Research on Equipment Grading Based on System Reliability Allocation
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摘要: 传统的设备分级方法以安全功能实现为基准，该方法无法兼顾核电厂（NPP）的经济性。针对该问题，以NPP高安全及高经济性实现为目标，提出一种基于系统可靠性分配且融合系统重要度与核安全重要度因子对设备进行分级的新方法。以浮动式核电站凝给水系统为例，开展设备可靠性分级研究。研究给出了考虑了系统重要度和核安全重要度后的可靠性量化结果。该结果可以作为设备分级的依据，并能够用于电厂设备的检修、故障诊断和健康管理。Abstract: Traditional equipment grading method is based on the realization of safety function, which can not take into account the economy of nuclear power plant (NPP). A new method of equipment grading based on the system reliability allocation and system importance and nuclear safety importance factor is proposed for solving this problem and achieving high safety and high economy of NPP. Taking the condensate water supply system of floating nuclear power plant as an example, the equipment reliability grading research is carried out. The quantitative results of reliability considering system importance and nuclear safety importance are given. The results can be used as the basis for equipment grading, and can be used for maintenance, fault diagnosis and health management of power plant equipment.
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Key words:
- NPP /
- System importance /
- System reliability /
- Equipment grading
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图 4 融合安全性与可靠性的设备分级流程
Figure 4. Equipment Grading Flow with Combination of Safety and Reliability
表 1 设备安全分级与系统可靠性分配的差异
Table 1. Difference between Equipment Safety Grading and System Reliability Allocation
项目 系统可靠性分配 安全分级 目标 高系统可靠性 高安全性 针对工况 正常运行 事故工况 针对系统 正常运行相关系统 维持安全功能的系统 主要技术 故障树、框图、失效模式与效应分析 确定论为主，概率论辅助 设备分级 关键件、重要件、一般件 安全1级、安全2级、安全3级和非安全级 
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表 2 凝给水系统设备可靠性分配结果
Table 2. Equipment Reliability Allocation Results of Condensate Water Supply System
设备 复杂度
因子系统可靠度
因子核安全重要
度因子环境
因子时间/
%MTBF/h 隔离阀1# 4 6 7 5 100 10107.42 管路01 2 8 8 8 100 181933.6 止回阀1# 3 5 7 7 100 12995.26 止回阀2# 3 5 7 7 100 12995.26 隔离阀2# 4 6 7 5 100 10107.42 给水泵1# 5 7 4 5 50 9703.125 给水泵2# 5 7 4 5 50 9703.125 凝水泵1# 5 6 3 5 50 5390.625 凝水泵2# 5 6 3 5 50 5390.625
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[1] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. 压水堆核电厂物项分级: GB/T 17569-2013[S]. 北京: 中国标准出版社, 2013 [2] American Nuclear Society. Safety and pressure integrity classification criteria for light water reactors: ANSI/ANS-58.14-2011[S]. La Grange Park: American National Standards Institute, 2011 [3] 钱永柏,赵军,童节娟,等. 核电站风险指引设备分级的试点研究[J]. 核科学与工程,2009, 29(1): 81-85. doi: 10.3321/j.issn:0258-0918.2009.01.015 [4] 李朝君,宋维,陈研,等. 基于CDF的核电厂可靠性指标分配方法研究[J]. 核科学与工程,2019, 39(5): 765-770. doi: 10.3969/j.issn.0258-0918.2019.05.014 [5] 马礼兵. 针对核电产品的可靠性评分分配法[J]. 上海电气技术,2017, 10(2): 24-27. doi: 10.3969/j.issn.1674-540X.2017.02.007 [6] 张新贵,武小悦. 系统可靠性分配的研究进展[J]. 火力与指挥控制,2012, 37(8): 1-4. doi: 10.3969/j.issn.1002-0640.2012.08.001 [7] 董聪. 系统可靠性分配方法[J]. 系统工程与电子技术,1996(7): 36-40,68. doi: 10.3321/j.issn:1001-506X.1996.07.006 [8] 鹿祥宾,李晓钢,林峰. 复杂系统的可靠性分配和优化[J]. 北京航空航天大学学报,2004, 30(6): 565-568. doi: 10.3969/j.issn.1001-5965.2004.06.018 [9] NAKAGAWA Y, NAKASHIMA K, HATTORI Y. Optimal reliability allocation by branch-and-bound technique[J]. IEEE Transactions on Reliability, 1978, 27(1): 31-38. doi: 10.1109/TR.1978.5220232 [10] GUROV S V, UTKIN L V, SHUBINSKY I B. Optimal reliability allocation of redundant units and repair facilities by arbitrary failure and repair distributions[J]. Microelectronics Reliability, 1995, 35(12): 1451-1460. doi: 10.1016/0026-2714(95)91270-6 [11] JACOBSON D W. Simultaneous allocation of reliability & redundancy using simplex search[C]//Proceedings of 1996 Annual Reliability and Maintainability Symposium. Las Vegas: IEEE, 1996: 243-250. [12] ELEGBEDE A O C, CHU C B, ADJALLAH K H, et al. Reliability allocation through cost minimization[J]. IEEE Transactions on Reliability, 2003, 52(1): 106-111. doi: 10.1109/TR.2002.807242 [13] 梁晓锋. 以顶层参数为目标的舰船可靠性关键技术研究[D]. 上海: 上海交通大学, 2011: 53-56. [14] 易宏,朱煜,林洲,等. 舰船总体可靠性分配方法[J]. 上海交通大学学报,1998, 32(7): 99-104. -
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