Abstract
This paper gives the results of the probabilistic analysis of the seismic resistance of nuclear power plant (NPP) structures. The seismic probabilistic safety assessment based on the requirements of the agency IAEA and US NRC are presented. On the base of the geophysical and seismological monitoring of locality the peak ground acceleration and the spectrum of the acceleration was defined for the return period 104 years. There is showed summary of calculation models and calculation methods for the probability analysis of the structural safety considering load, material and model uncertainties. The numerical simulations were realized in the system ANSYS. The results from the safety analysis of the NPP structures with reactor VVER440 are presented.
Highlights
IAEA (International Atomic Energy Agency) set up a program [1] to give guidance to its member states on the many aspects of the safety of nuclear power reactors
The earthquake resistance analysis of NPP buildings in Slovakia were based on the recommends of international organization IAEA in Vienna to get international safety level of the nuclear power plants [5]
This paper presented the deterministic and probabilistic methodology to analysis the seismic safety of NPP in Slovakia [3-5]
Summary
IAEA (International Atomic Energy Agency) set up a program [1] to give guidance to its member states on the many aspects of the safety of nuclear power reactors. The risk of the NPP performance from the point of the safety must be calculated by consideration of the impact of the all effects during plant operation. The PSA (Probabilistic Safety Analysis) is one from the effective methods to analyse the safety and reliability of the NPP. The international standard NUREG [2] defines the principal steps for the calculation of the risk of the NPP performance by LHS probabilistic method.
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