某乏燃料运输专用船舶的屏蔽设计  

Shielding Design of an Exclusive Ship for Spent Nuclear Fuel Transportation

作　　者：沈海波[1] 李恺 SHEN Hai-bo;LI Kai(Nuclear Power Institute of China,Chengdu Sichuan 610213,China;CNNC Everclean Environmental Technology Engineering Co.,Ltd.,Beijing 100045,China)

机构地区：[1]中国核动力研究设计院,四川成都610213 [2]中核清原环境技术工程有限责任公司,北京100045

出　　处：《机电产品开发与创新》2025年第2期82-84,共3页Development & Innovation of Machinery & Electrical Products

摘　　要：中核清原环境技术工程有限责任公司拟建造我国第一艘满足国家海事局《乏燃料运输船舶法定检验规则》、在我国内海运输乏燃料的专用船舶。本文采用蒙特卡罗程序MCNP5建模,模拟计算了船体各舱室、船体表面及周围的剂量当量率,模拟计算结果表明:船舶起居舱的最大剂量当量率为2.2uSv/h,船舶表面的最大剂量当量率为33.5uSv/h,距船舶表面2m处的最大剂量当量率为24.3uSv/h。因此,除A甲板靠近货舱侧区域外,其他区域的辐射剂量满足屏蔽设计目标要求;还应加强A甲板靠近货舱侧的屏蔽能力。CNNC Everclean Environmental Technology Engineering Co.,Ltd.planed to build China's first exclusive ship to transport spent fuel in China's inland sea,which meets the"Statutory inspection rules for spent fuel transport vessels"issued by the Maritime Safety Administration of China.In this paper,Monte Carlo code MCNP5 is used for the evaluation of dose equivalent rates of each cabin,ship's Surface and its surroundings.The results showed that the maximum dose equivalent rate of the ship’s accommodation?area is 2.2uSv/h,the maximum dose equivalent rate of the ship surface is 33.5uSv/h,and the maximum dose equivalent rate at 2 meters from the ship surface is 24.3uSv/h.Therefore,the radiation dose of other areas meet the shielding design target except the area near the cargo holds side of deck A.The shielding capability of the area near the cargo holds side of deck A should also be strengthened.

关 键 词：乏燃料运输船舶 剂量当量率 蒙特卡罗程序MCNP5 

分 类 号：TM623[电气工程—电力系统及自动化]