基于二维S_N方法的岭澳核电站首启堆源量程探测器响应计算分析

Source range detector response calculation at first start the reactor and start neutron source design for Ling Ao nuclear power plant based on two-dimensional discrete ordinate method

采用基于离散纵标方法 (SN)的二维输运程序DORT,对岭澳二期核电站首次启堆情况下的源量程探测器计数进行计算,并对计算过程中会影响结果精度的各种参数进行比较分析;同时将计算结果与岭澳二期核电站实测值进行比较,结果表明:优化模型计算值与测量值之比为1.028±0.050。为后续核电站设计中计算首启堆情况下源量程探测器计数提供借鉴。

In this work, the reactor source range detector response count of Ling Ao （ Phase If） nuclear power plant at first start were calculated using a two-dimensional transport code name DORT which based on discrete ordinate method （also known as SN method）. Analyses are done to confirm the influence of various parameters. The calculated results are compared with the measurement from Ling Ao Nuclear Power Station. The results show that the ratio of the optimal model and the measured value is 1. 028 ＋ 0. 050. This work can give some recommendation to the filed of source range detector count calculation at first start the reactor.