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Development of an analytical method to break logical loops at the system level

Author

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  • Jung, Woo Sik
  • Han, Sang Hoon

Abstract

Logical loops or circular logics are interpreted as circular supporting relations among systems or their fault trees. The logical loops are located in the merged fault tree that is created by combining the system fault trees. The inconsistent manual breaking of the logical loops could be one of the major sources of the uncertainty in the fault tree analysis. This paper presents an analytical method to break the logical loops at the system level. The analytical solution at the system level is obtained in a mathematical way without an actual manipulation of the fault tree. Then, the actual manipulation of the fault tree in the analytical solution is performed and the resultant broken fault tree is solved by the fault tree quantifier.

Suggested Citation

  • Jung, Woo Sik & Han, Sang Hoon, 2005. "Development of an analytical method to break logical loops at the system level," Reliability Engineering and System Safety, Elsevier, vol. 90(1), pages 37-44.
    • Handle: RePEc:eee:reensy:v:90:y:2005:i:1:p:37-44
    DOI: 10.1016/j.ress.2004.10.005
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    Cited by:

    1. Vaurio, Jussi K., 2007. "A recursive method for breaking complex logic loops in Boolean system models," Reliability Engineering and System Safety, Elsevier, vol. 92(10), pages 1473-1475.
    2. Lim, Ho-Gon & Jang, Seung-Cheol, 2007. "An analytic solution for a fault tree with circular logics in which the systems are linearly interrelated," Reliability Engineering and System Safety, Elsevier, vol. 92(6), pages 804-807.
    3. Matsuoka, Takeshi, 2023. "Reliability analysis of a BWR plant system at startup stage  - analysis by the GO-FLOW methodology with consideration of loop structures and phased mission problem -," Reliability Engineering and System Safety, Elsevier, vol. 233(C).

    More about this item

    Keywords

    Logical loop; Fault tree;

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