas fields, considering the entire life cycle. The average annual calculated electric load for each life cycle period for active fields in West Siberia for 2019 is determined. The coefficient of increase in electric load is calculated. The tasks are solved using the empirical method (measurement, comparison) and the experimental-theoretical method (analysis and synthesis). The analysis shows that during the life cycle of a gas field, when the well outcrop and average reservoir pressure decrease over time, the calculated electrical load increases in many times.

Construction in the northern construction-climatic zone associated with the solution of complex engineering problems. This is primarily the monitoring of the temperature state of the cryolithozone, which depends on a combination of climatic, engineering-geological, hydrogeological, environmental and technogenic factors. This is even more relevant in connection with the fact of degradation of permafrost. Generalized and classified technical solutions for the construction of foundations of buildings and structures built on the I and II principles. At the same time, technical audit of design solutions and scientific support during the entire life cycle of objects is required. In order to improve and implement the progressive direction in foundation construction, variants of design solutions for self-cooling freestanding columnar foundations of factory production are proposed and the work schedule is detailed.

Along with the comprehensive promotion of flue gas ultra-low emission reconstruction in coal-fired power plants, the stability, reliability and economic efficiency of SCR denitrification facility have emerged. SCR catalyst entire life-cycle management is the key to solving the problem. Given the present situation of the catalyst market, operation and maintenance, third-party service, a SCR catalyst entire life-cycle management technology have been proposed, including catalyst supply, quality control, operation and maintenance, effect optimization, life management and scrap disposal in the entire life-cycle of catalyst. By clarifying the accountability units at different stages, implementing corresponding quality control, operation and maintenance and evaluation and optimization technology, demonstration application suggest that the management technology could give full play to the professional expertise of participant companies, make the denitrification facility stable, reliable and economical, and bring obvious environmental and economic benefit.

Highway infrastructure emits large quantities of carbon dioxide over their entire life cycle including emission from production of raw materials and also emission from construction, operation, maintenance, and rehabilitation of the roads. The past emission trends of carbon dioxide from these sectors are investigated through their sources while mitigation and abatement strategies are suggested. This paper brings together, for the first time, a systematic review of the carbon footprint calculator of 21 case study highway from 8 different countries were investigated. This review focuses on method for calculate carbon footprint of highway development, through the synthesis of the overall outcomes of these studies, to identify whether using excel tool or Life Cycle Assessment (LCA) software achieve better performance and easier to calculate the emission from highway development. It is observed that using excel tool is better to calculate and analysis the carbon footprint from many sources and stage compare than calculate using LCA software. Therefore, understanding the relationships between methods for calculate carbon footprint life cycle energy consumption and GHG emissions are critically important for highway agencies to evaluate their annual greenhouse gas emission reports. Chang C.d