Actual Problems of the Safety and Reliability of the NPP Structures in Slovakia

Abstract:

The last accidents of the NPP in Chernobyl and Fukushima give us the new inspiration to verify the safety level of the NPP structures. This paper presents the new requirements to test of the safety and reliability of the NPP structures due to the last accidents in the world. The risk assessment to verify of the safety and reliability of the NPP structures based on probabilistic and nonlinear analysis is presented. The uncertainties of the loads level (long-time temperature and dead loads), the material model (concrete cracking and crushing, behaviour of the reinforcement and liner), degradation effects and other influences following from the inaccuracy of the calculated model and numerical methods were taken into account in the LHS method. The results of the deterministic and probabilistic analysis of the NPP structures are presented.

• Periodical: Key Engineering Materials (Volume 738)
• Pages: 261-272
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.738.261
• Online since: June 2017
• Authors: Juraj Kralik*
• Keywords: Extreme Loads, Nonlinearity, Nuclear Power Plant (NPP), Probability, Safety, Stress Test, Water-Water Energetic Reactor (VVER)

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