田湾核电厂长周期混合堆芯稳态热工水力分析  

Thermal-hydraulic Analysis of Mixed Core on Long Cycle of Tianwan NPP

作　　者：杨晓强[1] 姚进国[1] 郑继业[2] 李载鹏[1] 李文双[1] 

机构地区：[1]中国核电江苏核电有限公司,连云港222042 [2]环境保护部核与辐射安全中心,北京100082

出　　处：《核安全》2013年第4期64-68,共5页Nuclear Safety

基　　金：国家国际科技合作专项资助项目(2011DFR60730)

摘　　要：田湾核电厂1、2号机组计划自2014年开始向长周期燃料循环过渡,在AFA型燃料组件组成的堆芯中逐步装入TVS-2M新型燃料组件,经过3个燃料循环的过渡,堆芯将全部装载TVS-2M型燃料组件,以实现长周期燃料循环。燃料组件结构的改变使原堆芯热工水力分析不再适用。本文以长周期燃料循环过渡时期的5种典型堆芯组成情况为例,介绍了VVER机组稳态热工水力分析的程序和方法,对混合堆芯的稳态热工水力特性进行了重新分析。结果表明,混合堆芯稳态设计仍满足热工水力设计准则。Tianwan NPP Units 1 and 2 plans to transit to long fuel cycle from the year of 2014.The new type fuel assembly ＂TVS-2M＂will be introduced into the reactor core composed by AFA assemblies.After three fuel cycles,the reactor core will be loaded by all TVS-2M fuel assemblies and realize long fuel cycle. The thermal-hydraulic analysis should be performed again duing to the change of fuel assembly structure.This paper presents the thermal-hydraulic analysis procedure and method for the steady-state of VVER reactors, and re-analyzes the thermal-hydraulic characteristic of the mixed core,which include five types＇ core loading during transition.It turned out that the mixed core steady-state design is still fitted to the requirements for thermal-hydraulic design.

关 键 词：TVS-2M 混合堆芯 长周期燃料循环 稳态 热工水力特性 

分 类 号：TL33[核科学技术—核技术及应用]