Abstract
The paper summarises the results of an international
project to benchmark risk-informed in-service inspection
(RI-ISI) methodologies. The overall objective of the
project was to apply various RI-ISI methodologies to the
same case, i.e. selected piping systems in one nuclear
power plant. The scope of the benchmark was limited to
four systems, but the variety regarding safety class,
potential degradation mechanisms and pipe break
consequences ensured a good coverage of issues for a
comparative study. The risk-informed methodologies showed
some significant differences and resulted in slightly
different risk ranking and selection of inspection sites.
However, the results of the benchmark indicated that the
risk impact of these differences is small, and the RI-ISI
approaches identify safety important piping segments that
are ignored by approaches not using the probabilistic
safety assessment (PSA). The results of the benchmark
exercise RISMET improve the knowledge on differences in
approaches and their impact on plant safety, and promote
the use of risk-informed ISI.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 7th International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurised Components |
| Editors | Michel Bièth |
| Place of Publication | Luxembourg |
| Publisher | European Commission EC |
| Pages | 55-61 |
| ISBN (Print) | 978-92-79-14562-9 |
| Publication status | Published - 2009 |
| MoE publication type | A4 Article in a conference publication |
| Event | 7th International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurised Components - Yokohama, Japan Duration: 12 May 2009 → 14 May 2009 |
Conference
| Conference | 7th International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurised Components |
|---|---|
| Country/Territory | Japan |
| City | Yokohama |
| Period | 12/05/09 → 14/05/09 |
Keywords
- Risk informed in-service inspections
- piping systems