[PDF] Top 20 Seismic analysis of the nuclear reactor vessel and internals with using model reduction method

... element analysis model of totally assembled reactor was constructed as shown in Figure ...the reactor vessel and the CSB assembly flange was created through node ...merging ... See full document

... the nuclear reactor system should be ...assessment, seismic responses of the reactor internals should be ...any seismic analysis of nuclear reactor ... See full document

... the seismic analysis was performed separately for reactor coolant system(RCS) and reactor building after these two systems were decoupled ...this method was permitted by the past ... See full document

... water reactor that is currently under licensing review by the US ...EPR™ Nuclear Island (NI) is founded on a common basemat supporting the Reactor Building (RB), Reactor Containment Building ... See full document

... lattice model, using the advanced lattice model with improved boundary conditions and modeling method of rotational soil spring, we compared the results of seismic response analyses and ... See full document

... the analysis was based on the substructure models approach with appropriately separated models for the building structures as well as frequency- independent soil that allows to separate the NPP seismic ... See full document

... the seismic response analysis of the electrical building (de-aerator building) and turrbine building of LNPP unit ...The method of the analysis is direct integration of the dynamic governing ... See full document

... the seismic analysis of reactor building of a Nuclear Power Plant including the soil structure interaction analysis for uniform ...stick model for time history analysis of ... See full document

... analytical model, as shown in ...test model and shell elements for the ...analytical model was fabricated in which the NR test model, as shown in ...The method of modeling the upper and ... See full document

... computation model has been developed particularly for the seismic structural analysis using finite element method of ...the model is obvious from the graphical presentations in ... See full document

... pressure vessel can be designed using the rules of ‘design by formula’ and ‘design by ...a reactor pressure vessel (RPV) using the two ...water reactor (PWR) was selected for the ... See full document

... the method presented below is in the transformation of both types of information into comparable quantities, and the better assessment of complex-process system ... See full document

... vertical model are compared, exciting the corresponding building foundation of the ...vertical model shown in ...axisymmetric model for α =20 with four soil columns in the area of 4 times equivalent ... See full document

... relative method has been widely used in laboratory due to its direct, simple, and accurate elemental ...relative method, no detailed knowledge of the neutron flux,  in the irradiation site or the ... See full document

... to seismic activity. Whenever seismic activity (earthquake) occurs, the base of the structure experiences a lateral force, whose maximum value is termed as base shear and its mathematical value is given as ... See full document

... The test CRDL mockup consists of a engineering control rod drive mechanism (CRDM), a thermal sleeve, control rod assembly, a guide tube, a fuel assembly, a cylinder full of water. The test facility is a pit (15m deep, ... See full document

... to seismic forces is studied in this ...based analysis has been carried out by considering various seismic parameters to check the effect of seismic forces on the ... See full document

... the seismic ultimate behavior was evaluated using an accurate three-dimensional nonlinear FEM ...the model, the basemat and the soil were modeled by solid elements, and shear walls of the building ... See full document

... accepted method for the analysis of real life nuclear structures neglecting kinematic ...m/sec. Analysis has been carried out applying the free field ground response spectra at founding ... See full document

... rods using an electrodischarge cutter to minimize cutting-induced surface damage; cutting was followed by electropolishing to make needle-shaped tips with a solution of 2% perchloric acid in 2- ...milled ... See full document