A Multi-State Physics Modeling approach for the reliability assessment of Nuclear Power Plants piping systemsReportar como inadecuado




A Multi-State Physics Modeling approach for the reliability assessment of Nuclear Power Plants piping systems - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

* Corresponding author 1 Dipartimento di Energia 2 Chaire Sciences des Systèmes et Défis Energétiques EDF-ECP-Supélec LGI - Laboratoire Génie Industriel - EA 2606, SSEC - Chaire Sciences des Systèmes et Défis Energétiques EDF-ECP-Supélec 3 Department of Computing and the Digital Environment, Faculty of Engineering and Computing

Abstract : A Multi-State Physics Modeling MSPM approach is here proposed for degradation modeling and failure probability quantification of Nuclear Power Plants NPPs piping systems. This approach integrates multi-state modeling to describe the degradation process by transitions among discrete states e.g., no damage, micro-crack, flaw, rupture, etc., with physics modeling by physic equations to describe the continuous degradation process within the states. We propose a Monte Carlo MC simulation method for the evaluation of the time-dependent transition rates between the states of the MSPM. Accountancy is given for the uncertainty in the parameters and external factors influencing the degradation process. The proposed modeling approach is applied to a benchmark problem of a piping system of a Pressurized Water Reactor PWR undergoing thermal fatigue. The results are compared with those obtained by a continuous-time homogeneous Markov Chain Model.

Keywords : Markov Chain Model Multi-State Physics Modeling Degradation process Piping reliability Monte Carlo time-dependant transition rates Nuclear Power Plant





Autor: Francesco Di Maio - Davide Colli - Enrico Zio - Liu Tao - Jiejuan Tong -

Fuente: https://hal.archives-ouvertes.fr/



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