In this paper we present an approach for the evaluation and assessment of the impact of software failures in software-based I&C systems of NPPs. The proposed two-step approach includes at the first step the identification of software failure modes on the basis of review of operating experience gained with software-based I&C systems and equipment. All probable software failures in software-based I&C systems should be identified and classified according to e. g. the concerned system, the observed software failure mode and to their actual and potential safety relevance. In a second step an evaluation of the potential impact of identified safety relevant software failure modes in a software-based I&C system shall be performed. The evaluation shall be done by means of a failure mode and effects analysis (FMEA) using a generic model of the software-based I&C system, i.e. software failure modes are postulated in the I&C system and their potential safety-relevant impact is analyzed.
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2016 24th International Conference on Nuclear Engineering
June 26–30, 2016
Charlotte, North Carolina, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5001-5
PROCEEDINGS PAPER
Approach for the Evaluation of the Impact of Potential Software Failures in Software-Based Instrumentation and Control (I&C) Equipment in Nuclear Power Plants Available to Purchase
Hervé Mbonjo,
Hervé Mbonjo
Gesellschaft fuer Anlagen- und Reaktorsicherheit (GRS) gGmbH, Cologne, Germany
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Manuela Jopen,
Manuela Jopen
Gesellschaft fuer Anlagen- und Reaktorsicherheit (GRS) gGmbH, Cologne, Germany
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Birte Ulrich,
Birte Ulrich
Gesellschaft fuer Anlagen- und Reaktorsicherheit (GRS) gGmbH, Cologne, Germany
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Dagmar Sommer
Dagmar Sommer
Gesellschaft fuer Anlagen- und Reaktorsicherheit (GRS) gGmbH, Cologne, Germany
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Hervé Mbonjo
Gesellschaft fuer Anlagen- und Reaktorsicherheit (GRS) gGmbH, Cologne, Germany
Manuela Jopen
Gesellschaft fuer Anlagen- und Reaktorsicherheit (GRS) gGmbH, Cologne, Germany
Birte Ulrich
Gesellschaft fuer Anlagen- und Reaktorsicherheit (GRS) gGmbH, Cologne, Germany
Dagmar Sommer
Gesellschaft fuer Anlagen- und Reaktorsicherheit (GRS) gGmbH, Cologne, Germany
Paper No:
ICONE24-60897, V001T04A017; 5 pages
Published Online:
October 25, 2016
Citation
Mbonjo, H, Jopen, M, Ulrich, B, & Sommer, D. "Approach for the Evaluation of the Impact of Potential Software Failures in Software-Based Instrumentation and Control (I&C) Equipment in Nuclear Power Plants." Proceedings of the 2016 24th International Conference on Nuclear Engineering. Charlotte, North Carolina, USA. June 26–30, 2016. V001T04A017. ASME. https://doi.org/10.1115/ICONE24-60897
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