DOI QR코드

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기능안전의 구현을 통한 Systematic Failure의 감축에 관한 연구

On the Reduction of Systematic Failure by Realizing a Method for Functional Safety

  • 투고 : 2013.10.20
  • 심사 : 2013.12.06
  • 발행 : 2013.12.31

초록

Due to the recent advances in technology, the systems are becoming more demanding in terms of functionality and implementation complexity. Therefore, when system failures are involved in such complex systems, the effects of the related safety issues can also be more serious, thereby causing in the worst case irrecoverable hazards on both human being and properties. This fact can be witnessed in the recent rail systems accidents. In general, the accidents can be attributed to the systematic failure or the random failure. The latter is due to the aging or unsatisfied quality of the parts used in implementation or some unexpected external cause that would otherwise result in accidents whereas the former is usually related to incomplete systems design. As the systems are becoming more complex, so are the systematic failures. The objective of the paper is to study an approach to solving the systematic failure. To do so, at first the system design process is augmented by the functional safety activities that are suggested in the standard IEC 61508. Analyzing the artifacts of the integrated process yields the traceability, which satisfies the requirements for reduction of systematic failure as provided in ISO 26262. In order to reduce systematic failure, the results are utilized in the conceptual design stage of systems development in which systems requirements are generated and functional architecture is developed.

키워드

참고문헌

  1. Kazimierz Kosmowski, "Functional safety concept for hazardous systems and new challenges," Journal of Loss Prevention in the Process Industries, vol. 19, pp. 298-308, Jun. 5, 2006. https://doi.org/10.1016/j.jlp.2005.06.003
  2. Maddalena Casamirra, Francesco Castiglia, Mariarosa Giardina, and C Lombardo, "Safety studies of a hydrogen refuelling station: Determination of the occurrence frequency of the accidental scenarios," International Journal of Hydrogen Energy, vol. 34, no. 14, pp. 5846-5854, Jul. 2009. https://doi.org/10.1016/j.ijhydene.2009.01.096
  3. Y.M. Chen, K. S. Fan, and L. C. Chen, "Requirem ents and Functional Analysis of a Multi-Hazard Disaster-Risk Analysis," Human and Ecological Risk Assessment : An International Journal, vol. 16, no. 2, pp. 413-428, Apr. 9, 2010. https://doi.org/10.1080/10807031003672895
  4. Road vehicles -- Functional safety --, International Organization for Standardization Standard, ISO 26262, 2011.
  5. M. Bellotti and R. Mariani, "How future automotive functional safety requirements will impact microprocessors design," Microelectronic Reliability, vol. 50, no. 9-11, pp. 1320-1326, Sep 2010. https://doi.org/10.1016/j.microrel.2010.07.041
  6. P. J. Wilkinson and T. P. Kelly, "Functional hazard analysis for highly integrated aerospace systems," in Proc. IEE Certification of Ground/Air Systems Seminar, London, UK, Feb 17, 1999.
  7. C. A. Ericson, Hazard Analysis Techniques for System Safety. Hoboken, NJ: WILEY, 2005.
  8. Systems Engineering Management, Department of Defense Standard, MIL STD 499B, 1994.
  9. Functional safety of electrical/ electronic/ program mable electronic safety-related systems, International Electrotechnical Commission Standard, IEC 61508, 2010.