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Applications of prognostics for maintenance optimization of research reactors
RAHMAN Khalil Ur1, KANG Myoung-Suk1, and HEOGyunyoung1
1.Department of Nuclear Engineering, Kyung Hee University, Gyeonggi-do, South Korea
(Tel: +82-31-201-3593, E-mail: gheo@khu.ac.kr)
Abstract:The optimization of operation especially maintenance and surveillance of various components and systems of research reactors using prognostic have been emphasized in this study to save cost and time while keeping safety and reliability high. This study is focused on the research reactors due to margin of cost competitiveness and regulation. The feasibility study has been performed in order to find the potential candidates from research reactors, on which prognostic can be implemented. System and components has been classified into category I and category II, based on the nature of working during the operation of research reactor. The systems of category I are those which, either full or part of them, remain in working condition during normal operation of a research reactor. For instance, instrumentation & control components of safety, protection and monitoring systems belong to this category. Contrary to this, the systems which remain standby during normal operation and start operation on safety signals are grouped in category II. Motor operated valves, pumps of emergency system and vital power system are well suited examples. The online and offline prognostics have been proposed as a work approach for category I and category II systems respectively.
Keyword:prognostics;maintenance optimization;instrumentation & control monitoring;research reactor |
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