ICONE11-36067 USING RISK-INFORMED ASSET MANAGEMENT FOR FW SYSTEM PREVENTATIVE MAINTENANCE OPTIMIZATION

概要

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Past and ongoing STPNOC Owner investments in plant information technology (such as database query applications and other client workstation tools) have made it possible for plant staff to utilize information contained in the CWMS to quickly link equipment failure modes to related preventative maintenance (PM) activities. The FW systems STPNOC maintain comprise 3,769 TPNSs which in turn represent about 16,300 failure modes. Risk-informed asset management (RIAM) of FW PM activities requires the failure modes to be modeled in the STPNOC BOP (availability) model. In this paper we present initial development of a STPNOC process for supporting PM optimization, applying the STPNOC BOP and STPNOC RIAM alpha-level software applications. In this work presented, PM activities are evaluated (for profitability and nuclear safety) in the STPNOC RIAM alpha-level application. PMs are optimized for profitability and nuclear safety results are used to ensure STPNOC maintains or improves upon high levels of nuclear safety. In the BOP availability application the level of detail of the FW system is enhanced to support plant decision-making at the component failure mode and human error mode level of indenture for the FW system. The enhanced FW model and modeling techniques are presented. Results of case studies in FW system PM optimization using STPNOC data are presented.