Perpustakaan Digital ITB

Since the Paris Agreement in 2016, Carbon Capture and Storage (CCUS) research has made substantial progress. Repurposing existing pipelines for CO2 transport, rather than building new ones, has the potential to reduce construction costs significantly by up to 50%. However, this practice is not widespread in Indonesia. Failures in CO2 pipelines frequently stem from minor manufacturing or operational flaws in welds or other pipe components, which can lead to rapid and extensive crack propagation.Most pipelines in Indonesia are constructed from X52 steel, which is less commonly repurposed for CO2 transport globally. Pipelines typically used for CO2 transportation often employ higher-grade materials like X70 to X100, known for their superior toughness compared to X52, X60 and X65. This study utilizes Abaqus finite element software with XFEM and performed under static internal pressure loading modeling to simulate crack propagation and determine initial crack length required at arrest pressures in API 5L X52, X60 and X65 pipe materials along with geometric dimension variation. The findings of this study confirms the direct relationship between required initial crack length and arrest pressure for different geometric dimensions and material of pipe in CO2 pipelines. This research aims to contribute to fracture control strategies for CCUS infrastructure, enhancing the reliability of CO? transport and supporting the feasibility of repurposing existing X52 pipelines.