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《China Mechanical Engineering》 2016-01
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Reliability Assessment of Safety-instrumented Systems Operated in High-demand Mode

Wang Yukun;Liu Zixian;Tianjin University;  
Currently,the research of reliability analysis of high-demand safety instrumented systems was rare.Considering the process demands,item failure modes,proof test strategy and maintenance,a Markov model of the 1oo2 voted group was developed for the reliability analysis.After that,the effects of demand and proof test strategy on the reliability of the voted group were explored,respectively.The results show that the reliability of the voted group decreases with the demand rate and the proof test frequency.The operating state of the group is dominantly verified by demands if the demand rate is larger than the proof test frequency,and by proof tests otherwise.
【Fund】: 国家自然科学基金资助项目(71171142);; 教育部博士学科点专项科研基金资助项目(20110032110034)
【CateGory Index】: X924.4
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