Influence of void fraction in the power distribution for a GE-12 fuel assembly

8th International Congress of Engineering Physics

物理学;工业技术

Castillo, S.J.^1 ; Vargas, G.A.^2 ; Gallegos, E Del Valle^1,3

Instituto Politécnico Nacional Avenida Instituto Politécnico Nacional S/N, Gustavo A. Madero, San Pedro Zacatenco, Ciudad de México, D.F.

07738, Mexico^1

Instituto Nacional de Investigaciones Nucleares Carretera Mexico-Toluca S/N, La Marquesa, Ocoyoacac

52750, Mexico^2

Instituto Nacional de Investigaciones Nucleares, Mexico^3

关键词: Fission process;    Fuel assembly;    Heat production;    Power distributions;    Thermal fluxes;    Uranium enrichment;    Void fraction distribution;    Weight percent;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/792/1/012051/pdf
DOI  :  10.1088/1742-6596/792/1/012051

学科分类：工业工程学

来源: IOP

【 摘 要 】

Analysis of the influence of void fraction distribution is very important to learn about the fission process and heat produced by the fuel assembly, here in this study several void fraction (VF) values along different burnup values have been considered in order to observe their influence in power distribution, uranium consumption, neutron flux andbehaviour for a GE-12 fuel assembly. For this study, burnups up to 60 MWd/kg and VF values up to 0.8 were considered setting the uranium enrichment at 3.5 weight percent at the start of every VF scenario, results show that higher void fractions reduce the thermal flux decreasing thermal fission and limiting heat production.