Corrosion is a serious challenge for piping systems in gas-oil separation plants (GOSPs) that causes piping failures. Two GOSPs, selected on this study (Plant-A and Plant-B) observed chronic corrosion issue with an on-plot piping system that led to having more pipe replacements over the past few years. Since it is almost impossible to avoid corrosion, it is becoming more obvious that managing the corrosion level may be the most economical resolution. Corrosion engineers are therefore increasingly involved in approximating the cost of their answers to corrosion prevention, and assessing the useful life of equipment. This case study covers the background of corrosion encountered in piping internally and externally in these two GOSPs. The collected piping replacement data from 2011 to 2014 was covered. The purpose and display trends and performance analysis to replicate corrosion levels in an on-plot piping system. In addition, in this case study, included is the total pipe replacement with a drain line system and other service lines in both plants.

Keywords: GOSP, On-Plot Piping, Drain Lines, Saudi Aramco