DETERMINATION OF TYPE AND TIME OF INSPECTION FOR GAS TRANSMISSION PIPELINE BASED ON RISK LEVEL CASE STUDY : SUBAN-GRISSIK GAS TRANSMISSION PIPELINE

• Main Author: VERDANA (NIM : 13106118); Dosen Pembimbing : Prof. Dr. Ir. IGN Wiratmaja Puja, ADIASA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14633
• Institution: Institut Teknologi Bandung

Pipeline receive several conditions due to the influence of the load, distributed fluid, and the environment that is passed by the pipeline during its operation. All these <br /> <br /> <br /> conditions will have the potential to cause a failure in the pipeline. By knowing the risk level in certain parts of pipeline, the type and interval of inspection can be determined so the condition of the pipeline can be known with higher convidence. <br /> <br /> <br /> This final project was to determine the type and interval of inspection for pipeline based on the known risk level. The pipeline to be analized is gas transmission pipeline from Suban toward Grissik. This transmission pipeline consists of five flowlines (distribution line from the production wells to the gatthering station), that is # 2 Suban Well, # 3 Suban Well, Suban # 4 Well Suban # 6 Well, and Suban DM # 2 Well. Then trunklines (distribution line between gathering stations), that is Suban Station to Grissik CGP for condensate and Suban to Grissik CGP for gas. <br /> <br /> <br /> From the case study analysis, the appropriate method for Suban-Grissik pipeline inspection is intelligent pigging, ROW surveys, CP monitoring, and LRUT as an alternative if pigging didn’t used . For pigging, the inspection interval is determined same for all the pipeline route, which is 5 years. In the ROW survey, the longest inspection interval is 6 months at 8” Suban station-CGP and Suban #3, the shortest interval was 3 months at 8" Suban station -CGP. While CP has the longest inspection intervals of 5 years at 8” Suban station-CGP, 26” Suban station-CGP, and Suban #3 and the shortest interval is 1 years at 8” Suban station-CGP, 26” Suban station-CGP, Suban #2, Suban #4, Suban #6, and DM #2. LRUT has the longest inspection interval of 5 years at 8 "Suban station-CGP. While the shortest is 2 year at Suban #3 and DM#2.