Abstract
Newly built and modernized older nuclear power plants are equipped with digital I&C systems. However, currently there is no specific guidance internationally agreed for modeling of digital I&C systems in PSA. Thus, the OECD Nuclear Energy Agency (NEA) Committee on the Safety of Nuclear Installations (CSNI) Working Group on Risk Assessment (WGRISK) initiated a task called “Digital I&C PSA – Comparative application of DIGital I&C Modeling Approaches for PSA” (DIGMAP) in July 2017. The objective of the task is to compare different modeling approaches and identify possible methods and issues for further development. A simplified boiling water reactor design equipped with digital features is used as a common reference plant for the task. Each participating country develops its own PSA model based on the plant description. Through comparison, different approaches to account for e.g. software reliability, fault-tolerant techniques, and network communication in the PSA will be explored. Nine countries are currently participating in the task. The planned duration for the task is 2017-2020. This paper describes the efforts done so far and presents preliminary results and insights.
Original language | English |
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Title of host publication | International Topical Meeting on Probabilistic Safety Assessment and Analysis (PSA 2019) |
Publisher | American Nuclear Society (ANS) |
Pages | 321-329 |
Number of pages | 9 |
ISBN (Electronic) | 978-0-89448-763-7 |
ISBN (Print) | 978-0-89448-764-4 |
Publication status | Published - 3 May 2019 |
MoE publication type | A4 Article in a conference publication |
Event | 16th ANS International Conference on Probabilistic Safety Assessment & Analysis, PSA 2019: International Topical Meeting on Probabilistic Safety Assessment and Analysis - Marriott Charleston, Charleston, United States Duration: 28 Apr 2019 → 3 May 2019 http://psa.ans.org/2019/ |
Conference
Conference | 16th ANS International Conference on Probabilistic Safety Assessment & Analysis, PSA 2019 |
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Abbreviated title | PSA 2019 |
Country/Territory | United States |
City | Charleston |
Period | 28/04/19 → 3/05/19 |
Internet address |
Keywords
- probabilistic risk assessment
- digital I&C
- nuclear safety