实验快堆堆顶固定屏蔽的研制  

Development of Fixed Top Shielding for Experimental Fast Reactor

作　　者：叶龙[1] 何恩光 何政律 Ye Long;He Enguang;He Zhenglu

机构地区：[1]北方重工集团有限公司,沈阳110141 [2]沈阳建筑大学机械工程学院,沈阳110168

出　　处：《上海电气技术》2024年第3期66-69,共4页Journal of Shanghai Electric Technology

摘　　要：对实验快堆的堆顶固定屏蔽进行研制,具体包括结构设计、包装设计、焊接工艺、现场安装。采用累计厚度650mm的蛇纹石混凝土,对中子辐射和高温热辐射进行屏蔽。设置厚度145mm的绝热矿渣棉隔热层,强化隔热效果。针对堆顶固定屏蔽分体式结构特点,采用反变形法、辅助横梁等措施,在重力载荷、安装载荷、焊接变形等因素影响下,现场组装后最大中心挠度约为8mm,满足我国实验快堆的屏蔽需求。The development of fixed top shielding for experimental fast reactor was carried out,including structural design,packaging design,welding process,and on-site installation.Serpentine concrete with a cumulative thickness of 650 mm was utilized for shielding against neutron and high-temperature thermal radiation.A mineral slag wool insulating layer with thickness of 145 mm was incorporated to enhance thermal insulation.Addressing the modular structure of fixed top shielding,measures such as anti-deformation method and auxiliary cross beam were employed to mitigate effects from factors such as gravity load,installation load,and welding deformation.After on-site assembly,the maximum central deflection is approximately 8 mm,meeting the shielding requirement of experimental fast reactor in China.

关 键 词：实验快堆 固定屏蔽 设计 安装 

分 类 号：TL371[核科学技术—核技术及应用]