Abstract
The scope of this paper is to discuss the challenges encountered in integrity management of a Quench Column against internal corrosion caused by sour water in a gas plant. The scope also covers repair techniques and methodologies adopted to maintain the integrity of the equipment without plant / unit shutdown thereby achieving improved reliability of the plant.
The information provided in this paper is related to a sulphur unit equipment in a gas plant dealing with sour environments and is useful in taking a preventive approach for the safe and reliable operation of Liquefied Natural Gas (LNG) facilities to minimise volumetric downtime. The case study presented has valuable application in sulphur recovery units with respect to internal corrosion of different columns.
This paper highlights the failure mechanisms in sour environments versus corrective actions and various integrity management approaches used to overcome practical difficulties to ensure integrity of equipment and enable proper planning to avoid / minimise costly shutdown of the equipment / plant.
