Seismic analysis of a type of refueling machine in Nuclear Power Plant

The nuclear refueling machine is responsible for transporting nuclear fuel and belongs to Class II seismic equipment in nuclear power plants, and it is very important to conduct seismic analysis for it. In this paper, beam elements are used to establish a finite element model, and the seismic response spectrum method is adopted for seismic analysis. This approach can not only reflect the force on the main structure but also have high computational efficiency. Additionally, to calculate the strength of the structure more comprehensively, the bolted connection of the local structure is analyzed according to the national code, which makes up for the simplification of beam elements in terms of details. The seismic analysis of the nuclear refueling machine can provide a reference for the seismic analysis of similar products in terms of modeling methods and analysis processes.