摘要
一次屏蔽计算对于评估工作人员的辐射剂量、确保反应堆压力容器(RPV)及堆内构件在整个反应堆寿期内的安全性以及防止混凝土屏蔽体及其外部部件和结构被过度活化具有重要的意义。对于一次屏蔽源项的处理,JMCT-S程序自带的源粒子抽样功能无法完全满足其计算需求。本文开发了JMCT-S程序的源项生成程序和源抽样子程序,并在秦山一期和CAP1400一次屏蔽计算模型上进行了验证和应用。数值结果表明,推导的理论模型和开发的程序是正确的,从而为后续提高一次屏蔽设计精度提供了基础。
Primary shielding calculation plays an important role in evaluating the radiation dose of personnel, insuring the safety of reactor pressure vessel （ RPV） and reactor internals during the whole lifetime,and preventing the concrete shielding as well as the outer components and structures from an excess of activation. The source particle sample function of the JMCT-S code cannot fully satisfy the calculation requirements for generating the source term of primary shielding calculation. In this paper,a source term generation code and a source sample code for JMCT-S are developed. Validation and application on primary shielding calculation model on Qinshan No. 1 nuclear power plant and CAP1400 reactor are performed. Numerical results show that the theoretical model and the codes are both correct, and can be used to improve the accuracy of primary shielding calculation.
出处
《核科学与工程》
CSCD
北大核心
2017年第5期805-809,共5页
Nuclear Science and Engineering
