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MTBF estimation of a new design reactor coolant pump   YANG Ming1, LU Hong-xing2, and WANG Wen-lin3   1. College of Nuclear Science and Technology, Harbin Engineering University, No.145 Nantong Street, 150001, China (yangming@hrbeu.edu.cn) 2. College of Nuclear Science and Technology, Harbin Engineering University, No.145 Nantong Street, 150001, China (hongxinglu@hrbeu.edu.cn) 3. College of Nuclear Science and Technology, Harbin Engineering University, No.145 Nantong Street, 150001, China (wlwang0618@126.com)   Abstract: This paper presents an approach for the MTBF estimation of a new design reactor coolant pump (RCP). The proposed approach is based on failure mode and effects analysis (FMEA) and path classification and estimation (PACE) model. FMEA is used to identify and classify the failure modes of the new design RCP, and compare them to the reference products to find the similar parts. The exemplars affiliated to the Category 3 failures of the similar parts will be selected from the reference products to construct a PACE model. The remaining useful life (RUL) of the new design RCP after a limited test time can therefore be estimated by the PACE model. A general equation for the MTBF estimation of a new design RCP is also presented. Since the proposed method is based on real performance data from reliability test, it will provide more accurate MTBF estimation than classic methods. Keyword: reliability estimation; failure mode and effect analysis; PACE model; reliability testing
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