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Probability of Failure on Demand in IEC 61508

  • Shimodaira T
  • Takeda I
  • Suyama K
  • et al.
Springer London, (2004), 2404-2409
DOI: 10.1007/978-0-85729-410-4_386
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Abstract

This paper presents a new and explicit approach for estimation of average Probability of Failure to perform its design function on Demand (PFD), based on the expectations of fault duration / repair time in accordance with IEC 61508. From a practical viewpoint, the formula for estimation of PFD of the negligible Mean Time To Repair (MTTR) configuration Safety-Related System (SRS) operated in low and short duration demand mode is feasible for the non-negligible MTTR configuration SRS with no self-diagnostic function.

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Shimodaira, T., Takeda, I., Suyama, K., & Sato, Y. (2004). Probability of Failure on Demand in IEC 61508. In Probabilistic Safety Assessment and Management (pp. 2404–2409). Springer London. https://doi.org/10.1007/978-0-85729-410-4_386

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