Abstract
The OECD/NEA CSNI Working Group on Risk Assessment
(WGRisk) 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. 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 presents results of the experiments with the model.
| Original language | English |
|---|---|
| Pages | Paper S5-9 |
| Publication status | Published - 2013 |
| MoE publication type | Not Eligible |
| Event | Nordic PSA Conference - Castle Meeting 2013 - Stockholm, Sweden Duration: 10 Apr 2013 → 12 Apr 2013 |
Conference
| Conference | Nordic PSA Conference - Castle Meeting 2013 |
|---|---|
| Country/Territory | Sweden |
| City | Stockholm |
| Period | 10/04/13 → 12/04/13 |
Keywords
- probabilistic safety assessment
- digital I&C
- reliability analysis
- failure mode
- taxonomy