STUDY OF STRESS AND DYNAMIC RESPONSE OF THE PIPE SYSTEMS IN PETROCHEMICAL INDUSTRY

Abstract

This study focuses on the stress analysis, displacement evaluation, static and dynamic effects in petrochemical pipelines. The goal is to ensure safe and efficient operation under various loading conditions, including water hammer. The study begins with a detailed static stress analysis, considering factors such as temperature, pressure, pipe material, and dimensions. Advanced software is used to model the pipeline structure, evaluating stress levels, strains, and displacements. Displacement evaluation and expansion loop optimization techniques are applied to minimize thermal expansion effects. Temperature variations and expansion loop movements are analyzed, reducing displacements and associated stresses. Optimal design strategies and support systems are developed for thermal expansion conditions. Dynamic analysis specifically addresses water hammer effects. A selected pipeline segment near the main transfer valve (MTV) and main tank is examined using time-series simulations. Insights into dynamic behavior aid in optimizing design and operation to mitigate water hammer effects and ensure system robustness. Real-life scenarios of a Cheniere LNG Terminal are conducted on 3D modeling and stress analysis of pipeline structure. The stress analysis using the 3D modeling helps make the design and operation better by reducing stress. Recommendations are made for additional support at specific nodes in the pipeline to enhance long-term reliability, designing expansion loops to decrease displacement of thermal stress in the system, and considering both static and dynamic loading conditions in the pipeline system. This study contributes to a comprehensive understanding of stress analysis, displacement evaluation, and water hammer effects in petrochemical pipelines. It enables proactive issue identification, optimized maintenance schedules, and reduced downtime. By combining static and dynamic analyses, this study provides valuable guidance for engineers and operators. It aids in optimizing pipeline design and operation, ensuring safe performance and minimizing disruptions. Lastly, the study calls for employing advanced modeling and analysis which shows to enhance understanding of pipeline behavior, facilitating informed decision-making for reliable and long-lasting systems.