ABSTRACT
Quantitative Risk Assessment (QRA) audits are well known service offers of consulting engineers. Very limited QRA resources, increased demands on validity of audit results, e.g., the trend to focus on compliance verification, overload the common check list approaches. The employment of modern technology (e.g., web-based tools) may positively affect the auditors’ workload capacity, the formalisation of risk audit methodology as well as the range of services. Based on an online search, the (available) QRA tools are characterised. Quantitative and semi-quantitative approaches are used and integrated within a generic event tree methodology. For this, generic event trees are quantified by weighting factors which are associated with the assessment criteria as common in QRA audits. The factors are reasoned a by Bayesian network. The approach is exemplified. The paper concludes with outlining the benefit and constraints of QRA audit tools.
