球床高温气冷堆使用可燃毒物的方案探讨  

Research on Application of Burnable Poison in Pebble Bed HTR

作　　者：魏春琳[1] 张剑[1] 单文志[1] 经荥清[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《原子能科学技术》2013年第B06期156-159,共4页Atomic Energy Science and Technology

基　　金：国家重大科技专项经费资助项目(ZX069)

摘　　要：为改善球床高温气冷堆在特定情况下功率分布的形状和峰值,可在燃料球内添加可燃毒物。本文分析两种可燃毒物的添加方式,燃料球石墨基体均匀添加可燃毒物和燃料球内添加可燃毒物颗粒。由于10B的强吸收性能,均匀添加可燃毒物的消耗速度过快,不易控制,而通过添加不同尺寸的可燃毒物颗粒可优化燃耗速度,有效改善堆芯功率分布的形状和峰值。Burnable poison in fuel ball was used in pebble bed high-temperature gas-cooled reactor（HTR） to optimize the shape and the peak factor of power distribution in certain conditions.Two options are available and evaluated,that is the homogeneous burnable poison in graphite matrix and burnable poison particles（BPPs） in fuel balls.Due to the absorption cross section of 10B,the depletion speed for homogeneous burnable poison is very fast,and difficult to control,on the other side,the depletion speed of BPPs can be optimized respecting to its size,and better shape and peak value of power distribution can be achieved.

关 键 词：球床高温气冷堆 燃料球 可燃毒物颗粒 

分 类 号：O571.5[理学—粒子物理与原子核物理] TL32[理学—物理]