Design of Gas Pipeline Case Study : Offshore and Onshore Pipeline of Labuhan Maringgai - Serpong

• Main Author: Dwinda Putra, Arsyil
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/21263
• Institution: Institut Teknologi Bandung

The increase in demand for natural gas in Java must be followed by increased infrastructure such as gas pipeline, especially gas transmission lines that connect Sumatra as the largest sources of natural gas with Java as the largest domestic natural gas consumers. <br /> <br /> <br /> On this final project, will be conducted analysis of the design of offshore and onshore pipeline which includes analysis of the selection of route, hydraulic analysis, determining thickness and the material of the pipe, determining the anti-corrosion coating, and stress analysis on pipe. On-bottom stability, free span and cathodic protection of offshore pipeline will also be analyzed in this final project. <br /> <br /> <br /> Thus, the results of the calculations and analysis showed that the specification of the pipe were 32 inch NPS with API 5L grade X65 schedule 30 and API 5L grade X65 schedule 40, 10 inch NPS with API 5L grade X65 schedule 20, and 5 inch with API 5L grade X65 schedule 40. Pipeline will be used 3-LPE anti-corrosion coating. Offshore pipeline has a concrete coating of 55 mm and the length of free span of 57 m. Offshore pipeline also use cathodic protection using sacrificial anode method with bracelet type. Ratio of the stress that occurs on the offshore and onshore pipeline to the allowed stress of the pipe are 0.66 and 0.68.