last modified: 12-OCT-1993 | catalog | categories | new | search |

IAEA1219 APUD-3.0.

APUD-3.0, Off-Site Contamination Assessment from Accidental Release

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1. NAME OR DESIGNATION OF PROGRAM:  APUD-3.0.
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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
Program name Package id Status Status date
APUD-3.0 IAEA1219/01 Tested 12-OCT-1993

Machines used:

Package ID Orig. computer Test computer
IAEA1219/01 IBM PC PC-80486
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3. DESCRIPTION OF PROGRAM OR FUNCTION

APUD is a research exercise aimed at providing rough yet fast predictive information to assist alert and intervention in the early- to-intermediate phases of nuclear accidents. Basically, the code calculates integral solutions of the advection-diffusion equation for the airborne activity concentration and related quantities such as deposition rates, time- integrated concentrations, and depositions that were brought to compact algebraic expressions under the following assumptions:
(i) a uniform wind field over the territory and time of relevance; a vertical fall rate depending on the radii of the particles;
(ii) K-type eddy-diffusion coefficients, which are uniform in space  and time-independent;
(iii) flat terrain, no ground reflection, no inversion layers;
(iv) point-like virtual source above the real source at ground.
The code handles 21 nuclides which are important in abnormal nuclear events. Preliminary intervention zones can be determined rapidly. The program handles nine geographical maps mainly covering South- East Europe.
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4. METHOD OF SOLUTION:
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Since essentially a
Gaussian dispersion model is employed, the program may be applied to distances up to a few hundred kilometers from the source, at most. The time scale should be limited to periods of stable meteorological conditions.
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6. TYPICAL RUNNING TIME

With an IBM PC/At with 26 MHz clock time and  math co-processor, the following maximum execution times should be expected:
an intervention zone contour: 3 minutes
a concentration/deposition rate contour: 20 seconds
a time-integrated quantity contour: 10 seconds
a pseudo-3D view of territory orography: 1 minute
a map rescaling: 1 minute.
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7. UNUSUAL FEATURES OF THE PROGRAM

Interactive operation designed for timely intervention. (Over)simplified inputs based on "best guesses" in order to obtain intervention recommendations quickly. Quick re-iteration possible.
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
IAEA1219/01 12-OCT-1993 Tested at NEADB
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10. REFERENCES

- "Derived Intervention Levels for Application in Controlling
   Radiation Doses to the Public in the Event of a Nuclear Accident
   or Radiological Emergency"
   IAEA Safety Series No. 81, VIENNA, 1986
IAEA1219/01, included references:
- Dan V. Vamanu:
  APUD-3.0, Alert and Intervention Oriented Fast Assessment of
  Off-Site Contamination Following Accidental Radioactive Releases
  User's Manual
  RB-39-1991 (June).
- Dan V. Vamanu:
  Models in Radioecology, I. Generic Equations for the Atmospheric
  Dispersion of Radioactive Releases
  RB-34-1990 (November).
- Dan V. Vamanu:
  Models in Radioecology, II. Multis-A Post-Accident Assessment
  Model and Code to Map Time-Integrated Concentrations and
  Depositions
  RB-35-1990 (November).
- Dan V. Vamanu:
  User's Manual
  FT-354-1989 (April).
- Dan V. Vamanu:
  Protracted Releases: Inferring Source Terms and Predicting
  Dispersal
  FT-325-1988 (February).
- D.V. Vamanu:
"Notes on Protracted Releases"
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11. MACHINE REQUIREMENTS

IBM PS/2 ; IBM/PC/AT or compatible; EGA;
1 MB of hard disk space. Math co-processor recommended.
IAEA1219/01
NEA-DB ran the test case included in this package on a  DELL 486P33 desktop computer.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
IAEA1219/01 BASIC
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

MS-DOS 3.30 or higher. Microsoft QuickBasic 4.0 compiler.
IAEA1219/01
The test case included in this package was run on a PC/80486 under MS-DOS Version 5.0 using the Microsoft QuickBasic interpreter Version 4.5.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The
permanent data reside in the BASIC code APUD.BAS, which may be changed according to requirements.
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15. NAME AND ESTABLISHMENT OF AUTHORS

   Dan V. VAMANU
   Institute for Atomic Physics
   Institute of Nuclear Physics and Engineering
   Department 6
   O.O. Box MG-6
   76900 BUCHAREST, Romania.
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16. MATERIAL AVAILABLE
IAEA1219/01
File name File description Records
IAEA1219_01.001 APUD.INF Information file 58
IAEA1219_01.002 README.EXE Help execution file 0
IAEA1219_01.003 APUD.BAS Source file (Basic) 0
IAEA1219_01.004 OROGRAPH.APD Source file (Basic) 0
IAEA1219_01.005 MAIN.APD Source file (Basic) 0
IAEA1219_01.006 AGEN.BAS Source file (Basic) 0
IAEA1219_01.007 AGEN1.BAS Source file (Basic) 0
IAEA1219_01.008 ROM.NW Input file 0
IAEA1219_01.009 ROM.N Input file 0
IAEA1219_01.010 ROM.NE Input file 0
IAEA1219_01.011 ROM.W Input file 0
IAEA1219_01.012 ROM.CT Input file 0
IAEA1219_01.013 ROM.E Input file 0
IAEA1219_01.014 ROM.SW Input file 0
IAEA1219_01.015 ROM.S Input file 0
IAEA1219_01.016 ROM.SE Input file 0
IAEA1219_01.017 APUD.EXE APUD executable 0
IAEA1219_01.018 DOS file-names 17
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis

Keywords: accidents, aerosols, atmospheric precipitations, contamination, deposition, fallout deposits, radioactive release.