本文针对海上浮动核电站堆底屏蔽施工困难、屏蔽效果难以保证的问题，研发了一款新型堆底屏蔽材料。该材料由复合屏蔽颗粒和复合屏蔽腻子组成，以海上浮动核电站堆底源项为输入，进行了优化配比设计。新型堆底屏蔽材料进行了样品试制和性能试验考核，考核结果表明材料具有优良的屏蔽性能和理化性能。将新型堆底屏蔽材料用于海上浮动核电站堆底屏蔽设计，当屏蔽厚度为2 m时，堆底总剂量率降低约9个量级，剂量率低于35 μSv/h，满足海上浮动核电站的设计要求。
A new type of bottom shielding material was been developed to solve construction difficulties of bottom shielding and shielding effectiveness hard to guuarantee of floating nuclear power plant. The bottom shielding materials was composed of composite shielding particles and composite shielding putty.As bottom source of floating nuclear power plant, the contents of materials was optimized. The samples of bottom shielding materials were tested and verified which was excellent shielding performance and physical and chemical properties. The bottom shielding was applied to bottom shielding materials design. When the shield thickness was 2 metres, The reduction of total bottom dose rate was 9 orders and the total bottom dose rate was less than 35 μSv/h. The bottom shielding was suitable for design requirement of floating nuclear power plant.
2019,41(10): 94-97 收稿日期：2018-11-29
DOI：10.3404/j.issn.1672-7649.2019.10.018
分类号：TM623.8
作者简介：陈艳(1986-),女,工程师,从事辐射屏蔽设计
参考文献：
[1] 尹春雨, 刑硕, 庞华, 等. 浮动核电站燃料棒设计研究[J]. 科技创新导报, 2015, 24:130-132
[2] 何景异, 陈小邹, 孙鹏才, 等. 核动力舰船生物屏蔽技术[J]. 舰船科学技术, 2016, 38(3):120-123
[3] 李晓玲, 余方伟, 孙霖, 等. 铅硼聚乙烯复合屏蔽材料成分配比优化设计[J]. 舰船科学技术, 2015, 37(12):148-154
[4] 王银年. 遗传算法的研究与应用——基于3PM交叉算子的退火遗传算法及应用研究[D]. 无锡:江南大学, 2009:1.
