Abstract
The power installation is one of the critical subsystems in NPP since it provides power to cooling system for performing safety operations. The paper studies the reliability modeling and evaluation of the power installation based on the Control Block Diagram. The Reliability Block Diagram (RBD) method is an efficient, immediate scheme for computing the system reliability. However, the current RBD is only applicable for static system and cannot solve the dynamic case. A straightforward RBD is proposed for evaluating the reliability of the power installation which has multi faults and dynamic states. Since previous methodologies for estimating the fault coverage are only suitable for i.i.d case, exponential moving weighted average method is modified to estimate the fault coverage of dependent cases, based on a voting mechanism. The presented framework is efficient in evaluating the reliability of the power installation without knowing all system states in advance, and reduces computational complexity compared with common used Markov methods. Case study is provided to illustrate the accuracy and effectiveness of the proposed framework.
| Original language | English |
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| Title of host publication | Safety and Reliability of Complex Engineered Systems - Proceedings of the 25th European Safety and Reliability Conference, ESREL 2015 |
| Publisher | CRC Press/Balkema |
| Pages | 1651-1657 |
| ISBN (Print) | 9781138028791 |
| Publication status | Published - 2015 |
| Event | 25th European Safety and Reliability Conference, ESREL 2015 - Zurich, Swaziland Duration: 7 Sept 2015 → 10 Sept 2015 |
Conference
| Conference | 25th European Safety and Reliability Conference, ESREL 2015 |
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| Place | Swaziland |
| City | Zurich |
| Period | 7/09/15 → 10/09/15 |