Model for Assessing the Safety Integrity Level of Electrical/ Electronic/Programmable Electronic Safety-Related Systems

Esperanza S. Torres, Srinivas Sriramula, David Celeita, Gustavo Ramos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nowadays, different industries such as nuclear, automotive, process, chemical, and oil gas industry, must meet specific requirements in order to keep and reduce safety risks to as low as reasonably practicable (ALARP) level. As a result, the number of electrical/electronic/programmable electronic safety-related systems (E/E/PES) to control, prevent and mitigate hazardous events has increased. Moreover, new guidelines and procedures have been developed to guarantee the availability and function of safety systems over their service life. Based on Markov processes, this paper proposes a reliability model to assess the integrity and verify the design of E/E/PES safety-related systems. The average probability of failure on demand (PFDavg) and Safety Integrity Level (SIL), are used to determine the reliability performance of an E/E/PES in a low demand mode of operation in accordance with the functional safety principles of the IEC 61508 and IEC 61511 standards.

Original languageEnglish
Title of host publicationIEEE Industry Applications Society Annual Meeting
Subtitle of host publicationIAS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages7
ISBN (Electronic)9781538645390
ISBN (Print)9781538645406
DOIs
Publication statusE-pub ahead of print - 28 Nov 2019

Publication series

NameIEEE Industry Applications Society Annual Meeting
PublisherIEEE
ISSN (Print)0197-2618
ISSN (Electronic)2576-702X

Keywords

  • functional safety
  • IEC 61508
  • Markov processes
  • probability of failure on demand
  • reliability assessment
  • Safety integrity level

Fingerprint Dive into the research topics of 'Model for Assessing the Safety Integrity Level of Electrical/ Electronic/Programmable Electronic Safety-Related Systems'. Together they form a unique fingerprint.

  • Cite this

    Torres, E. S., Sriramula, S., Celeita, D., & Ramos, G. (2019). Model for Assessing the Safety Integrity Level of Electrical/ Electronic/Programmable Electronic Safety-Related Systems. In IEEE Industry Applications Society Annual Meeting: IAS 2019 [8911982] (IEEE Industry Applications Society Annual Meeting). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IAS.2019.8911982