WALL THICKNESS, ON-BOTTOM STABILITY AND FREE SPAN ANALYSIS FOR SUBSEA PIPELINE CASE STUDY: SUBSEA PIPELINE FOR OFFSHORE CENTRALIZED CRUDE TERMINAL LAWE-LAWE

• Main Author: BRANDON MANIK (NIM : 13107133); Dosen Pembimbing : Prof. Dr. Ir. IGN Wiratmaja Puja, AGA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14692
• Institution: Institut Teknologi Bandung

Along with the increasing need of oil in the global world, construction of offshore facilities has become one of the major concern in oil and gas industry. Offshore and onshore facilities are usually connected by a pipeline system called offshore pipeline. The design of the pipeline is needed so it will be able to transport the fluid/ gas to the processing facilities and it can be processed and utilized for human needs. This final assignment will conduct analysis for offshore pipeline which includes three main aspects: wall thickness selection, on-bottom stability and pipeline free span analysis. The analysis for wall thickness selection will be based on the criteria in ASME B31.4 (pressure containment) and API RP 1111 (external and internal pressure). For on-bottom stability, the analysis will be based on the criteria in DNV RP E305 and DNV RP F109. For pipeline free span, the analysis will be based on equation from Boyun Guo and DNV RP F105. <br /> <br /> <br /> The results of the analysis provides the specifications of 0.5 inch pipe wall thickness according to extra strong pipe schedule, 116 mm concrete coating thickness (DNV RP E305) with 2,866 N/m submerged weight and 41.3m maximum allowable span length (DNV RP F105).