SNAP/RADTRAD Release Notes

 

  • Users can now set their own chemical groups and assign elements to each of the user-defined chemical groups. However, the Noble Gases and Halogen groups will remain as the first two chemical groups and cannot be modified in any way. SNAP has the capability of reading user modifications to the chemical groupings in legacy input files from RADTRAD versions 3.0.3 and 3.10.
  • Implemented bug fixes to the Reg Guide 1.183 Revision 1 implementation, including adding a X/Q implementation that used the worst two-hour dose time for the EAB rather than each individual dose location's worst two-hour dose time, correctly adding the elementatl iodine passing from the environment, fixing the Rev. 1 PWR default release timing and fractions typo, updating the default release timinings.
  • The <testname>NRC.out file has been renamed to <testname>ExtInfo.out to avoid confusion about importance.
  • Fixed a bug that was preventing the default Test23.med case from running.

 

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Updates:

  • Implemented updates to align with Regulatory Guide 1.183 Revision 1 guidelines, including updating the iodine DF methodology.
  • Fixed an issue where dose summaries were unintentionally removed from the NRC output file.
  • Updated outputs so that only nuclides that are not changing the doses are excluded.
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Updates:

  • Implemented updates to align with Regulatory Guide 1.183 Revision 1 guidelines. A toggle was included to switch between the revisions.  Updates include the addition of the Molybdenum chemical group, a new implementation of the X/q tables, and a new model fo rthe FHA accident type.
  • Fixed a bug when calculating the worst two-hour doses at certain simulation times.
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Updates:

  • The following bugs were fixed: the activity of the daughter products was not being counted when the nuclides in the initial inventory decayed; and the max 2-hour dose was not being correctly captured when the max 2-hour dose occurred later than 24 hours into the run.
  • Additions include ability to set the minimum timestep, ability to add gamma energy and frequency to the .nix file for every nuclide, inclusion of the mass of each nuclide in the output, and removing the error information in the plot file by default.
  • The compiler was updated to Java 8.
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Internal Release for Testing

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See RADTRAD Plug-in Change Log website for change log information.
See SNAP Core Change Log website for change log information.