Computer Programs
ESTS0308 TRITMOD.
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ESTS0308 TRITMOD.

TRITMOD, Environmental Transport and Cycling of H3 after Atmospheric Releases

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1. NAME OR DESIGNATION OF PROGRAM:  TRITMOD.
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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.
Program name Package id Status Status date
TRITMOD ESTS0308/01 Arrived 22-MAY-2001

Machines used:

Package ID Orig. computer Test computer
ESTS0308/01 IBM PC
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3. DESCRIPTION OF PROBLEM OR FUNCTION

TRITMOD is a steady-state advection model of tritium dispersion and cycling in underlying vegetation and soil from an atmospheric point source. Radial geometry is assumed. Tritium is assumed to be released to the atmosphere in both gaseous tritiated hydrogen and tritiated water vapor form. The PC version contains a preprocessor, TRITFST, which allows the user to view the parameters used as model input data and  to change any one of them, if desired.
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4. METHOD OF SOLUTION

The steady-state dispersion equation is solved  iteratively by integration from the furthest distance from the source back to the source.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Steady-state
conditions and radial geometry are assumed.
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6. TYPICAL RUNNING TIME

Running time is dependent on the radius of interest. The sample problem required 30 seconds on an IBM PC/AT using the compiled BASIC TRITMOD program; 4.5 minutes are required when run from the TRITMOD BASIC source.
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7. UNUSUAL FEATURES OF THE PROGRAM

TRITMOD takes into account the deposition of HT and the conversion of HT to HTO.
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
ESTS0308/01 22-MAY-2001 Masterfiled Arrived
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10. REFERENCES

- C.E. Murphy, Jr. and M.M. Pendergast:
  Environmental Transport and Cycling of Tritium in the Vicinity of
  Atmospheric Releases
  IAEA Symposium on Behavior of Tritium in the Environment
  San Francisco, 1978, DP-MS-78-25, IAEA-SM-232/83.
- System/360 Continuous System Modeling Program User's Manual
  International Business Machines Corporation, White Plains, N.Y.
- TRITMOD, NESC No. 814.PC, TRITMOD IBM PC Version Flexible Disk
  Cartridge Description
  NESC 91-11 (November 6, 1990).
ESTS0308/01, included references:
- C.E. Murphy et al.:
  Environmental Transport and Cycling of Tritium in the Vicinity
  of Atmospheric Releases
  IAEA/NEA International Symposium on the Behavior of Tritium in the
  Environment, San Francisco, October 16-20, 1978
  DP-MS-78-25 (IAEA-SM-232/80) 1978
- Sample Problem Output
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11. MACHINE REQUIREMENTS:
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
ESTS0308/01 BASIC
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  DOS 3.1 (IBM PC).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHOR

C.E. Murphy, Jr.
Environmental Transport Division
Savannah River Laboratory
E.I. duPont de Nemours and Company, Inc.
Aiken, South Carolina 29801, U. S. A.
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16. MATERIAL AVAILABLE
ESTS0308/01
TRITFST.BAS TRITFST preprocessor source
TRITMD2.BAS TRITMOD BASIC source
TRITFST.EXE TRITFST executable
TRITMD2.BAS TRITMOD executable
TRITNIN.86 TRITFST default input parameters
TRITIN.86 Headings used by TRITFST
TRITN TRITFST output & sample problem input
TRITOUT TRITMOD sample problem output
AUTOEXEC.BAT Batch file to execute TRITMOD
TRITMOD.DOC Information file
prog. note  Sample problem output
report DP-MS-78-25 (1978)
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17. CATEGORIES
  • R. Environmental and Earth Sciences

Keywords: advection, deposition, dispersions, environmental transport, tritium.