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The RADTRAD code can be used to estimate the containment release using either the TID-14844or NUREG -1465 source terms, and assumptions, or a user specified table. In addition, the code can account for a reduction in the quantity of radioactive material due to containment sprays, natural deposition, filters, other natural and engineered safety features. The RADTRAD code uses a combination of tables and/or numerical models of source term reduction phenomena to determine the time dependent dose at user specified locations for a given accident scenario. The code system also provides the inventory, decay chain, and dose conversion factor tables needed for the dose calculation. The RADTRAD code can be used for occupational radiation exposure assessments, typically in the control room, for site boundary dose estimates, and for dose attenuation estimates due to facility or accident sequence modification.

Change Log

Version 4.11.6 - Released 10/26/2017:

  • Sources can no longer connect to multiple Compartments. RADTRAD produces erroneous results if a source is shared amongst compartments.
  • An issue was resolved which caused the RADTRAD diagnostic flag file (radtrad.flag) from being properly generated. The error resulted in an empty radtrad.flag file being produced. This fix ensures all appropriate flags are written to the file.
  • An error message is now included in the model error report when a filtered Pathway does not have an associated Filter.
  • An out of range error message is no longer displayed when the Natural Deposition Power Model Percentile is set to 90%.
  • The Power’s Model Accident type no longer defaults to “Invalid Value(0)” when enabled.
  • An issue was resolved which caused the Nuclide Validation test to fail if a source did not have an active scenario set. The nuclide validation test verifies that nuclide references are valid and that dose and inventory nuclides intersect.