Feasibility study on the integration of PRA methods and model checking

Jussi Lahtinen, Kim Björkman

Research output: Book/ReportReportProfessional

Abstract

Digital instrumentation and control (I&C) systems play an important role in the operation of nuclear power plants (NPP). The safety and reliability analysis of such systems is challenging. We have focused on the use of two methods: model checking for verifying the correctness of I&C systems, and fault tree analysis (FTA) in the context of probabilistic risk assessment (PRA). Model checking is a formal method capable of exhaustively analysing system behaviour. Fault tree analysis is a top down approach used for failure analysis. Neither approach can sufficiently analyse situations involving both software design errors and hardware failures. In this paper, we look for different ways to solve this issue and to integrate and couple these two methods to enable more extensive or practical safety analysis of digital I&C systems. We identify several potential integration approaches and analyse their feasibility. We also propose a concrete concept-level coupling approach, and experiment with it in practice using a small example model.
Original languageEnglish
PublisherVTT Technical Research Centre of Finland
Number of pages26
Publication statusPublished - 2015
MoE publication typeD4 Published development or research report or study

Publication series

NameResearch Report
PublisherVTT
VolumeVTT-R-04924-15

Fingerprint

Fault tree analysis
Model checking
Risk assessment
Formal methods
Software design
Reliability analysis
Nuclear power plants
Failure analysis
Concretes
Hardware
Experiments

Keywords

  • probabilistic risk assessment
  • model checking
  • integration
  • nuclear
  • automation

Cite this

Lahtinen, J., & Björkman, K. (2015). Feasibility study on the integration of PRA methods and model checking. VTT Technical Research Centre of Finland. VTT Research Report, Vol.. VTT-R-04924-15
Lahtinen, Jussi ; Björkman, Kim. / Feasibility study on the integration of PRA methods and model checking. VTT Technical Research Centre of Finland, 2015. 26 p. (VTT Research Report, Vol. VTT-R-04924-15).
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Lahtinen, J & Björkman, K 2015, Feasibility study on the integration of PRA methods and model checking. VTT Research Report, vol. VTT-R-04924-15, VTT Technical Research Centre of Finland.

Feasibility study on the integration of PRA methods and model checking. / Lahtinen, Jussi; Björkman, Kim.

VTT Technical Research Centre of Finland, 2015. 26 p. (VTT Research Report, Vol. VTT-R-04924-15).

Research output: Book/ReportReportProfessional

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Lahtinen J, Björkman K. Feasibility study on the integration of PRA methods and model checking. VTT Technical Research Centre of Finland, 2015. 26 p. (VTT Research Report, Vol. VTT-R-04924-15).