ABSTRACT
As a prerequisite, the Risk Barometer should be based on an existing Quantitative Risk Analysis (QRA), in order to identify the most risk-affecting QRA parameters (e.g. probabilities of failure on demand of safety barriers). Factors describing the condition of barriers, named Risk Influencing Factors (RIF), are then defined for each QRA parameter. A set of risk indicators are finally introduced to measure the status of the various RIFs.
