STRESS CORROSION CRACKING FAILURE DETECTION APROACH USING FINITE ELEMENT METHOD

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STRESS CORROSION CRACKING FAILURE DETECTION APROACH USING FINITE ELEMENT METHOD

Stress Corrosion Cracking (SCC) is a major issue for pipeline transmission and process facilities in oil and gas industries. More than 30% failure frequency caused by corrosion which will bring  significant impact on maintenance cost and production capacity.  Lifecycle of SCC growth should be monitored and controlled to predict failure. Using Finite Element Method to calculate local stress in pipeline geometry, SCC can be measured since the very first time that the initial crack  happened. Projecting actual surface of corrosion and advance technique of modelling are also needed to increase the accuracy of simulation, instead of only using simplified profile and conventional meshing technique in pre-processing sequence. This study is trying to explain the measurement of growth stress which happen in corroded pipeline caused by the mechanical aspect such as internal pressure . The conclusion of this study is to asses and measure potential failure of SCC. Knowing the potential failure of SCC will be a critical input for operation and design feasibility.

 

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