The calculation method of three dimensional Hexagonal PWR core fuel management and an integrated code system TPFAP-HEX/CSIM-H possessing engineering practical value have been developed in this paper.

• 六角形组件均匀化计算程序TPFAP-H是在压水堆正方形组件程序TPFAP的基础上,采用穿透概率法与响应矩阵方法相结合计算六角形组件内中子能谱分布,并考虑六角形栅元特点改造开发而成的。