Chapter 8

Comparison and Complementarity between Reactive and Proactive Approaches

G.E. Scarponi1,  and N. Paltrinieri2,3     1University of Bologna, Bologna, Italy     2Norwegian University of Science and Technology (NTNU), Trondheim, Norway     3SINTEF Technology and Society, Trondheim, Norway

Abstract

Reactive and proactive approaches aim to provide dynamic assessment of the overall system risk by following partially different paths. The Bayesian inference-based dynamic risk assessment monitors and processes data from past incidents and near misses. This allows for update of safety barrier failure probabilities in a reactive way. The risk barometer, however, dynamically assesses health of safety barriers on the basis of a wide range of indicators. ...

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