A.A. Alekseev, Cand. Sci. (Eng.), General Director, email@example.com A.F. Kolinichenko, Dr. Sci. (Eng.), Adviser OOO «NTTs «Prombezopasnost — Orenburg», Orenburg, Russia
The state policy of the past years in the field of design and construction was based on metal saving and all-round use of the reinforced concrete structures, methods of which protection from the effects of aggressive media have not been finally studied. Whereas the provisions of the normative documents of that time were limited mainly to the use of secondary methods of protection. As time has shown, the design service life of such structues is not maintained, which puts the enterprises in high-risk conditions. First of all it is related to productions where technologies are used that form aggressive gaseous media. Such generalizations are made by the authors based on the expert opinions received at many objects of the Russian Federation, at AO Angarsk Petrochemical Company in particular.
It is noted in the article that the scientific achievements of the recent years in the field of construction have brought to the forefront the primary measures of protection of the reinforced concrete and metal structures against the effects of aggressive media, which, together with the secondary ones, make it possible to increase the service life of the objects. However, such measures are impossible on the previously constructed objects. Therefore, the authors, based on their own experience of work in this area, made specific proposals. Based on the fact, that the corrosion of structures on the territory of industrial enterprises is uneven, it is advisable to carry out expertise of industrial safety of the buildings and structures not after the expiry of the scheduled time in full scope of the entire enterprise, but on the actual condition of the objects recorded during their periodic or extraordinary inspections. This will allow to establish the priority of the first and foremost facilities for conducting expertise, the adoption of the relevant repair and restoration measures and, accordingly, to reduce the financial burden on the enterprise. It is required to draw Rostechnadzor attention to the incorrectness of the directive instructions with regard to the need for conducting of industrial safety expertise — they do not fully reflect the required prerequisites for this. It is necessary to recommend to the owners of hazardous production facilities to carry out repair and restoration work using the latest achievements of science and practice, in particular with the use of polymer composite materials, thixotropic compositions of dry mixes, adhesive compounds, etc.
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