SUBAN 3 GAS PIPELINE ANALYSIS USING STRAIN-BASED DESIGN METHOD

• Main Author: Tesalonika, Chiesa
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/68264
• Institution: Institut Teknologi Bandung

Natural gas is a primary energy source used by almost all sectoral in Indonesia. Natural gas demand will increase along with economic growth in Indonesia. Because there is increasing demand for natural gas, capacity, quality, and economical design of natural gas distribution infrastructure must be better. A pipeline is a general infrastructure used to transport natural gas. Pipeline design safety must be reviewed because the pipeline is usually located near residential areas or other facilities. This study conducted a Suban 3 gas pipeline analysis for ensuring pipeline design safety. A strain-based design method is used because Suban 3 gas pipeline is a buried pipe with high pressure and high temperature condition. This study conducted a stress analysis and strain analysis of the Suban 3 gas pipeline using code ASME B31.8 as reference. This study begins with modeling the pipeline in AutoPIPE software and then doing stress analysis based on stress-based design criteria. After that, the model of the Suban 3 gas pipeline is imported to Abaqus software for doing stress and strain analysis based on strain-based design criteria. From the analysis results on this Suban 3 gas pipeline, the gas pipeline design are safe based on its design criteria. Based on strain-based design criteria using ASME B31.8 as a reference, the maximum value of CSR (Code to Stress Ratio) is 0.926. The maximum value of CSR is located in KM 0+194 and that value occurred because of combined loading between gravity loads, pressure loads, and temperature loads of the pipeline. Besides that, the longitudinal pipeline strain value is 0.61%. That strain value is smaller than the strain capacity limit based on strain-based design criteria.