Natural Hazard Triggering Technological Disasters (Na-Tech) are becoming a key aspect of the improvement of the resilience capacity of society. In this regard, the reduction of the seismic vulnerability of industrial plants helps reduce detrimental effects such as life losses, economic losses, and environmental damage. However, the large variability of equipment, connections, materials, size, etc., makes the definition of the seismic capacity of industrial plants a difficult task. This preliminary study provides a seismic assessment of the interaction between pressurized tanks and connecting pipelines subjected to far-field ground motions. The seismic assessment was carried out on three configurations of pressurized tanks and pipelines subjected to nonlinear time-history analysis using the FEMA P695 far-field ground motion set scaled to three increasing intensity levels. The results highlight the importance of considering the dynamic interaction between the tanks and the pipelines, usually neglected in design requirements.