“华龙一号”辐射防护相关孔洞封堵要求分析方法优化  

Optimization of the Analysis Method for the Hole Pluging Requirements Related to Radiation Protection of HPR1000

作　　者：张丽莹 李卓然 李晓静 王晓霞 米爱军 ZHANG Liying;LI Zhuoran;LI Xiaojing;WANG Xiaoxia;MI Aijun(China Nuclear Power Engeering Co.,Ltd.,Beijing.100840,China)

机构地区：[1]中国核电工程有限公司,北京100840

出　　处：《核科学与工程》2021年第1期103-109,共7页Nuclear Science and Engineering

基　　金：三代核电技术升级课题(KY1606)。

摘　　要：本文针对核电厂孔洞封堵要求判断工作提出了辐射防护相关孔洞封堵要求分析方法。由于需要分析封堵要求的孔洞数量巨大,且为节省工程造价、缩短施工工期,一是通过编制分析程序提高判断效率以缩短分析周期,二是通过综合分析孔洞两侧辐射源的放射性介质及其在不同运行状态下的充满情况、辐射源的分布及射线类型、辐射源与孔洞的相对位置关系、孔洞开孔方向、孔洞周围区域人员的到达情况等因素,对贯穿热位移物项的孔洞是否进行生物屏蔽封堵进行判断。基于以上做法,一方面提高了辐射防护相关孔洞封堵需求的判断效率,另一方面也减少了一定封堵数量从而降低工程造价。封堵需求判断方法已形成集团标准并正式发布,可在其他工程项目上持续推广应用。For the hole plugging in nuclear power plants,a method for judging the plugging requirements from the perspective of radiation protection is proposed.Due to the huge number of holes to be plugged,and in order to save the construction cost and shorten the construction period,firstly a small program was developed to improve the efficiency of initial judgment and shorten the analysis cycle.The other way is to comprehensively analyze the radioactive medium of the radiation source on both sides of the hole and its filling status under different operating conditions,the distribution and radiation type of the radiation source,the relative position between the radiation source and the hole,and the hole opening direction,the access of people in the area around the hole,etc.,the biological shielding plugging needs of the hole penetrating heat displacement items is determined and optimized.Based on the above practices,on the one hand,the efficiency of judging the plugging requirements in radiation protection aspect is improved,and on the other hand,a certain amount of plugging is reduced,thereby reducing the construction cost.The method of judging plugging requirements has formed a standard and officially released,which can be continuously promoted and applied on other engineering projects.

关 键 词：孔洞封堵 生物屏蔽 热位移 

分 类 号：TL48[核科学技术—核技术及应用]