Demonstrating and argumenting safety of I&C systems: challenges and recent experiences

Janne Valkonen, Teemu Tommila, Joonas Linnosmaa, Peter Karpati, Vikash Katta

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

Abstract

Nuclear licensees are required to submit a documented justification of the safety of the plant and its systems to the local regulatory body. Developing this documentation is a hard task and requires a lot of effort from several stakeholders. It should be understandable, transparent, convincing and complete. Observations from the current practice indicate that the nuclear power industry would benefit from more structured, systematic and harmonized practices in engineering instrumentation and control (I&C) systems and justifying their safety. This paper describes recently recognized challenges in demonstrating the safety of digital I&C systems and suggests possible ways to solve them. Some of the proposed solutions are light improvements in the everyday documentation practices, working methods and utilization of computerized support tools, while others would involve fundamental changes in the design and documentation philosophy that are more demanding to implement.
Original languageEnglish
Title of host publicationNuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC&HMIT 2017)
PublisherAmerican Nuclear Society ANS
Pages568-580
ISBN (Electronic)978-0-89448-738-5
ISBN (Print)978-0-89448-743-9
Publication statusPublished - 2017
MoE publication typeA4 Article in a conference publication
Event10th International Topical Meeting on Nuclear Plant Instrumentation, Control and Human Machine Interface Technologies, NPIC & HMIT 2017 - San Francisco, United States
Duration: 11 Jun 201715 Jun 2017

Conference

Conference10th International Topical Meeting on Nuclear Plant Instrumentation, Control and Human Machine Interface Technologies, NPIC & HMIT 2017
Abbreviated titleNPIC & HMIT 2017
CountryUnited States
CitySan Francisco
Period11/06/1715/06/17

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Keywords

  • safety demonstration
  • model-based systems engineering
  • safety argumentation
  • nuclear I&C

Cite this

Valkonen, J., Tommila, T., Linnosmaa, J., Karpati, P., & Katta, V. (2017). Demonstrating and argumenting safety of I&C systems: challenges and recent experiences. In Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC&HMIT 2017) (pp. 568-580). American Nuclear Society ANS. http://www.vtt.fi/inf/julkaisut/muut/2017/OA-Demonstrating-and-argumenting-safety.pdf