DATA REQUIREMENTS FOR DECISION-SUPPORT SYSTEMS OF HIGH-RELIABILITY

Decision support systems use a quantity of more or less uncertain data and information. Methods are needed to quantify at least in some qual itative manner the uncertainties of the results from decision support systems. Especially during the early phase of an accident, important d ecisions have to be made from forecasts on the source term and weather conditions. Accident analyses may be used to derive source term model s as well as accident instrumentation providing the data needed to use these models. Determinations of accuracy of models and measuring resu lts must be used to estimate the confidence of accident mitigation mea sures, recommended by a decision support system.