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Case Study on the Assessment of SIL Using FMEDA

FMEDA 기법을 적용한 SIL 등급 판정에 관한 사례연구

  • Kim, Byung Chul (Department of Automotive Engineering, Hanyang University) ;
  • Kim, Young Jin (Department of Systems Management and Engineering, Pukyong National University)
  • 김병철 (한양대학교 미래자동차공학과) ;
  • 김영진 (부경대학교 시스템경영공학과)
  • Received : 2012.07.16
  • Accepted : 2012.09.07
  • Published : 2012.12.01

Abstract

As the number, complexity and interaction of electrical, electronic and programmable electronic (E/E/PE) systems increase, a growing emphasis has been placed on the concept of functional safety during product development. IEC 61508 provides guidelines and standardized procedures in the development of reliable and dependable E/E/PE systems to assure functional safety. Determining risk classes (i.e., safety integrity levels, SILs) associated to a specific E/E/PE item may be recognized as one of the most crucial activities in the product development per IEC 61508 since SILs are used to specify necessary safety requirements for achieving an acceptable residual risk. This article presents a case study on the assessment of SILs applying failure modes, effects and diagnostic analysis (FMEDA) from which failure rates may be derived for each important failure category by combining a standard FMEA with online diagnostic techniques.

Keywords

References

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