• The probabilistic version was updated and released including the following features:
• Default data distributions for important variables
• Template files for non-radionuclide dependent variables
• A help system to display the input distributions
• Feedback on how long the calculation will take
• A robust user input screen for setting distributions, input correlations, & sampling characteristics
• An estimate of the variability of the end results given the sampling size and characteristics
• A set of 4 output results including interactive tables and graphs, a full report, and a structured database with all the raw samplings and intermediate results
• Input-output correlation analysis
• Analysis with both the peak-of-the-means and means-of-the-peaks methods
• Windows user interface code upgraded from 16-bit VB4 to 32-bit VB6
• Quadruple precision used in Bateman calculations for decy/ingrowth source factors. This is important for decay chains of 5 or longer
• Quadruple precision used in Romberg integrations. This shortened calculations times and completely eliminated convergence failure errors
• Improved integrated risk convergence
• Introduced ratio between default DCF and DCF for inorganic C-14
• Included occupancy considerations for the inhalation of gaseous C-14 and H-3. Removed consideration of H-3 in particulate form
• Consider evasion losses of C-14 and H-3 for groundwater pathways
• Improved robustness when chain retardation factor ratios widely vary in different zones
• Add ability to perform non-integrated risk (1 point)
• Improved radon progeny risk calculation

RESRAD 5.95 (12/23/99):

RESRAD 5.91 (9/23/99):

• Revamp DCF editor
• Gracefully notifies user if a calculation error occurs
• Uncertainty analysis improvements
• Time integration of dose
• Allow user to find pathway peaks
• Improve treatment of 4th and 5th daughter radionuclide in groundwater calculation
• Y2K compliance check
• Provide windows standard help
• Add additional nuclides
• Ability to run batch files
• Allow sensitivity analysis on plant factors
• Distribute with Uncertainty analysis (still under "For Test and Evaluation")
• Interface improvements

RESRAD 5.82 (4/30/98):

• Allow plot data to be exported to tab-delimited text file
• Corrected Installation problem on Windows 3.1
• Corrected plotting problem for soil guidelines

RESRAD 5.81 (4/9/98):

• Corrected plotting problem for soil guidelines
• Corrected sensitivity plotting problems with branching radionuclides
• Enhanced file saving checks before running
• Does not allow negative time since waste placement
• Corrected uncertainty plotting problems with branching radionuclides

RESRAD 5.80 (3/13/98):

• Support for Windows NT
• Repaired "Export to EXCEL" for latest versions
• Allow sensitivity on leaching and solubility
• Various interface improvements

RESRAD 5.782 (10/31/97):

• Fixed various interface problems

RESRAD 5.781 (8/29/97):

• Change default Mass Loading Factor in occupancy factor to 0.0001 g/m3
• Easier Cancel option
• Reset Co-60 Plant Transfer Factor

RESRAD 5.78 (8/20/97):

• Correctly initialize meat concentrations
• Correct plotting problem with branching radionuclides
• Use exponential notation on plots when appropriate

RESRAD 5.77 (8/8/97):

• Do not print peak dose table when peak is a user selected time
• Allow plotting of soil conentrations
• Initialize meat concentration

RESRAD 5.76 (7/25/97):

• Ensure convergence for Kd calculation, given water concentrations
• Disallow user selection of variables not supported for sensitivity analysis
• Add sensitivity description to graphics title
• Add single pathway name to graphics title
• Allow foe sensitivity analysis of single nuclide and single pathway
• Minor interface cleanup
• Installation cleanup
• Add menu selection to allow user to save all reports
• Plot data at time of maximum dose (peak)

RESRAD 5.75 (7/4/97):

• Incorporation of new area factor model for inhalation
• Time integrated risk
• User's ability to change radon DCF
• User's ability to change Plant Factors
• Compatibility with Uncertainty Analysis
• DCF Library Save/New feature cleanup
• Graphics look update
• Graphics interface
• Button prompts for navigator
• C14/H3 calculations off then pathways off
• Groundwater reorganization
• External DCF includes beta component

RESRAD 5.70 for Windows (1/31/97):

• Release of Windows Version with DOS "emulator"
• Runs on Windows 3.1 and Windows 95

RESRAD 5.62 (7/3/96):

• Updated default Slope Factors from latest HEAST tables.
• Added an error check to the Fortran module to avoid file collisions in Windows

RESRAD 5.61 (8/28/95):

• Corrected an error in the calculation of water-independent radon doses for graphic points in cases where the contaminated area is less than 100 meters.
• Corrected an error which caused short-lived radionuclides to have a zero Kd if the calculations are run after changing the half-life, but before going to screen R012.
• Corrected an error in the calculation of food storage time correction factors for small concentrations near the end of a decay chain.
• Half lives were changed to reflect ICRP-38 data.

RESRAD 5.60 (4/25/95):

• Corrected errors in graphing interface routine (RESPLOT).
• Corrected U-238 external dose conversion factor to FGR-12 value.
• Updated Slope factor tables.
• Modified internal dose conversion factors to match FGR-11.

RESRAD 5.50 (3/14/95):

• Replace the external gamma pathway model with a model based on the FGR-12 database.
• Significantly modified the graphing interface.
• Corrected an error in the concentration report for radionuclides with branch decay
• Changed the default value reported for the foundation depth in the Radon pathway in SUMMARY.REP to the new default of -1.
• Added a warning and check to prevent attempting calculation of Kd's using water concentration in cases where there are no unsaturated zones.
• Corrected a problem with switching to a 6 month cut-off half-life with Sb-125 selected

RESRAD 5.44 (2/16/95):

• Changed the radon pathway's default foundation depth to -1 m to assume (conservatively) that buildings are built on top of the contaminated zone.
• Added various checks to input, calculation, and output.
• modified Radon pathway to reduce execution time.

RESRAD 5.43 (1/11/95):

• Modification to correct a potential bug which may miscalculate daughter concentrations in the saturated zone in cases where there is no unsaturated zone.

RESRAD 5.42 (1/5/95):

• Corrected SOILD external calculations (Shape factor between -1 and 0).

RESRAD 5.41 (5.40) (11/28/94):

• Modification to the cover and depth factor for the Tritium and C-14 ingestion and inhalation pathway models.
• Changed the effective surface density to correspond with the current default soil density.
• Changed tritium and C-14 deposition velocity from 0.0 to 0.001 m/sec
• Begin distribution of RESRAD.QA input and report to verify RESRAD calculations on a user's computer

RESRAD 5.191 (8/22/94):

• Modified soil ingestion rate for onsite occupancy
• fixed an occasionally incorrect Summary Report entry which showed the summed pathway dose total to be zero.

RESRAD 5.19:

• Support networked printers.
• Modify interface to correctly disable/enable parameters according to the current pathways.

RESRAD 5.18 (7/13/94):

• User interface modified to reflect comments from Haliburton NUS. These modifications include changes to the allowable ranges of several parameters and better checks on sensitivity ranges.
• User interface modified to always display "Hot Keys".

RESRAD 5.17:

• Modification to account for decay and ingrowth during food storage time (from harvest to consumption).

RESRAD 5.16:

• Minor correction to the Dose Factor Library Files.

RESRAD 5.05 (3/11/94):

• Corrected a potential problem in the calculation of daughter transfer function the ground water transport model.
• Added site-specific data files name to screen banner line.

RESRAD 5.04 (2/23/94):

• Allow user access to soil mixing depth when soil ingestion is the only active pathway.
• Correct a problem caused by certain cover depths and densities.

RESRAD 5.03 (12/16/93):

• Incorporation of ROMBERG integration method.

RESRAD 5.02 (12/15/93):

• modified DEFAULT.DAT and PATHCHK.DAT to correct minor bugs

RESRAD 5.01 (12/2/93):

• Corrected the concentration report for radionuclides with a spontaneous fission branch fraction.
• Modify interface checks and enable/disable features.
• Add Laser Jet 4 to the printer menu.

RESRAD 5.00 (9/24/93):

• See Manual ANL/EAD/LD-2 for status