利用美国B＆W公司模拟乏燃料高密度贮存、美国太平洋西北实验室模拟燃料组件运输容器及上海原子核研究所的临界实验数据，对AMPX－KENO蒙特卡罗程序进行了验证计算。绝大多数方案的k(eff)计算值的误差小于2％，极少数方案小于3％。用该程序计算了重水零功率反应堆（HWZPR）的临界水位。用临界水位计算值算出的k(eff)值与该堆首次临界时的实测k(eff)值的误差小于1％。验证计算和实际应用的结果均表明：AMPX－KENO程序适用于以低浓铀或天然金属铀为燃料、轻水或重水为慢化剂的棒栅系统的临界计算。 The AMPX-KENO Monte-Carlo program was validated using the critical experimental data of the United States B & W simulated high density storage of spent fuel, the Pacific Northwest Laboratory simulation fuel assembly transport container and the Shanghai Institute of Nuclear Research. The error of the calculated value of k (eff) is less than 2% for most of the schemes and less than 3% for the very few schemes. The program calculates the critical water level of a heavy water zero power reactor (HWZPR). The error between k (eff) calculated from the critical water level calculation and the measured k (eff) value at the first critical stage of the stack is less than 1%. Verification calculations and practical application results show that the AMPX-KENO program is suitable for the critical calculation of a bar grid system using LEU or natural uranium as a fuel, light or heavy water as a moderator.