RiskVu provides a high level interface for probabilistic safety assessment studies for performing Probabilistic Risk Assessments (PRA's). It may be used by operators and managers who are not familiar with risk assessment techniques but who wish to determine the effects of maintenance outages or changes in reliability data and event frequencies on the risks associated with a system. RiskVu also performs cost benefit analyses. RiskVu uses the data from a FaultTree+ study and presents it in the form of a failure event hierarchy. The user can modify some aspects of the model such as failure rates or equipment outages. The quantitative analysis is then repeated and the results displayed in report or graphical form.