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NEA-1601 GARDEC.

GARDEC, Estimation of dose-rates reduction by garden decontamination

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1. NAME OR DESIGNATION OF PROGRAM:  GARDEC.
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2. COMPUTERS
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Program name Package id Status Status date
GARDEC NEA-1601/01 Tested 23-FEB-2006

Machines used:

Package ID Orig. computer Test computer
NEA-1601/01 FUJITSU-FMV PC Windows
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3. DESCRIPTION OF PROGRAM OR FUNCTION

GARDEC estimates the reduction of dose rates by garden decontamination. It provides the effect of different decontamination methods, the depth of soil to be considered, dose-rate before and after decontamination and the reduction factor.
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4. METHODS

This code takes into account three methods of decontamination :
(i)digging a garden in a special way, (ii) a removal of the upper layer of soil, and (iii) covering with a shielding layer of soil. The dose-rate conversion factor is defined as the external dose-rate, in the air, at a given height above the ground from a unit concentration of a specific radionuclide in each soil layer.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
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6. TYPICAL RUNNING TIME
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7. UNUSUAL FEATURES
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8. RELATED OR AUXILIARY PROGRAMS:  MLSOIL, DFSOIL
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9. STATUS
Package ID Status date Status
NEA-1601/01 23-FEB-2006 Tested at NEADB
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10. REFERENCES
NEA-1601/01, included references:
- Orihiko Togawa:
GARDEC: A Computer Code for Estimating Dose-Rate Reduction by
Garden Decontamination JAERI-Data/Code 98-038 (December 1998)
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11. HARDWARE REQUIREMENTS
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-1601/01 FORTRAN-77
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13. SOFTWARE REQUIREMENTS:  Windows95, Lahey Computer Systems.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHORS

Orihiko TOGAWA
Department of Environmental Safety Research
Nuclear Safety Research Center
Tokai Research Establishment
Japan Atomic Energy Research Institute
Tokai-Mura, Naka-gun, Ibaraki-ken
JAPAN
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16. MATERIAL AVAILABLE
NEA-1601/01
Batch files
GARDEC executable
REGRES executable
Data files
Input/output files definition
Output files
Fortran source files
JAERI-Data-Code-98-038.pdf  Documentation in PDF format
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis

Keywords: Chernobyl accident, caesium, decontamination, dose rates reduction, long-term external dose, nuclear clean-up, urban areas.