Energy Incorporated (EI) proposes to establish a program to gather plant-specific data for the Nuclear Plant Data Bank (NPDB). The required information includes geometric and operating data for the primary system secondary system, balance of plant, and the trip and control systems. Although, every commercial reactor in the U.S. has unique design features, many share a common basis by which they can be categorized. Phase I has four objectives: (1) develop a plant matrix which categorizes all U.S. commercial nuclear plants according to common design features as well as unique characteristics at the component level; (2) establish administrative controls for information transfer between the vendors, owners, NRC, and EI; (3) develop a methodology for the construction of NPDB plant data bases; and (4) test this methodology by assembling a complete data set for one plant. Phase II will be a continuation and completion of the detailed plant matrix and generation of the NPDB data bases for at least one plant in each major category.Anticipated Results/Potential Commercial Applications of the Research:Anticipated results include: (1) the construction of a detailed plant matrix which will provide a coordinated and efficient program for data gathering by identifying plant features as either shared or unique; and (2) the development of a NPDB data base generation methodology, which will provide a consistent and efficient approach for constructing each plant-specific data base. At the completion of Phase II, the information stored in the NPDB will expand commercial possibilities for consultants, such as EI, to build plant computer models, to perform independent model reviews and safety analyses, and to develop pre- and post-processors for nuclear safety computer codes.