C2024-20669 Wet CO-CO2 Stress Corrosion Cracking in CCS Pipelines

Manoj Gonuguntla, Johannes Sonke, Guru Prasad Sundararajan, Aruna V T - Carbon capture and sequestration (CCS) is gaining greater importance in theindustry transition to meet climate goals reducing carbon intensity. As the source ofCO2 captured for sequestration widens to many more applications from oil and gasproductions, power plants, refineries, chemical plants, steel manufacturing and otherindustries, the composition of the captured gas stream for sequestration sees variouscomponents. Some of the common impurities particularly from combustion processesare carbon monoxide, oxygen, SOx, NOx and others. Understanding the effect ofpresence of the various chemical species on material limits and maximum tolerancelimits are crucial for safe operations of the assets. In one of the recent projects, therewas a presence of CO in the CO2 stream, and it was imperative to identify the effectof this on the existing carbon steel pipeline. The pipeline was of X65 steel andfa