The document discusses seismic qualification of pressure vessels and strainers according to ASME and PNAE codes. It provides an overview of typical workflows for seismic qualification, including creating CAD and FE models. Load cases like dead weight, pressure, thermal loads, operational basis earthquake and safe shutdown earthquake are considered. Allowable stress intensities and acceptable limits for different service levels are compared between the codes. A case study demonstrates seismic analysis of a tank for various load combinations and service levels. Results are shown to comply with allowable limits from both ASME and PNAE codes.