NESC0925 ARRRG/FOOD.

1. NAME OR DESIGNATION OF PROGRAM:  ARRRG/FOOD.

3. DESCRIPTION OF PROBLEM OR FUNCTION

ARRRG calculates radiation doses to humans for radionuclides released to bodies of water from which people might obtain fish, other aquatic foods, or drinking water, and in which they might fish, swim, or boat.
FOOD calculates radiation doses to humans from deposition on farm or garden soil and crops during either an atmospheric or water release of radionuclides. Deposition may be either directly from the air or from irrigation water.
With both programs, doses may be calculated for either a maximum- exposed individual or for a population group. Doses calculated are a one-year dose and a committed dose from one year of exposure. The exposure is usually considered as chronic; however, equations are included to calculate dose and dose commitment from acute, one-time, exposure.

4. METHOD OF SOLUTION

The radiation doses from external exposure to contaminated farm fields or shorelines are calculated assuming an "infinite" flat plane source of radionuclides. A factor of two is included for surface roughness, and a modifying factor is used to compensate for finite extent in the shoreline calculations. The radionuclide concentrations in aquatic and irrigated food products are based on the radionuclide concentration in the contaminated water, which is based on the release rate of radioactive contamination and the characteristics of the receiving water body. Concentration of radionuclides in plants depends on the concentrations in the soil, air, and water. Concentration of radionuclides in farm animal products, such as milk, meat, or eggs,  depends on the animal's consumption of feed, forage, and water containing radionuclides. For persons swimming in contaminated water, the dose is calculated assuming that the body of water is an  infinite medium relative to the range of emitted radiations. Persons boating on the water are assumed to be exposed to a dose rate half that of swimmers. Internal doses are calculated as a function of radionuclide concentration in food products, ingestion rates, and a  radionuclide-specific factor. The equations for calculating internal dose and dose commitment are derived from those given by the International Commission on Radiological Protection (ICRP) for body  burden and maximum permissible concentration (MPC).

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Maxima of -
   23 possible body organs or tissues  (ARRRG and FOOD)
    5 organs and 100 radionuclides
      in a mixture                     (ARRRG and FOOD)
    5 ingestion pathways               (ARRRG)
    3 external pathways                (ARRRG)
   14 food type pathways               (FOOD)
    1 external pathway                 (FOOD)

6. TYPICAL RUNNING TIME

NESC executed the ARRRG and FOOD sample problems in 62 and 64 CP seconds, respectively, on a UNIVAC1100/44.

7. UNUSUAL FEATURES OF THE PROGRAM:

8. RELATED AND AUXILIARY PROGRAMS

PABLM (NESC Abstract 926) performs  related calculations for accumulated doses from continuous chronic exposure. Other programs which compute organ dose factors include: AERIN (NESC Abstract 908), which calculates organ and tissue burdens resulting from acute exposure to a radioactive aerosol, DACRIN (Abstract CCC-0273), which calculates organ dose from acute of chronic radionuclide inhalation, and SUBDOSA (NESC Abstract 924), which calculates external dose from atmospheric release of radionuclides.

10. REFERENCES

- International Commission on Radiological Protection, Report of
ICRP Committee II on Permissible Dose for Internal Radiation, ICRP    Publication 2, Pergamon Press, New York, 1959.

- B.A. Napier, R.L. Roswell, W.E. Kennedy Jr., D.L. Strenge:
  ARRRG and FOOD - Computer Programs for Calculating Radiation Dose
  to Man from Radionuclides in the Environment.
  PNL-3180 UC-70  (June 1980).
- ARRRG,FOOD Tape Description, PNL-3180 Erratum, and Implementation
  Information
  NESC Note 81-73 (April 3, 1981).

11. MACHINE REQUIREMENTS

51,000 words of memory are required to execute ARRRG; 61,000 words are required by FOOD.

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  EXEC 8.

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

These
programs should be compiled under the ASCII (FTN) compiler.
Addresses of variables in the FOOD program exceed 65K. The user must use the 0 option on the FTN card and the E option on the MAP card.

15. NAME AND ESTABLISHMENT OF AUTHOR

             B.A. Napier*, R.L. Roswell,
             W.E. Kennedy, Jr., and D.L. Strenge
             Pacific Northwest Laboratories
             Battelle
             P.O. Box 999
             Richland, Washington 99352
* Contact

File name	File description	Records
NESC0925_01.003	ARRRG/FOOD INFORMATION FILE	49
NESC0925_01.004	ARRRG SOURCE PROGRAM (FORTRAN-5)	1121
NESC0925_01.005	FOOD SOURCE PROGRAM (FORTRAN-5)	1238
NESC0925_01.006	ARRRG INPUT DATA FOR TEST CASE	23
NESC0925_01.007	FOOD INPUT DATA FOR TEST CASE	27
NESC0925_01.008	MASTER LIBRARY (FORMATTED)	286
NESC0925_01.009	ORGAN DATA LIBRARY (FORMATTED)	1996
NESC0925_01.010	BIOACCUMULATION LIBRARY (FORMATTED)	67
NESC0925_01.011	GROUND DOSE LIBRARY (FORMATTED)	207
NESC0925_01.012	FOOD TRANSFER LIBRARY (FORMATTED)	68
NESC0925_01.013	CONTROL INFORMATION	99
NESC0925_01.014	ARRRG PRINTED OUTPUT OF TEST CASE	959
NESC0925_01.015	FOOD PRINTED OUTPUT OF TEST CASE	574