The aim of this paper is to assess the effectiveness of a new and reliable assessment model presented in Fera and Macchiaroli (2009) able to face the aforesaid applicability difficulties of the models developed so far and to show through its application to several industrial plants how an improvement in safety condition can actually be achieved.The proposed model is based on known techniques, such as Failure Modes and Effects Criticality Analysis
(FMECA), Scenario Based Risk Assessment (SceBRA) and Italian standard UNI 7249:2007.These techniques are integrated within a procedure composed by seven steps,some quantitative and some
qualitative. This model also includes the Analytic Hierarchy Process (AHP) decision making technique, which – as well known is useful to minimize inconsistencies in experts’ judgments, within
the subjective phases of risk assessment.