Influence of multiple hydraulic shocks of oil flow on safe operation of pipeline transport

Finite element modeling of the stress-strain state of the linear section of the pipeline under non-stationary force load was carried out to determine its residual life. Calculations were performed for the X60 pipe steel of an oil pipeline with an internal surface crack under turbulent oil flow and hydraulic shock. It was established that hydraulic shocks reduce the residual life of the pipe almost 2 times compared to laminar oil flow. Therefore, they should be taken into account to guarantee the reliable operation of pipeline transport.