Development of a PSA workstation for operational safety management

This paper describes several efforts for the development of PSA(Probabilistic Safety Assessment) Workstation in KAERI (Korea Atomic Energy Research Institute) to manage operational safety of Nuclear Power Plants (NPPs); (1) development of PSA modeling tool, KIRAP, (2) development of a risk monitor, Risk Monster, (3) development of plant information system, EPIS, (4) development of reliability centered maintenance(RCM) tool, RAM-Pro. KIRAP supplies fault tree(FT) editor, quantification engine (Kcut), event tree(ET) editor, and database management tool(KwDBMan) in Window environment. Risk Monster supports for plant operators and maintenance schedulers to monitor plant risk and to avoid high peak risk by rearranging maintenance work schedule. EPIS (Electro Plant Information System) supplies plant information related to components such as equipment list and specification, maintenance work history data, preventive maintenance (PM) items list, spare parts information, technical specification information, design change information, and P and ID, etc. RAM-Pro help RCM by providing maintenance history data management (RAM-Hist), reliability analyzer (RAM-Rel), and RAM-RCM which are used for FFA(Functional Failure Analysis), FMEA(Failure Mode Effect Analysis) and LTA(Logical Tree Analysis) in RCM. (author)