Development of Online Directional Dose Equivalent Rate Monitoring System
In order to accurately measure the workplace(H)'(0.07)in real time,the ZF-FD7 online(H)'(0.07)monitoring system was developed.Its detector is based on plastic scintillator and SiPM,and the developed intermediate machine and upper computer have data transmission,dose rate display,over-threshold alarm and other functions.For the developed on-line(H)'(0.07)monitoring system,the radiation characteristics measured by reference to GB/T4835.1-2012 are as follows:in the range of 76 μSv/h-1.4 Sv/h,its relative inherent error is within±10％;The average energy of the β ray is 60-800 keV,and the response is within the range of 0.8-1.2;At-45°-45° incidence,the response of the incidence angle is between 0.88-1.00;The repeatability of the measurement results in a 1 mSv/h radiation field is 2.0％.After temperature compensation,the response change is 0.91-1.08 within-10 ℃-40 ℃,and 0.93-1.00 in the range of relative humidity of 45％-85％.The test results show that the characteristics of the ZF-FD7 on-line(H)'(0.07)monitoring system meet the requirements of GB/T4835.1-2012,and can be used for real-time monitoring of directional dose equivalent rate in high weak penetrating radiation sites.
国家科技期刊平台
NSTL
万方数据
