Abstract. Up to forty thousand accidents occur annually with underground pipelines due to corrosion. The comparison of the methods for assessing the quality of anti-corrosion coating is provided. It is proposed to use the device to be tied-in to existing pipeline which has a higher functionality in comparison with other types of the devices due to the possibility of tie-in to the pipelines with different diameters. The existing technologies and applied materials allow us to organize industrial production of the proposed device. IntroductionBy the beginning of 2010, the share of oil pipelines with more than 20 years old was 73 % and more than 30 years -40,6 %. The main reason for failure of oil and gas structures in the corrosion factor. In Russia 40-50% of machines and equipment working in aggressive environments and 30% in slightly aggressive, and only about 10% do not require an active corrosion protection. On the infield pipelines of oil, water and gas 95 percent of the failures falls on in-line inspection and external corrosion [1][2][3].The analysis of statistical data showed that the intensity of accidents on trunk pipelines has a pronounced regional character, i.e. not only the overall performance of scientific and technological progress in the industry, and a number of local factors, features of construction and operation of a specific area, well-developed industrial and transport infrastructure, total economic activity in the region. The main danger emergency depressurization of gas pipelines are:1. Sections of the pipeline after the compressor station (5 km) -due to non-stationary dynamic loads;2. The gas pipeline sections on the connection nodes; 3. Areas near settlements and areas with high levels of anthropogenic activity (construction areas, intersections with roads and railways).The manifestation of accidents on gas pipelines, representing the linear structures has a pronounced territorial character. Regional manifestation of accidents is due to the difference in various regions of the geotechnical characteristics of slopes, condition of the road network, the overall level of industrial and agricultural development. The analysis showed that the corrosion rate North of the 60th parallel in natural soil conditions due to the relatively low temperatures of 15-20 times higher than, for example, in parts of Central Asia. Due to the influence of climatic factors in conjunction with regional characteristics corrosiveness of soils, the failure rate in the Northern zone in 1.4 times, and in the South is 16 times higher than the value for the middle band.
The results of studies on the concentration of fine dust concentrations during construction work are presented. A method developed by the authors for modeling the dynamics of air flow and the zone of distribution of impurities, taking into account external non-stationary factors during construction work on the basis of a specialized GIS application, is considered. It is proposed to use in contaminated areas after construction and repair and emergency work of a dust collector, which is aimed at reducing pollution. The main element of the dust-harvesting machine is designed for cleaning hard surfaces, namely from debris, sand and gravel masses, dust particles, estimates and liquid waste. The use of solar collectors in the dust collecting unit allows the dust collecting machine to have a long operating mode, it does not require additional energy resources when the machine is running.
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