RELIABILITY ASSESSMENT OF NPP EQUIPMENT IN THE LINE-SPECTRAL THEORY OF SEISMIC
There are various methods for determining seismic loads on equipment plant. This article describes the evaluation of the reliability of the equipment useful (and its supporting structures) under static and seismic loads using layerwise spectra calculations in the framework of the quasi-static approach. On physical and mathematical calculation methods based on existing seismic resistance test equipment are divided into three fundamentally different types: static, linear and dynamic spectral Here we take a closer look linear spectral. This method is based on the method of reduction, which allows to reduce the system with N degrees of freedom equivalent to the N systems with one degree of freedom with the superposition of oscillations of simple systems. The inertial seismic loads are determined using spectra responses to elevations of installation, the response of systems with one degree of freedom for the seismic effects for a given value of the damping constant fluctuations.