Corrosion Pipe Analysis Based on ASME B31.G (2012)

• Main Author: Barry Alfian, Fikri
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/41241
• Institution: Institut Teknologi Bandung

The energy of humans are increasing over time, especially in the use of oil and gas. Before human use the energy, it needs to be processed first, but not all energy sources are close to energy processing sites or energy users, such as oil and gas, so an effective transmission and distribution system is needed. Pipes are effective equipment for distributing oil and gas. Pipe interaction with the environment will cause defects in the pipe which can cause failure in the piping system, one of the cause of failure in the piping system is corrosion. In this research, an evaluation of 102 km pipelines from offshore facilities to onshore facilities, corroded pipes are located in the pipe area buried from onshore to offshore facilities. The valuation method used in this study refers to the 2012 standard ASME B31.G level 0 to level 3. In the level 3 assessment, the analysis was carried out with numerical simulations using Autopipe software for stress analysis on pipe installations and Ansys for stress analysis in the pipe segment with analysis criteria that refer to API 579 FFS Part 4. The results of the pipe assessment from level 1 to level 3 indicate that the pipe meets the criteria, so that it can be concluded that the corroded pipe can be operated. In this research, the age prediction of pipe operation is also based on API 579 FFS Part 4 with operating conditions and defects at the end of the inspection with a constant corrosion rate of 0.05 mm / year and the pipe is still allowed to operate for 2.7 years. The calculation results are based on API 579 Part 2. The maximum pressure that is held by the corrosion pipe is 822.1 psig, and the recommended method for corrosion pipes is recoating.