The Waste Water Counter ISOMED 2151 is preferably meant for activity determination of single samples from waste water decay containers of nuclear-medical institutes. Both I-131 and e.g. F-18, Sr-89, In-111, I-125, Tc-99m as well as Tl-201 can be measured as single nuclides and nuclide mixtures. The samples taken from the waste water containers are put into special measuring containers (1l-Marinelli beaker or Roediger-cartridges). The measuring value is displayed in Bq/l. In this way, the limit value prescribed by official regulations (5 Bq/l for I-131) can be reliably proved. Additionally, the time moment when the specific activity of the waste water container falls below the limit value prescribed by of?cial regulations is calculated and displayed. The measuring values can be assigned to the according waste water containers and can be stored together with the energy spectra. The printed protocol contains not only the measuring value tables, but also the last energy spectrum and the user logo.
The Waste Water Counter works on PC-basis as a Windows application with a fast multi-channel analyser and has an automatic dead time and background correction. The used menu technique guarantees a simple operation. The available energy calibration allows a simple setting of the required nuclide-specific isotope windows. The current energy spectrum is displayed in a control window and informs the user continuously about the measuring function. Network integration is possible.
A 3“ x 3“ NaI-scintillation probe is used as detector. It is placed in a 50 mm lead shielding. The measuring beaker is inserted from the top.
The Waste Water Counter ISOMED 2151 can also be used as a well counter or as a foodstuff counter.
The Waste Water Counter ISOMED 2153 is meant for γ-spectrometric inline activity measurement of I-131 from waste water of nuclear-medical institutes, which is stored in decay containers.
The NaI-scintillation probes which are used as a detector are positioned in an inner pipe in the middle of the storage tank. Up to 8 containers can be monitored simultaneously. The measuring value is digitally displayed in Bq/l. At the same time, the time moment when the specific activity of the waste water container falls below the limit value prescribed by official regulations and the waste water can be pumped into the public canalisation is calculated. A graph shows the required decay time for each container till it can be emptied, together with the according date. In the automatic mode, the activity of the single containers is automatically measured and stored one by one. Measuring times and measuring distances can be defined individually. The measuring tables assigned to the containers can be displayed as a time diagram. Protocol print as well as network integration is possible. This makes e.g. the transmission and display of the measuring values in a measuring overview possible. The stored energy spectra can be evaluated by means of spectroscopy.
The Waste Water Counter works on PC-basis as a Windows application with a fast MED multi-channel analyser. A combination of the inline Waste Water Counter ISOMED 2153 with the single probe Waste Water Counter ISOMED 2151 in a PC is possible.
