Failure rate prediction is one part of the Reliability Workbench package. Each of the failure rate prediction methods have the same general form. They provide you with a powerful visual interface through which you can select components and define the conditions in which they operate such as the temperature or environmental conditions. The prediction software then carries out the failure rate calculation as defined by the standard and gives you the result. The MIL-217, Telcordia(Bellcore), RDF 2000 and GJB/Z 299B are mainly for electronic components and the NSWC handbook deals with mechanical components.