Analysis Method Research for the Influence of Core Power Distribution on RPV Radiation
Abstract: Core power distribution determines the distribution of core fission neutron and γ ray source. In the case of a certain reactor arrangement, core power distribution is the main factor that affects the radiation safety of reactor pressure vessel (RPV) (as the fast neutron (E > 1.0 MeV) flux in RPV). By combining the forward transport method with the adjoint transport method of a 2D discrete coordinate method program DORT, this paper presents a set of analysis method which can quickly judge the effect of the core power distribution change on RPV maximum fast neutron flux based on the CAP1400 reactor model. This method avoids the necessity to perform repeated transport cal-culation in the past analysis model. The sensitivity analysis for the influence of core power distri-bution on RPV radiation can be finished with one forward transport calculation and one adjoint transport calculation, as well as straightforward data process. This method can greatly improve the efficiency of calculation and analysis.
文章引用: 夏春梅 , 丁谦学 , 梅其良 (2016) 堆芯功率分布对RPV辐照影响的分析方法研究。 核科学与技术， 4， 63-68. doi: 10.12677/NST.2016.43008
 DORT, a Two-Dimensional Discrete Ordinates Transport Code. ORNL/TM-11778.
 U.S. (2001) Nuclear Regulatory Commission. Regulatory Guide 1.190 Calculation and Dosimetry Methods for Determining Pressure Vessel Neutron Fluence. Office of Nuclear Regulatory Research.
 丁谦学, 夏春梅, 梅其良. CAP1000核电厂堆外探测器响应函数计算方法研究[J], 核科学与工程, 2016: 36(2): 257-262.