With the development of modern technologies, new opportunities appear to optimize the costs of corrosion protection (CP). The reduction in prices for modern magnetite anodes (due to the opening of a fully Russian production by Chemservice) allowed us to develop a new method of their installation without the use of expensive special heavy equipment.
Organizations responsible for the operation of underground pipelines can now repair and install anodes independently and in the shortest possible time. This article presents the results of pilot tests of a new method of installing anodes in various regions of Russia on main pipel ines and gas distribution facilities. 

Epoxidized polybutadienes were synthesized by epoxidation of liquid polybutadiene (LPBD) molecular weights of 1500 and 3000 with performic acid formed in situ by the reaction of formic acid and hydrogen peroxide. The amination reaction of epoxidized polybutadienes w as used to obtain their amine derivatives. In the amination reaction of epoxidized liquid polybutadiene (ELPBD), ZnCl2 was used as a catalyst, organoaluminum compounds and solvents produced by Sigma-Aldrich and Merck, and waste turbine oil T-30.
The structure of LPBD, ELPBD and its amino derivative (AELPBD) was determined on a Bruker Alpha IR Fourier spectrometer (Germany) in the frequency range of 400…4000 sm-1 and NMR spectra were recorded on a Bruker-Fourier spectrometer (300 MHz) at frequencies of 300 M Hz.
The synthesized amine derivatives, in addition to high adhesion to the metal surface, also have a synergistic effect and significantly increase the protective effect of the inhibitor, accelerate solubility in mineral oils and significantly improve the anti-corrosion quality of conservation liquids. Samples of aminated epoxidized polybutadienes tested as part of conservation liquids showed high anticorrosion efficiency in the Q-4 hydro chamber (GOST 9.054-75) for 310…480 days, in sea water for 210…360 days and in 0,001 % sulfuric acid in within 130…260 days.

The effect of alkylphenol sulfuric acid on the corrosion process of St10 steel in the two-phase 0,1 N HCl solution – kerosene system of magnesium, zinc and barium salts, (conventionally indicated as Mg-HГПИ-2, Zn-HГПИ-2 and Ba-HГПИ-2) previously studied on St3 steel samples, was confirmed by gravimetric method. It was determined that, all of the compounds shown in the 25...200 mg/L concentration range significantly weakens the corrosion process of St10 steel in the mentioned two-phase acid system. It is shown that, their effectiveness in analogous conditions does not differ sharply from each other and this is also associated with the fact that the structures of the ions Mg2+, Zn2+, Ba2+ do not differ sharply from each other, as well as with being the same of organic anion, which has a decisive role in the ads orption process. It is also shown, that corrosion characteristics of St10 steel in the shown system are very clos e to each other

The operation of heat exchange equipment is associated with the formation of scale deposits as a result of the crystallization of calcium and magnesium salts. E ffective sediment removal is still a challenge. The paper presents the results of a study that shows that 10% sulfamic acid dissolves the precipitate up to 46% in the PP-1 chemical water treatment (ChWT) heat exchanger tube, while the average corrosion rate of the heat exchanger tube metal is 0,31 g/m2·h. Deposits from the tubes of the PP-1 ChWT heat exchanger were also subjected to dissolution with hydrochloric acid. A kn own method for producing inhibited hydrochloric acid, including the introduction of a nitrogen-containing corrosion inhibitor. Thiourea was used as a nitrogencontaining inhibitor. According to the results of laboratory tests, it was shown that 20% hydrochloric acid with the addition of thiourea 1%, 5%, 10%, 15% and 20% completely dissolves the precipitate, while the corrosion rate of the metal of the heat exchanger tube was 0,685 g/m2·h, 1,17 g/m2·h, 2,12 g/m2·h, 2,76 g/m2·h, 4,79 g/m2·h. It should be noted the negative effect of zinc present in brass on the protective properties of such corrosion inhibitors as urotropine and thiourea, which show good protective effects on pure metals (iron, copper). This is apparently due to its predominant dissolution from the alloy upon contact with acids and further dissolution of the base metal itself. The optimum protective effect of a corrosion inhibitor of 55,2% was shown on a coppe plate immersed in a solution of 5% hydrochloric acid + 100 mg/d m3 of AZ 8104 inhibitor

The reliability of technical products is determined by their resistance to the influence of the external environment, the natural component of which are destructor microorganisms (bacteria, yeast, microscopic fungi, etc.).
The low efficiency of protecting metals from biocorrosion is largely due to insufficient knowledge of all aspects of the damaging effects of microorganisms. There are no quantitative data on the processes of biodamage of equipment elements in real operating conditions. To date, reliable methods for diagnosing and predicting the durability of metals and their structures under conditions of interaction with wildlife have not been developed.
In this work, an attempt was made to explain the role of biofilms of microscopic fungi as the important factor in the mycological corrosion of metals. The formation and accumulation of a corrosive medium is possible as a result of the metabolic processes of microscopic fungi that form a biofilm. A detailed determination of the mechanism of biocorrosion of metals is a complex scientific problem.
The purpose of this article is to analyze experimental data on the study of aerobic biocorrosion of metals mediated by the metabolic activity of biofilms of bacteria and microscopic fungi