RDAT-Plus

R-DAT Plus is the full-featured Bayesian data analysis package for risk analysts. It is designed for users who need to perform system-specific analyses, but who also have a need to develop generic prior distributions based on industry data.

R-DAT Plus provides you with a powerful, yet simple and flexible environment for storing and organizing many types of reliability data and related information. A hierarchical structure enables the user to develop functional or structural or any other type of breakdown, at any level of detail. The elements of this hierarchy act as folders containing the reliability data and the results of Bayesian analyses performed on the data sets.

In a few simple steps, R-DAT Plus enables you to update your prior distributions (generic, or previous plant-specific update) with new plant-specific data using likelihood functions that match the type of data (for example, Binomial likelihood for failure on demand, Poisson likelihood for failure during operation or initiating event frequency). Prior and Posterior results are displays graphically in p.d.f. or c.d.f. formats together with numerical values of various percentiles and other properties of the distributions.

With R-DAT you can specify the prior distribution in many different ways depending on the type and level of information available to you. These include a wide variety of parametric distributions (e.g., lognormal, beta and loguniform) using any of a number of input options such as lower and upper bounds, mean and variance, or the distribution parameters. Furthermore, R-DAT enables you to develop generic distributions based on industry data (counts of failures in other plants) as well as expert estimates. The resulting distributions will represent the plant-to-plant variability of failure rate of a given class of components or initiating events, and can be used in a plant-specific analysis in order perform the Two-Stage Bayesian procedure.

For detailed information about the features, please see the feature matrix.

R-DAT Plus is available for Windows platforms.

Interested? Download an evaluation copy here.