摘要
为保障乏燃料贮存舱内作业人员免受内照射伤害,需控制乏燃料贮存舱内的气载放射性浓度,气载放射性的排出主要通过通风系统实现。本文针对乏燃料贮存舱的特点设计了4种通风方式,利用Airpak软件对乏燃料贮存舱4种通风方式进行了模拟仿真,通过对比分析污染蒸汽浓度场、流场以及污染蒸汽轨迹图,研究4种通风方式对气载放射性排出的影响:结果表明,分层送风方式Ⅱ对气载放射性排出效果较好,并且在此通风方式下,人员作业平台上的气载放射性浓度较其他3种通风方式低。
In order to protect the workers in the spent fuel storage compartment from internal radiation,the airborne radioactive concentration in the spent fuel storage compartment needs to be controlled.Exhaustion of the airborne radiation is mainly realized through the ventilation system.According to the characteristics of the spent fuel storage tank,four ventilation methods are designed in this paper.Airpak software is used to simulate the four ventilation methods of the spent fuel storage tank.By comparing and analyzing the polluted steam concentration field,flow field and polluted steam trajectory,the effects of four ventilation methods on the airborne radioactive exclusion are studied.The results show that the layered air supply methodⅡhas a better effect on the airborne radioactive emissions,and under this ventilation mode,the airborne radioactive concentration on the personnel working platform is lower than that in other three ventilation modes.
作者
桂霆
鲜春媚
方震
董长青
安静
贺梅葵
Gui Ting;Xian Chunmei;Fang Zhen;Dong Changqing;An Jing;He Meikui(Wuhan Second Ship Design and Research Institute,Wuhan,430064,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2020年第5期116-121,共6页
Nuclear Power Engineering
关键词
风口布置
数值模拟
气载放射性浓度
通风效率
Vent layout
Numerical simulation
Airborne radioactive concentration
Ventilation efficiency
