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http://dx.doi.org/10.12812/ksms.2012.14.1.225

Development and Implementation of Measures for Structural and Reliability Importance by Using Minimal Cut Sets and Minimal Path Sets  

Choi, Sung-Woon (Dept. of Industrial Engineering, Gachon University)
Publication Information
Journal of the Korea Safety Management & Science / v.14, no.1, 2012 , pp. 225-233 More about this Journal
Abstract
The research discusses interrelationship of structural and reliability importance measures which used in the probabilistic safety assessment. The most frequently used component importance measures, such as Birnbaum's Importance (BI), Risk Reduction (RR), Risk Reduction Worth (RRW), RA (Risk Achievement), Risk Achievement Worth (RAW), Fussel Vesely (FV) and Critically Importance (CI) can be derived from two structure importance measures that are developed based on the size and the number of Minimal Path Set (MPS) and Minimal Cut Set (MCS). In order to show an effectiveness of importance measures which is developed in this paper, the three representative functional structures, such as series-parallel, k out of n and bridge are used to compare with Birnbaum's Importance measure. In addition, the study presents the implementation examples of Total Productive Maintenance (TPM) metrics and alternating renewal process models with exponential distribution to calculate the availability and unavailability of component facility for improving system performances. System state structure functions in terms of component states can be converted into the system availability (unavailability) functions by substituting the component reliabilities (unavailabilities) for the component states. The applicable examples are presented in order to help the understanding of practitioners.
Keywords
Structural and Reliability Importance; MCS; MPS; Series-Parallel; k Out of n; Bridge; State Structure Function; Component States; TPM Metrics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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