Surveillance test interval optimization

摘要: Technical specifications have been developed on the bases of deterministic analyses, engineering judgment, and expert opinion. This paper introduces our risk-based approach to surveillance test interval (STI) optimization. consists three main levels. The first level is component level, which serves as a rough estimation optimal STI can be calculated analytically by differentiating equation for mean unavailability. second third levels give more representative results. They take into account results probabilistic risk assessment (PRA) personal computer (PC) based code are system unavailability at core damage frequency plant level.