1991年核工业核电软件中心验收入库的有23个核电程序。其中,反应堆物理方面的有9个程序,它们是三维物理热工水力耦合程序RCS轻水堆三维稳态功率分布节块分析程序SIMULATE、燃料组件多群输运理论燃耗计算程序包TPFAP、一维输运理论燃耗程序BISON3.0、求解一维波尔兹曼输运方程的改进程序MONDANT、一二三维节块离散纵标输运程序NGSN/ld(DNTM/2d、NOTRAN/3d)、节块格林函数 In 1991, the Nuclear Industry Nuclear Software Center received 23 nuclear power programs for inspection and storage. Among them, the reactor physics has nine procedures, which are three-dimensional physical thermal hydraulic coupling process RCS light water reactor three-dimensional steady-state power distribution nodule analysis program SIMULATE, fuel assembly multi-group transport theory fuel consumption calculation package TPFAP, a Dimensional transport theory BISON3.0, an improved program for solving the one-dimensional Boltzmann transport equation MONDANT, one or two three-dimensional block discrete ordinate transport program NGSN / ld (DNTM / 2d, NOTRAN / 3d) Block Green function