PSAM 16 Conference Paper Overview
Welcome to the PSAM 16 Conference paper and speaker overview page.
Lead Author: Sergey Galushin Co-author(s): Anders Riber Marklund anders.ribermarklund@vysusgroup.com Anders Olsson anders.olsson@vysusgroup.com Ola Bäckström ola.backstrom@lr.org Dmitry Grishchenko dmitrygr@kth.se Pavel Kudinov pkudinov@kth.se
Presenter of this paper: Anders Olsson (anders.olsson@vysusgroup.com)
Presenter of this paper: Anders Olsson (anders.olsson@vysusgroup.com)
| Treatment of Phenomenological Uncertainties in Level 2 PSA for Nordic BWR Using Risk Oriented Accident Analysis Methodology |
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| A comprehensive and robust assessment of phenomenological uncertainties is a challenge for the current real-life PSA L2 applications, since such uncertainty is majorly driven by physical phenomena and timing of events. Typically, the static PSA models are built on a pre-determined set of scenario parameters to describe the accident progression sequence and use a limited number of simulations in the underlying deterministic analysis to evaluate the consequences. The Risk Oriented Accident Analysis Methodology (ROAAM+) has been developed to enable consistent and comprehensive treatment of both epistemic and aleatory sources of uncertainty in risk quantification. The framework is comprised of a set of deterministic models that simulate different stages of the accident progression, and a probabilistic platform that performs quantification of the uncertainty in conditional containment failure probability. This information is used for enhanced modeling in the PSA-L2 for improved definition of sequences, where information from the ROAAM is used to refine PSA model resolution regarding risk important accident scenario parameters, that can be modelled within the PSA. This work presents an example of application of the dynamic approach in a large-scale PSA model and demonstrate the integration of the ROAAM+ results in the PSA model. |
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Author and Presentation Info
Lead Author Name: Sergey Galushin (sergey.galushin@vysusgroup.com)
Bio: PhD in Nuclear Engineering (Royal Institute of Technology, Sweden). Main areas of interest: Severe accident, severe accident phenomena, PSA L1 and L2, sensitivity and uncertainty analysis.
Country: Sweden
Company: Vysus Sweden AB
Job Title: Senior consultant
Presenter Name: Anders Olsson (anders.olsson@vysusgroup.com)
Bio: Anders Olsson holds a master’s degree in Mechanical Engineering and has since 1995 been working in the nuclear industry. He started at ABB Atom where he mainly performed various thermal hydraulic analysis and worked with structural verification. Since 1999 his main focus has been Probabilistic Risk Assessment where he now has extensive experience in PSA Level 1 and 2 for all operating modes including Human Reliability Analysis. He also holds a position as Vice President in Vysus Group with responsibility for the operation of the nuclear consultancy in Sweden.
Country: Sweden
Company: Vysus Group
Job Title: Vice President Nuclear
Bio: PhD in Nuclear Engineering (Royal Institute of Technology, Sweden). Main areas of interest: Severe accident, severe accident phenomena, PSA L1 and L2, sensitivity and uncertainty analysis.
Country: Sweden
Company: Vysus Sweden AB
Job Title: Senior consultant
Presenter Name: Anders Olsson (anders.olsson@vysusgroup.com)
Bio: Anders Olsson holds a master’s degree in Mechanical Engineering and has since 1995 been working in the nuclear industry. He started at ABB Atom where he mainly performed various thermal hydraulic analysis and worked with structural verification. Since 1999 his main focus has been Probabilistic Risk Assessment where he now has extensive experience in PSA Level 1 and 2 for all operating modes including Human Reliability Analysis. He also holds a position as Vice President in Vysus Group with responsibility for the operation of the nuclear consultancy in Sweden.
Country: Sweden
Company: Vysus Group
Job Title: Vice President Nuclear