Nonlinear Probabilistic Analysis of the Failure Pressure of NPP Shielding Plate

Abstract:

This paper describes the nonlinear probabilistic analysis of the failure pressure of the shielding plate of the reactor box of the nuclear power plant under a high internal overpressure and temperature. The scenario of the hard accident in Nuclear power plant (NPP) and the methodology of the calculation of the fragility curve of the failure overpressure using the probabilistic safety assessment PSA 2 level is presented. The fragility curve of the failure pressure was determined using 45 probabilistic simulations using the response surface method (RSM) with the Central Composite Design (CCD) for 10⁶ Monte Carlo simulations for each model and 5 level of the overpressure.

• Periodical: Applied Mechanics and Materials (Volume 837)
• Pages: 214-221
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.837.214
• Online since: June 2016
• Authors: Juraj Kralik, Juraj Kralik Jr., Maros Klabnik, Alzbeta Grmanova
• Keywords: ANSYS, Fragility Curve, Nonlinearity, Nuclear Power Plant, Probabilistic Safety Assessment (PSA), Response Surface Method (RSM)

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