In the frame of the Italian research project INGV‐DPC S2 (, funded by the Dipartimento della Protezione Civile (DPC; National Civil Protection Department) within the agreement 2007–2009, a tool for probabilistic seismic‐hazard assessment (PSHA) was developed. The main goal of the project was to provide a flexible computational tool for PSHA; the requirements considered essential for the success of the project included:

Some commonly used programs (e.g., FRISK by McGuire [1978]; SEISRISK III by Bender and Perkins [1987]) and more recent and state‐of‐the‐art tools (e.g., OpenSHA by Field et al. [2003],;OpenQuake,

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