快中子脉冲堆用快速响应保护仪  

Fast Response Safety Instrument of Fast Neutron Burst Reactor

作　　者：韩惠林[1,2] 李勐 郑春[1,2] 张翼[1,2] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900 [2]国家核技术工业应用工程技术研究中心,四川绵阳621900

出　　处：《核动力工程》2007年第z2期53-55,共3页Nuclear Power Engineering

摘　　要：为了保证快中子脉冲堆在爆发脉冲后迅速停堆,研制了快速响应保护仪。该仪器采用ST401快速响应塑料闪烁体配以GDB-44F型光电倍增管作为探测器,通过电流放大后输入触发器单元,在功率超过保护设定值后12μs内输出触发信号,触发主安全块在100ms内下降5mm,使堆处于深次临界状态。在CFBR-II堆的200余次脉冲运行中,快速响应保护仪触发主安全块下降5mm的时间小于90ms,保障了堆的安全。To ensure the fast neutron burst reactor being sub-critical state immediately after fission burst, a fast response safety instrument is developed. The instrument consists of scintillation detector, photomulti- plier, pre-amplifier, amplifier and trigger. The trigger signal can be produced in 12μs after the preset thresh- old value is exceed, and then trigger the safety block to drop 5mm in 100ms. The instrument was applied at CFBR-II reactor, and has given out scram signal in time more than 200 times burst operation. The fast re- sponse safety instrument triggers safety block to drop 5mm less than 90ms to ensure the safety of reactor.

关 键 词：快中子脉冲堆 快速响应 保护仪 

分 类 号：TL364.2[核科学技术—核技术及应用]