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More than 30 % of all breakdowns in the oil and gas industry fall at technological pipelines. Technological pipelines depressurization is often accompanied by hydrocarbons release, which can lead to explosions and fires. Currently, the correspondence assessment of oil and gas production technological pipelines to industrial safety requirements is carried out using traditional non-destructive testing methods. These methods allow to detect and measure the existing developed defects parameters. In the concentration areas of the mechanical stress the actual stress can reach the yield point and even exceed it, in these areas of some favorable conditions for the origin and development of defects in the structure of the metal are appeared. Therefore, there is some need to identify some defects at an early stage of their development, in the «pre-

ESTIMATION OF TECHNICAL CONDITION AND RESOURCE OF TECHNOLOGICAL PIPELINES SAFE OPERATION BASED ON ELECTROMAGNETIC-ACOUSTIC EFFECT