CALCULATION ANALYSIS OF THE STRESS-STRAIN STATE OF THE COLLECTOR-TO-NOZZLE WELD IN THE STEAM GENERATOR UNDER SEISMIC LOADING

摘要

The authors present the calculation results for the stress-strain state of the weldment of the "hot" collector to the nozzle in the PGV-1000 steam generator in the area of welded joint No. 111 in the simulation of the seismic loading specified using the response spectra for the vertical and horizontal vibrations. The calculation of seismic stresses is performed based on the linear-spectral analysis using the three-dimensional model of the WWER-1000/338 reactor plant.