Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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TO CALCULATING THE RESIDUAL RESOURCE OF TUBES FOR HEAT NETWORKS AND HOT WATER NETWORKS

Azarov V.N. 1 Gevlich S.O. 2 Vasiliev E.G. 3 Vasiliev K.A. 2 Mirzonov M.V. 2 Sidyakin P.A. 4 Nesterchuk A.V. 4 Aljohina I.S. 4
1 Volgograd State University of Architecture and Civil Engineering (VSUACE)
2 OOO «Jekspertiza»
3 The lower Volga Department of Rostekhnadzor
4 North-Caucasus Federal University
From January 1, 2007, thermal networks have become the object of supervision. Accordingly, from this moment on, these objects became subject to all requirements of Rostekhnadzor in the order of exploitation, design, industrial safety expertise, etc. In the present time, due to changes in Federal legislation in the field of industrial safety, these objects are referred to III class of hazard. Technical diagnosis and examination of industrial safety heat networks and HWN (hot water network) tubes shows that the dominant mechanism of the damage limit state is the ulcer corrosion. The technique of evaluation of residual resource of pipelines based on calculation of the strength of the object in the section, containing the hub stresses that represents as corrosive ulcer. The concrete example of the calculation of the residual resource of heat supply pipeline is provided. It is shown that the evaluation of ulcerous corrosion reduces the estimated residual resource of more than doubled in comparison with the standard methodology based on thinning the walls on the mechanism of general corrosion.