Organization and Information Support of Expert Reviews of I&C Systems Modernization at NPP of Ukraine
Safety assessment of Instrumentation and Control systems (I&C systems) of NPP is performed during expert reviews of nuclear and radiation safety in the framework of the licensing process at all life cycle stages of I&C systems. Life cycle stages of NPP I&C systems, which are determined by current guides, rules, and standards of Ukraine, are considered in the chapter. A short overview of the main principles of safety regulation of nuclear facilities, licensing, and expert review of nuclear and radiation safety is presented. Specific safety assessments of NPP I&C systems at different life cycle stages are analyzed (in particular, a list of documents proving NPP I&C safety that should be submitted for expert review at each stage is given). Such assessment is a labor-intensive process that requires processing considerable amounts of a variety of information. Hence, it is reasonable to provide experts with information support for assessing the safety of NPP I&C systems. The chapter gives suggestions and examples of practical implementation of the automated system for support of expert activities and considers the knowledge base for I&C systems.