压水堆燃耗数据库的制作与验证  

Development and Validation of Burnup Library for PWR

作　　者：吴小飞[1] 吴海成[1] 刘萍[1] 葛智刚[1] 温丽丽[1] 肖越 WU Xiaofei;WU Haicheng;LIU Ping;GE Zhigang;WEN Lili;XIAO Yue(China Nuclear Data Center,Key Laboratory of Nuclear Data,China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院核数据重点实验室,中国核数据中心,北京102413

出　　处：《原子能科学技术》2022年第5期944-951,共8页Atomic Energy Science and Technology

摘　　要：基于评价数据库ENDF/B-Ⅷ.0和EAF-2010研制了一套适用于CINDER90程序的压水堆用燃耗数据库,该数据库包含中子反应截面、衰变数据和裂变产额数据3部分。中子反应截面的加工分为两步,首先采用Inverted-Stack算法和CRECTJ6程序将EAF-2010库的截面分支比融入ENDF/B-Ⅷ.0库全套中子评价数据,然后用NJOY2016程序处理成63群截面。衰变数据和裂变产额数据分别由MF8/MT457和MF8/MT454数据加工得到,裂变产额数据共包含36个裂变核的60组产额数据。以SFCOMPO-2.0中Takahama-3压水堆燃料组件为基准题,对研制的燃耗数据库进行了验证。结果表明,本文制作的燃耗数据库的方法是正确的,对于某些核素,如^(242)Am^(m),制作的数据库比自带库的计算结果更接近实验值。Burnup calculation is an important field in the nuclear physics calculations by which the changes in the isotopic composition of materials is computed.Burnup calculation is of significant importance for a wide range of applications in various stages of design,licensing,operation,waste management and decommissioning.The role of the nuclear data library is very important to the accuracy of burnup calculations.CINDER90 is a widely used point nuclear depletion code and its library was released in the year 2000.The raw data which are used for processing CINDER90 library are primarily from ENDF/B-Ⅴ、ENDF/B-Ⅵand EAF-3.It is necessary to update this library with newly released evaluated nuclear data.In this paper,a CINDER90 burnup library for PWR was developed based on nuclear data library ENDF/B-Ⅷ.0 and EAF-2010,which consists of three parts:neutron cross section,decay data and fission product yields.The processing of neutron cross section was divided into two parts,firstly the branching ratios of EAF-2010 were integrated into ENDF/B-Ⅷ.0 library using the inverted-stack algorithm and CRECTJ6 program,and then the pointwise cross section was processed into 63-group infinitely diluted cross sections by the open-source nuclear data processing code NJOY2016.The cross-section data were Doppler broadened at 293.6 K and the mid-life PWR flux spectrum with a fusion peak added(IWT=5)was applied as weighting function.Decay data and fission-product yields data were processed based on the MF8/MT457 and MF8/MT454 separately.Continuum delayed photon emission data was converted into a series of discrete lines by defining a set of energy bins with a width of 10 keV that spans the range of the continuum.Fission-product yields data contain 60 datasets from 36 fissionable actinides.When yield data are not available for an isotope identified in the library as fissionable,^(239)Pu fast yield set is given for neutron induced fission and ^(252)Cf spontaneous fission yield set is given for spontaneous fission.The Takahama-3 benchmark f

关 键 词：CINDER90 燃耗数据库 Takahama-3 

分 类 号：O571.5[理学—粒子物理与原子核物理]