Evaluation of Uncertainties in Relation to Severe Accidents and
Level-2 Probabilistic Safety Analysis

Workshop Proceedings
Aix-en-Provence, France
7-9 November 2005

Uncertainty in relation to several severe accident phenomena plays a major role in probabilistic safety analyses involving beyond-design-basis accident scenarios for nuclear power plants. The technical papers presented herein will be valuable for nuclear safety analysts, nuclear power plant designers and R&D managers, especially with regard to unresolved severe accident issues or issues where risk uncertainty is high.

Session IV: Applications to Uncertainty Assessment in Level 2 PSA

18. Paper: Gabor LAJTHA et al, VEIKI, Hungary. Uncertainty of the Level 2 PSA for NPP Paks.
Presentation

19. Paper: Satu SILTANEN, Fortum Nuclear Services Ltd, Finland. Severe Accident Management at the Loviisa NPP - Application of Integrated ROAAM and PSA level 2.
Presentation

20. Paper: Hossein NOURBAKHSH and T. S. KRESS, USNRC, United States. Assessment of Phenomenological Uncertainties in Level 2 PRAs.
Presentation

21. Paper: Emanuel RAIMOND et al, Institut de Radioprotection et de Sûreté Nucléaire (IRSN), France. Method Implemented by the IRSN for the Evaluation of Uncertainties in Level 2 PSA Example of release calculation and perspectives of application.
Presentation

22. Paper: Bernard CHAUMONT et al, France. Severe Accident Research Network (SARNET). Level 2 PSA Work Package: Comparison of Partners Methods for Uncertainties Assessment.
Presentation

23. Paper: Morgan J. BROWN et al, Atomic Energy of Canada Limited (AECL), Canada. Influence of Coolant Phase Separation on Event Timing During a Severe Core Damage Accident in a Generic CANDU 6 Plant.
Presentation

24. Paper: Osamu KAWABATA and Mitsuhiro KAJIMOTO, Japan Nuclear Energy Safety Organisation (JNES), Japan. Uncertainty Analysis on Containment Failure Frequency for a Japanese PWR Plant
Presentation

25. Paper: Francesco D'AURIA et al., University of Pisa, Italy. Origins of the Uncertainty and Methods
Presentation

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Last updated: 14 March 2007