New Approach to Calculate the Unavailability of Identical Spares in Cold Spare Configuration  

作　　者：NYAN Win-aung 魏海军 柳霆 

机构地区：[1]Marine Engineering College ,Dalian Maritime University [2]Marcent Marine College ,Shanghai Maritime University

出　　处：《Journal of Donghua University(English Edition)》2014年第6期863-869,共7页东华大学学报（英文版）

基　　金：National High-Technology Research and Development Program of China(863 Program)(No.2013AA040203)

摘　　要：Cold spare is the most common configuration amongst the three types of configuration for systems used on board and for power generation systems. A new approach to calculate the unavailability of systems composed of identical spares in cold spare configuration was proposed in this study. Instead of using the spare gate of dynamic fault tree( DFT) and the Markov analysis,AND gate of static fault tree used for calculating the unavailability of cold spare systems was proposed in this paper. By using this approach,unavailability of identical cold spare systems composed of nonrepairable spare components can be calculated exactly and systems composed of both repairable and nonreparable identical spare components can be estimated without building large Markov state diagram.Cold spare is the most common configuration amongst the three types of configuration for systems used on board and for power generation systems. A new approach to calculate the unavailability of systems composed of identical spares in cold spare configuration was proposed in this study. Instead of using the spare gate of dynamic fault tree（ DFT） and the Markov analysis,AND gate of static fault tree used for calculating the unavailability of cold spare systems was proposed in this paper. By using this approach,unavailability of identical cold spare systems composed of nonrepairable spare components can be calculated exactly and systems composed of both repairable and nonreparable identical spare components can be estimated without building large Markov state diagram.

关 键 词：cold spare spare gate AND gate failure percentage(FP) fault tree analysis Markov analysis 

分 类 号：TH122[机械工程—机械设计及理论]