Focus of the present study is placed on the passive system reliability assessment issue, with reference to the thermal-hydraulic passive systems (i.e. relying on natural circulation): an approach based on system relevant performance parameters is introduced, to provide system significant availability and reliability figures, within a reliability physics framework. The method, which is referred to as functional reliability, exploits the fact that, for thermal-hydraulic passive systems to perform as expected to accomplish the required mission, parameters must lie between certain limits, according to defined safety criteria. Some relevant physical parameters are worth considering as significant indicators of thermal-hydraulic passive system performance, as for instance coolant flow rate or exchanged thermal power. Within this methodology, the selected representative parameters defining the system performance are properly modelled through the construction of joint probability functions, in order to assess the correspondent functional reliability. The application of the methodology to a realistic passive system design is illustrated. © 2009 Taylor amp; Francis Group.
|Publication status||Published - 2009|
|Event||Joint ESREL (European Safety and Reliability) and SRA-Europe (Society for Risk Analysis Europe) Conference - , Spain|
Duration: 1 Jan 2009 → …
|Conference||Joint ESREL (European Safety and Reliability) and SRA-Europe (Society for Risk Analysis Europe) Conference|
|Period||1/1/09 → …|
All Science Journal Classification (ASJC) codes
- Safety, Risk, Reliability and Quality
- Safety Research
Burgazzi, L. (2009). Bivariate distribution based passive system performance assessment. Paper presented at Joint ESREL (European Safety and Reliability) and SRA-Europe (Society for Risk Analysis Europe) Conference, Spain.