Exposure data


IDEAplus may provide rough estimates of the potential dose due to unnoticed intakes when working with open radioactive materials. For entering the exposure data please via "Data" to "Material data" (see first shot to the left).


Next shot: The "Material data" window opens where you can enter the exposure data for the respective person (please make sure that the correct name is indicated in the window heading.


Next shot: After pushing the "New" button you may enter the radionuclide the person is working with (in the case of Dr. Taylor Am-241). After input of the radionuclide the respective default absorption type and particle size are displayed in the green fields. You may accept these defaults or you may enter other parameters if known.


Next shot: After pushing the "New" button in the "Material data" window you may enter the special data of the handled material.


Next shot: In the "Handled activity" window you should enter the annual average of the activity handled per working day. In the "Release potential" window you should enter

  • "low" for solid and liquid materials at low temperatures
  • "medium" for liquid materials at medium temperatures
  • "high" for liquid materials at high temperatures, vapors and gases

Next sot: In the "Protection level" window you should select the most appropriate handling mode (Dr. Taylor is supposed to work at a ventiation box). In the "Duration of handling" window you should enter the average number of working days at the ventilation box per year. After completing the entries in the "Material data" window, The software calculates an estimate for the potential annual dose due to unnoticed intakes for this kind of handling. In the case of Dr. Taylor the potential dose is in the order of 1.9 mSv. This value is taken over as a reference inot the upper "Nuclide" window.


Next shots: If no special handling data are available, there is the possibility to calculate the potential dose on the basis of room air activity concentration data as shown in the next shots, which are more or less self explaining. But you should note that this procedure covers only the inhalation component of the intake at the site of the aerosol samplers.
















Prof. Dr.-Ing. Hans Richard Doerfel

IDEA System GmbH, Am Burgweg 4, D-76227 Karlsruhe, Germany.

E-Mail: info@idea-system.com