摘要
介绍深圳大学核技术所几年来对微型反应堆( 简称微堆) 进行的一系列改进,包括: 采取特殊措施, 延长微堆安全运行时间, 从原6 ~8h , 延长至40h 左右; 成功研制了治疗肝癌的含稀土元素的放射性玻璃微球; 建立了超热辐照管和计算机控制的循环跑兔装置, 扩展了微堆活化分析范围和领域; 研究成功一种新颖、简单、准确, 又无需添置任何设备的测量堆芯绝对中子通量密度的方法———氙中毒法. 尽管深大微堆具有固有的安全性, 但它目前处于运行后期. 由于腐蚀、疲劳等原因, 核燃料元件包壳破损的可能性将越来越大,为此研制了安全监测计算机系统, 一旦发生核燃料元件包壳破损时, 系统能很快监测放射性泄漏, 这对控制核污染起到十分重要的作用. 但应指出, 这并不是说深大微堆已安全无事.由最近国外发生的一系列核泄漏事故说明, 核安全管理、人员因素至关重要. 不管放射性物质泄漏多少, 影响都很大, 万万不能麻痹大意.
Progresses of the Miniature Neutron Source Reactor (MNSR) in Joint Institute of Applied Nuclear Technology in Shenzhen University are introduced in this paper.Following main issues are conclu ded : ① The continuous safty operating time is increased from 6~8 hours to 40 hours by special measures. This important progress opens the future of producing radioactive isotopes of micro-sphere containing rare-earth element 166 Ho which can cure liver cancer and has been obtained in MNSR; ② The superheat rabbit device and cycle rabbit device controlled by computer has been established. That extends the scope of activation analysis; ③ A new, simple and accurate method, Xenon poisoning method, measuring absolute neutron flux has been developed; ④ A system to check the radioactive release from the reactor by computerized devices has been set up.
出处
《深圳大学学报(理工版)》
EI
CAS
1999年第4期45-52,共8页
Journal of Shenzhen University(Science and Engineering)
关键词
微型反应堆
可运行时间
安全监测
深圳大学
miniature neutron source reactor (MNSR)
operating time
radiotherapy of REAS glass micro-sphere
safety monitoring system
xenon poisoning method