PSAM 16 Conference Paper Overview
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Lead Author: Erik Sparre Co-author(s): Carl Eriksson, carl.eriksson@riskpilot.se
Mattias Håkansson, mattias.hakansson@riskpilot.se
Jacob Larsson, jacob.larsson@riskpilot.se
Gunnar Johanson, gunnar.johanson@riskpilot.se
| Project DIOR (Deeper Investigation of Repairability of Failures) |
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| The overall purpose of the DIOR project is to better understand failure data used in PRA models. A deeper knowledge about repairability, timing of failures, which failures (causes, coupling mechanisms) occur early/late etcetera gives the analyst valuable insights when developing state-of-the-art PSA models. Such knowledge can be relevant when introducing repair into PRA models, how to assign failure data for longer time windows, definition of CCF (concerning for example failure modes and repair possibilities). Information about single failures in Nordic Nuclear Power Plants is gathered in the so-called TUD-database. This database has primarily been used to calculate failure probabilities and failure rates for components, but since the database also contains information about repair times, and other timing information, it is possible to calculate measures such as mean time to repair (MTTR). Information about CCFs is collected within the ICDE-project and compiled in databases. Therefore, events from the TUD and ICDE databases have been analyzed for a selected number of components (centrifugal pumps, diesel generators and batteries). Data has been evaluated regarding severity of failures, repair times, waiting times etcetera. In the presentation at the PSAM 16, results and conclusions from the DIOR project will be presented. |
Paper ER221 Preview
Author and Presentation Info
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