Verification of fault tolerant safety I&C systems using model checking

Antti Pakonen, Igor Buzhinsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

2 Citations (Scopus)

Abstract

Model checking has been successfully used for detailed formal verification of instrumentation and control (I&C) systems, as long as the focus has been on the application logic, alone. In safety-critical applications, fault tolerance is also an important aspect, but introducing I&C hardware failure modes to the formal models comes at a significant computational cost. Previous attempts have led to state space explosion, and prohibitively long processing times. In this paper, we present a method for adding hardware component failures and communication delays into I&C application logic models for the NuSMV symbolic model checker. Based on a case study built around a semi-fictitious, four-redundant nuclear power plant protection system, we demonstrate how even detailed system designs can be verified, if the focus is kept on single failure tolerance.

Original languageEnglish
Title of host publicationProceedings of the 20th IEEE International Conference on Industrial Technology, ICIT 2019
PublisherIEEE
Pages969-974
Number of pages6
ISBN (Electronic)9781538663769
DOIs
Publication statusPublished - 1 Feb 2019
MoE publication typeA4 Article in a conference publication
EventIEEE International Conference on Industrial Technology - Melbourne, Australia
Duration: 13 Feb 201915 Feb 2019

Publication series

NameProceedings of the IEEE International Conference on Industrial Technology
Volume2019-February
ISSN (Print)2641-0184
ISSN (Electronic)2643-2978

Conference

ConferenceIEEE International Conference on Industrial Technology
Abbreviated titleICIT
CountryAustralia
CityMelbourne
Period13/02/201915/02/2019

Keywords

  • Fault tolerance
  • Formal verification
  • Model checking

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