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Probability Nonlinear Analysis of NPP Reinforced Concrete Structure Failure Considering Degradation Effects and High Internal Overpressure

Domenii publicaţii > Stiinte ingineresti + Tipuri publicaţii > Articol în volumul unei conferinţe

Autori: Králik,J

Editorial: Safety and Reliability for Managing Risk , European Safety and Reliability Conference (ESREL 2006), Date: SEP 18-22, 2006 Estoril PORTUGAL, 1-3 , p.1483-1491, 2006.

Rezumat:

This paper describes the reliability analysis of concrete containment for VVER 440 under high internal overpressure. There is showed summary of calculation models and calculation
methods for the probability analysis of the structural integrity considering degradation effects and high internal overpressure. The probabilistic structural analysis (PSA) aims at an assessment of the probability of the concrete structure failure under excessive overpressure. In the non-linear analysis of the concrete structures a layered approximation of the shell elements with various
material properties has been included. The uncertainties of the loads level (long-time temperature and dead loads), the material properties (concrete cracking and crushing, reinforcement, and liner), degradation effects and other influences following the inaccuracy of the calculated model and numerical methods were taking in the account in the 10(6) direct MONTE CARLO
simulations.

Cuvinte cheie: Nuclear Power Plant, Structural safety, Degradation, Probability, Monte-Carlo,

URL: http://www.svf.stuba.sk/kat/SME