Abstract: Objective: The large-scale development of Carbon Capture, Utilisation and Storage (CCUS) technology will inevitably drive the research, development and engineering application of supercritical CO₂ pipeline transport technology. However, as conventional fracture resistance models are unable to predict the fracture toughness of supercritical CO₂ pipelines, and relevant fracture stress correction formulas indicate that calculations using different correction methods yield varying results, and these differ significantly from the predictions in the DNVGL-RP-F104 standard. Consequently, a crack arrest control system for supercritical CO₂ pipelines has yet to be established, presenting a major obstacle to the widespread application of CCUS technology. There is therefore an urgent need to develop a more cost-effective and engineering-applicable crack arrest assessment model for supercritical CO₂ pipelines..Methods: To address this issue, based on publicly available full-scale burst test data of CO₂ pipelines worldwide and relevant design standards for CO₂ pipelines, this study modifies the existing resistance-driving force curves using a crack arrest toughness parameter correction method, thereby extending the applicable scope of the crack arrest assessment diagram. Results: The results indicate that optimal crack arrest assessment performance is achieved with a crack arrest toughness parameter correction factor k=3.09. The established modified model resolves the over-conservative prediction issue inherent in traditional crack arrest models.Conclusions: Based on the resistance-driving force curve crack arrest criterion, the supercritical CO₂ pipeline crack arrest assessment model developed in this paper can accurately evaluate the crack arrest behavior in existing full-scale CO₂ pipeline burst tests. The resulting model is suitable for the crack arrest assessment of supercritical CO₂ pipelines in engineering design.