CPR1000型压水堆<sup>14</sup>C产生量研究

CPR1000型压水堆¹⁴C产生量研究

摘要: 本文阐述了压水堆中¹⁴C的主要产生机理，利用蒙特卡罗程序MCNP5建立了精确的三维堆芯模型，计算了堆芯各辐照区的47群中子注量率，计算得到一回路冷却剂、燃料芯块和包壳及堆芯上下反射层的¹⁴C产生率和年产生量。结果表明，计算模型、参数及计算假设具有一定的代表性，计算结果适用于CPR1000型压水堆核电机组。

Abstract: Product mechanism of ¹⁴C in PWR was introduced in this paper. 47 groups neutron fluence rate was obtained by accurate 3D MCNP model. ¹⁴Cproduction rates and annual production in the regions of primary coolant, fuel pellets, fuel cladding, and core reflector were calculated. The model and calculations are typical and can be applicable to CPR1000 PWR.