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选取加速器驱动次临界快堆 (ADSFR)进行燃烧武器级钚研究。在堆芯内装载武器级钚 ,包层内装载 Th,选取液态钠为冷却剂。利用 L AHET程序模拟质子与靶核的相互作用 ;MCNP模拟次临界包层内 2 0 Me V以下的中子与材料核的相互作用 ;ORIGEN2利用 MCNP的输出提供的一群等效截面对堆芯进行燃耗计算。计算分析的结果表明 :满功率运行 30 0 d内 ,可以消耗掉 139.6 kg的 Pu,同时产生110 kg的 2 33U。可以得出结论 :考虑临界安全、功率密度和燃耗等因素 ,利用所选方案燃烧武器级钚是可行的
Accelerator-driven sub-critical fast reactor (ADSFR) was selected to study the combustion of weapons-grade plutonium. Weapon-grade plutonium is loaded in the core, Th is contained in the cladding, and liquid sodium is selected as the coolant. The interaction between proton and target nucleus is modeled by L AHET program. MCNP simulates the interaction of neutrons below 20 MeV in the subcritical cladding with the material nucleus. ORIGEN2 uses a group of equivalent sections provided by the output of MCNP to conduct the core Fuel consumption calculation. The results of calculation and analysis show that 139.6 kg of Pu can be consumed and 110 kg of 33 U can be consumed within 30 days of full power operation. It can be concluded that it is feasible to use the selected scheme to burn weapons-grade plutonium, taking into account factors such as criticality, power density and fuel burnup