Abstract
In this article, based on determining strain parameters such as the equivalent (von Mises) strain and average strain, calculations of the depth growth rate of fatigue and stress-corrosion cracks as well as the operating life of the pipeline sections are performed. The results are presented as the operating time to failure and cycles number to failure by loading internal pressure. The obtained graphs of the dependence of the crack growth rate, crack depth, equivalent (von Mises) strain, average strain in the defective zone on the pipeline operation time are presented. During computational experiments for the main pipeline the destructive depth of defects, the residual operating life of the pipeline with cracks having different initial depth and length were determined.
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