Abstract
In the field of risk analysis regarding major accidents, the most commonly adopted techniques of analysis and evaluation are HazOp and Fault Tree Analysis (FTA), which have many application software and available established procedures to support risk analysts.Albatros III, developed on the basis of the experience gained with the previous software (Antonello et al. 2009, ref. [1]), aims to minimize wasted time by processing Fault Trees and Minimal Cut Sets (MCS) on the basis of the Hazop application.Basing the construction of the fault tree on the Hazop analysis also allows a more accurate and complete evaluation of the results.Fault trees are automatically obtained in graphical form and quantified. The MCS are also processed and displayed both by breaking down into categories associated with the different types of instrumentation, and by indicating the equations that compose them, with the level and incidence of the individual items. In this way it is also easy to obtain the SIL.A database containing reliability datasets is linked to the AlbatrosIII software, allowing the choice of individual data for the automatic calculation of the expected failure frequency or PFD of the system.
