Preliminary Design of 1000MW Nuclear Reactor

In order to verify the practicality of a software named NECP, which is used for physical design of the nuclear power reactor, a preliminary design of 1000MWe, PWR were carried out by using this software. After the conceptual design, fuel assembly design and the full core dispersion design, the main parameters were determined and the 8 kinds of fuel assemblies were arranged. The homogenization calculation of various types of fuel assemblies and the arrangement of core fuel assemblies were completed while the full core dispersion calculation was performed. The power results, reactivity curves and non-uniform coefficients were determined after simulated and compared with the preset expected values. According to the reactor design criteria, the results are analyzed and improved. By modifying parameters such as the fuel enrichment of different components, the reactor design that meets the requirements is finally obtained. The results show that the calculated values are in good agreement with the expected values and meet the reactor design criteria, and the NECP software can be applied to operate the reactor physical parameters in the nuclear power plant. (paper)