Abstract
The OECD/NEA CSNI Working Group on Risk Assessment has
set up a task group called DIGREL to develop a taxonomy
of failure modes of digital components for the purposes
of probabilistic safety assessment (PSA). A parallel
Nordic activity carried out a pre-study where a
comparison of Nordic experiences and a literature review
was performed. The study showed a wide range of
approaches and solutions to the challenges given by
digital I&C, and also indicated that no state-of-the-art
currently exists. An existing simplified PSA model has
been complemented with fault tree models for a
four-redundant distributed and diversified protection
system in order to study and demonstrate the effect of
design features and modelling approaches. The model has
been used to test the effect of different levels of
modelling detail, CCF modelling fail-safe principle and
voting logic. The paper will present results of the
experiments with the model
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the International Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2013 |
| Place of Publication | La Grange Park |
| Publisher | American Nuclear Society (ANS) |
| ISBN (Print) | 978-0-89448-702-6 |
| Publication status | Published - 2013 |
| MoE publication type | A4 Article in a conference publication |
| Event | International Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2013 - Columbia, United States Duration: 22 Sept 2013 → 26 Sept 2013 |
Conference
| Conference | International Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2013 |
|---|---|
| Abbreviated title | PSA 2013 |
| Country/Territory | United States |
| City | Columbia |
| Period | 22/09/13 → 26/09/13 |
Keywords
- probabilistic safety assessment
- digital I&C
- reliability analysis
- failure mode
- taxonomy