Earthquakes represent a class of Natural-Technical hazards which in the past has been responsible of major accidents and significant losses in many industrial sites. However, while codes and standards have been issued to design specific structures and equipment in the civil and industrial domain, established procedures for Quantitative Seismic Risk Assessment (QSRA) of process plants are not yet available. In this paper a critical review of seismic risk assessment methods applicable to process plants is carried out. Their limitations are highlighted and areas needing further research are identified.

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