The calibration and evaluation of a radioactive waste drum counting system.
The drum counting system was calibrated in this study. For (137)Cs, the counting efficiencies were around 14-1% when the density of the waste of the drum was changed from 0.15 to 2.3 g cm(-3). The effects of the background, hot spot, system linearity, sample density and weighing were also evaluated in this work. The combined standard uncertainty of the drum counting system for the (137)Cs in the density of 1g cm(-3) was around 12%. To verify the counting system, the drums containing radioactive solution were prepared by the NMI as the blind samples. A discrepancy below 15% was shown between the counting results and the reference values of the NMI.
Yuan
Ming-Chen
MC
Health Physics Division, Institute of Nuclear Energy Research, No. 1000, Wunhua Road, Jiaan Village, Longtan Township, Taoyuan County 32546, Taiwan, ROC.
Yeh
Chin-Hsien
CH
Wang
Jeng-Jong
JJ
Chen
Ing-Jane
IJ
Wang
Chu-Fang
CF
D002138:Calibration; D002588:Cesium Radioisotopes / Q000032:analysis*; D011834:Radiation Monitoring / Q000379:methods*; D011850:Radioactive Waste / Q000032:analysis*; D012015:Reference Standards
D002588:Cesium Radioisotopes; D011850:Radioactive Waste