Personal dose monitoring of employees at the institute of modern physics, China.
The radiation field at the accelerator facility consists of radiation produced immediately and of secondary radiation induced by activation etc. As the accelerator building and the experimental hall are closed and inaccessible during accelerator operation, the exposure received by the employees at the IMP (Institute of Modern Physics) comes almost totally from the induced radiation. The methods and the results of personal dose monitoring from 1986 to 1999 at the IMP are presented. During the period, the total number of monitored individuals was 1960, and the average annual effective dose was 0.10 mSv. The number recording less than 0.1 mSv of effective dose was 1471 individuals. amounting to 77% of the total. Only six individuals had received effective doses between 5.0 mSv and 10 mSv. The maximum effective dose of 10 mSv was received by workers repairing the accelerator.
Wang
G
G
Institute of Modern Physics, The Chinese Academy of Science, Lanzhou.
Li
S
S
Yao
N
N
Zhu
X
X
Li
Z
Z
Zheng
H
H
D002138:Calibration; D002681:China; D006801:Humans; D016273:Occupational Exposure; D016272:Occupational Health; D010315:Particle Accelerators / Q000295:instrumentation; D011834:Radiation Monitoring; D011835:Radiation Protection; D011874:Radiometry