The main mechanisms of destruction of internal anticorrosive polymer coatings (IACPC) of the inner surface of tubing and fielding pipes are review in the article. They are divide into decompression peeling, substrate destruction under the corrosion of and natural aging of the polymeric basis. A critical analysis of the existing standards for the testing of internal anticorrosive coatings was made. The carrying out test on these documents does not allow obtaining the destructions identical to those found during the exploitation of pipelines. Investigations on the selection of optimal regimes of autoclave tests and the methodology for conduct research are describe. A comparison for the results of laboratory and experimental field tests of the coatings presented.

A classification of basic reasons and destruction mechanisms in housing protective coatings of submerged electro-motors (SEM) is presented. The classification presented is based on the results of the visual inspection, a definition of the character and localization of damages, and also the results of micro-structural researches. The investigation results obtained will allow carrying out with a high degree of reliability a primary identification of destruction reasons in the metalized coating of SEM housings.

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