REMAINING STRENGTH ANALYSIS IN PIPELINE INTEGRITY FOR CORRODED PIPELINE CASE STUDY: BITUNG-CILEGON GAS PIPELINE

• Main Author: ANDREAS JOSEP (NIM : 13106007); Dosen Pembimbing : Prof. Dr. Ir. IGN Wiratmaja Puja, BRIAN
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/15187
• Institution: Institut Teknologi Bandung

Pipeline needs to operate in a safe state to avoid the failures that resulted in a loss in humans or the environment. Series of measures to control the work function of the pipeline to stay safe referred to as pipeline integrity. Pipeline Integrity conducted a series of activities based on ASME code B31.8S which consists of identification of threats, risks assessment, inspection, repair and mitigation. One of the potential threats faced by the pipelinewas corroding. Corroded pipeline will decrease in strength. <br /> <br /> <br /> Decrease in strength due to corrosion can be evaluated through several methods. In the final project, writer use the method based on ASME B31G and modified ASME B31G. To simplify the calculation by both methods, the authors use auxiliary programs have been developed previously. In a program aids those still there are deficiencies, which include corrosion rate values manually. Therefore, the authors make the modification by adding a corrosion rate calculation tool programs. <br /> <br /> <br /> The analysis was conducted for case studies of Bitung-Cilegon gas pipeline. During operation, the gas pipelines has been degraded due to corrosion. It is shown from pigging data conducted in 2007. According to data pigging has occurred 168 defects caused by corrosion on the pipeline. After analyzing the overall data, according to the ASME B31G acquired the remaining 3 years of age. Meanwhile, according to modified ASME B31G acquired the remaining 10 years of age. And there are also studies that compare the parameters of the two methods based on the main parameters of defect depth, length of disability is measured, the diameter and thickness of the pipe.