Corrosion of steel underground pipelines significantly reduces the service life, leading them to an emergency condition, in which further operation is impossible. The main methods of protecting such pipelines are insulating coatings and electrochemical protection.
Determination of the optimal operating parameters of the electrochemical protection system allows to increase the service life of protected objects, due to a decrease in the load on working objects. These approaches are mainly aimed at reducing energy consumption by determining their optimal output parameters of electrochemical protection equipment, subject to compliance with the requirements of RD for permissible values of the protective potential. However, optimal control algorithms do not directly take into account the actual technical state of the system and cannot provide information about its reliability.
The average life of most existing pipelines is more than 20 years. The actual corrosion protection characteristics of such pipelines are significantly reduced in comparison with the initial. In view of this, there is a need to determine the reliability of the electrochemical protection system. Proposed methods for determining and evaluating the reliability indicators of electrochemical protection systems are aimed at building Markov models of the reliability of the object under study and determining it s availability factor.
The implementation of optimal control algorithms in conjunction with methods for assessing the reliability of electrochemical protection systems can make it possible to determine the time of trouble-free operation and identify the most “vulnerable” elements of the system.

The article presents the results of nitration reactions of α-olefins in a mixture of orthophosphoric and nitric acids. The results of carrying out the reaction under various reaction conditions are presented. The results of analyzes of the obtained nitro compounds based on the structure of decene-1 nitro derivatives are shown. Also, the results of tests obtained for nitro compounds as inhibitory components in the mineral oil I-40 in various aggressive environments, namely in a hydrochamber, in a 0,001% solution of H2SO4, in sea water, as well as test results for the quality of conservation liquids of the mixture are given obtained unsaturated nitro compounds with monoethanolamide. under the same conditions.

This article presents the results of corrosion studies of pipe steel 17G1S in oil with an allowable amount of bottom water (according to GOST R 51858-2002, MOD и ST RK 1347-2005) on a model laboratory circulating plant. For the study, 5 types of commercial oil were used, as well as bottom water (from process of final separation of oil at stations for the preparation of used types of oil). According to the results of analysis of the physicochemical properties of samples, corrosive components were determined both in oil (sulfur, mercaptans and chloride salts) and in bottom water (in the form of chloride ions, sulfate ions). Based on the obtained data on the corrosion rate of coupons made of steel 17Г1С, it was defined that the maximum allowable amount of aqueous phase (with aggressive components dissolved in it) contained in commercial oil (according to standards), increase the corrosion rate by an average of 5…12 times, compared with oil containing trace amounts of water.

Electroless plating of Ni-Mo-P alloy coatings is described from a solution containing sodium pyrophosphate and ammonium chloride as ligands. Application of these ligands allowed using relatively large sodium molybdate concentrations in the solution (8…16 mM), while the high electroless plating rate (up to 20 μm/h) was preserved and semibright coatings were obtained. Depending on the sodium molybdate concentration in the solution, Ni-Mo-P alloys contained 3.5…7.4 at.% of molybdenum in the metallic state. Phosphorus was included into the alloy in the form of nickel phosphide NiP. According to the XRD data. the Ni-Mo-P coatings had a nanocrystalline structure with the coherent scattering region size of 25…34 nm.

At present, the certification system for the fuel and energy complex «TEKSERT» TsNIIKS is one of the most popular certification systems operating in Russia. Created in 1997 by the Ministry of Fuel and Energy of the Russian Federation, the Certification System, after a series of reorganizations, has turned from a narrow departmental system into a multidisciplinary and multifunctional system that performs all types of physicalchemical, physical-mechanical analyzes, examinations, studies of equipment, instruments and materials. The system executes and issues the certificates for the products of enterprises of the fuel and energy complex and industry, as well as for imported industrial production.