Praktische Erfahrungen bei der Durchfuehrung von Freigabe-Messungen mit der Freimessanlage H 13630 [report]

A. Reichert
This report is a description of the practice of clearance measurements on two batches of residues composed of different materials of different origins, based on the principle of total gamma measurement. Besides, experience accumulated in performance of clearance measurements is outlined. Especially regarding the determination of the nuclide vector and the key nuclide as weil as calibration and evaluation of the measured results, it has appeared that the necessary preliminary examinations take
more » ... examinations take much time. lt has been found that expenditure in terms of time is much higher with an inhomogeneously contaminated material to be measured than with a homogeneously contaminated one. Taking into account the time required for the preliminary investigations compared with that for the decision measurement, it can be said that clearance measurements with the clearance measurement system described are justified from the economic point of view only for bulk goods preferably contaminated or activated homogeneously such as rubbish, insulating material, sheet metal, pipework, etc.
doi:10.5445/ir/270034299 fatcat:54hz567zovggxczi2t5sfuqjxi