title: The calibration and evaluation of a radioactive waste drum counting system.
abstract: 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.
authors.affiliation: Health Physics Division, Institute of Nuclear Energy Research, No. 1000, Wunhua Road, Jiaan Village, Longtan Township, Taoyuan County 32546, Taiwan, ROC.
authors.forename: Ming-Chen
authors.initials: MC
authors.lastname: Yuan
authors.forename: Chin-Hsien
authors.initials: CH
authors.lastname: Yeh
authors.forename: Jeng-Jong
authors.initials: JJ
authors.lastname: Wang
authors.forename: Ing-Jane
authors.initials: IJ
authors.lastname: Chen
authors.forename: Chu-Fang
authors.initials: CF
authors.lastname: Wang
mesh_terms: D002138:Calibration; D002588:Cesium Radioisotopes / Q000032:analysis*; D011834:Radiation Monitoring / Q000379:methods*; D011850:Radioactive Waste / Q000032:analysis*; D012015:Reference Standards
chemical_list: D002588:Cesium Radioisotopes; D011850:Radioactive Waste