Hazard investigation of dry-ice bank induced risks related to rapid depressurization of CCS pipelines

This study aims at investigating different modeling approaches to face hazards related to this source and the mechanisms related to the near field atmospheric dispersion of CO2. Moving from simplified approaches to more complex ones relying on Computational Fluid Dynamics, some danger distances are classified under different stability classes. The analysis shows some discrepancies concerning the predicted gas dispersion. The most simplified approaches are not able to give a near-field reliable description that is instead captured by the CFD along with stratification phenomena. On the contrary, the CFD applicability is strictly linked to the computational burden that is usually not compatible with emergency-related responses but only with planning issues.