DLC-0167 ZZ-FGR-DOSE.

1. NAME OR DESIGNATION OF PROGRAM:  ZZ-FGR-DOSE.

3. DESCRIPTION OF PROGRAM OR FUNCTION


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  FORMAT: special format (direct access ASCII)

  NUMBER OF GROUPS: --

NUCLIDES: contains dose coefficients (per unit activity inhaled or  ingested) for both intakes and external exposures to 825 radionucli- des as tabulated in Federal Guidance Reports 11 and 12. The external dose coefficients are for submersion in contaminated air, immersion  in contaminated water, and exposure to contaminated soil.

  ORIGIN: DLC-80/DRALIST

  WEIGHTING SPECTRUM: --

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The data library contains dose coefficients for both intakes and external exposures to radionuclides. The dose coefficients for radionuclide intake were computed at ORNL during preparation of ICRP Publication 30. Coefficients for intakes for some organs were published in the Supplements to Publication 30.

4. METHOD OF SOLUTION

The dose coefficients contained in the library  have application in occupational and environmental dose assessments. The coefficients for radionuclide intakes, from FGR 11, were used in the derivation of the Annual Limits on Intake and Derived Air Concentrations used in occupational radiation protection and thus may be applicable to regulatory situations. In addition these coefficients are applicable to environmental situations, although they are limited to the adult.

The data library contains dose coefficients for intakes and external exposures to radionuclides as tabulated in Federal Guidance Reports 11 and 12. The dose coefficients for radionuclide intake (dose per unit activity inhaled or ingested) in FGR 11 were abstracted from the International Commission on Radiological Protection (ICRP) and the Oak Ridge National Laboratory (ORNL) dosimetric data files assembled during the preparation of Publication 30 of the International Commission on Radiological Protection. The dose coefficients for external exposure (dose per unit radionuclide concentration) in FGR 12 are based on new calculations of the radiation field for nuclides distributed in environment. Data are presented for 825 radionuclides. Tables 2.1 and 2.2 of FGR 11 and Tables III.1 through III.7 of FGR 12 are contained in the data library.

The external dose coefficients contained in the library are for submersion in contaminated air, immersion in contaminated water, and exposure to contaminated soil. The latter includes consideration of  the radionuclides distributed (a) on the soil surface, (b) to depth  1 cm, (c) to a depth of 5 cm, (c) to a depth of 15 cm, and (d) to an infinite depth. These data, contained in Tables III.1 through III.7  of Federal Guidance Report 12, are based on new calculations of the  energy and angular distribution of the photons on the body and their subsequent transport into the body. The organ dose coefficients for  nuclidesdistributed on or in the soil were undertaken to properly account for the energy and angular distribution of the radiations on the body. Earlier tabulations often treated the radiation field from such source as being isotropic. The new tabulation also includes explicit consideration of bremsstrahlung. While the photon contribution to the organ dose is based on new Monte Carlo calculations, the skin dose from emitted electrons is based on the methods of Kocher (se DOE/EH-0070).

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:

6. TYPICAL RUNNING TIME

Access to dose coefficients for a nuclide is  negligible.

The interactive programs CHAIN and README provided in the package ZZ-FGR-DOSE were executed at the NEA-DB on a PC Brett (Pentium processor, 75 MHz). Once a nuclide is specified at the console, the generation of its decay chain (program CHAIN) and the display of the tables containing its internal and external dose coefficients is almost instantaneously performed.

7. UNUSUAL FEATURES OF THE PROGRAM:

8. RELATED AND AUXILIARY PROGRAMS

READEM, a program to read dose coefficient data files and display them on the screen.
The dose coefficients of this library are based on the nuclear decay data of ICRP Publication 38. The external dose coefficients may be considered to supersede those of DLC-144/DOSDAT-DOE. The latter data library was produced using the DOSFACTER-DOE code (CCC-536/DOSFACTER-DOE) with the nuclear decay data library DLC-80/DRALIST. The DOSFACTER-DOE code was described in DOE-EH-0070  and was developed by D.C. Kocher. The internal dose coefficients were computed at ORNL using the ICRP code of Watson and Ford (CCC-384/IDC) and were abstracted from the ICRP/ORNL dosimetric data files during preparation of Federal Guidance Report 11.

10. REFERENCES

- DOE (1988) "External Dose-Rate Conversion Factors for Calculation
  of Dose to the Public",
  DOE/EH-0070
- ICRP (1977). International Commission on Radiological Protection.
  "Recommendations of the International Commission on Radiological
  Protection",
  ICRP Publication 26, Annals of the ICRP Vol. 1, No.3.
- ICRP (1979). International Commission on Radiological Protection.
  "Limits for Intakes of Radionuclides by Workers",
  ICRP Publication 30, Annals of the ICRP Vol. 2, No.3/4.
- ICRP (1979). International Commission on Radiological Protection.
"Radionuclide Transformations: Energy and Intensity of Emissions",    ICRP Publication 38, Annals of the ICRP Vol 11/13.
- D.C. Kocher (1981):
  "Dose-Rate Conversion Factors for External Exposure to Photons
  and Electrons"
  NUREG/CR-1918 (ORNL/NUREG-79)

- K.F. Eckerman et al.:
  Limiting Values of Radionuclide Intake and Air Concentration
  and dose Conversion Factors for Inhalation, Submersion and
  Ingestion
  Federal Guidance Report no.11
  EPA-520/1-88-020 (September 1988)
- K.F. Eckerman and J.C. Ryman:
  External Exposure to Radionuclides in Air, Water and Soil
  Federal Guidance Report no.12
  EPA 402-R-93-081 (September 1993)

11. MACHINE REQUIREMENTS:

The programs CHAIN (to generate the decay chain for a specific nuclide) and READEM (to display the tables with the internal and external dose coefficients) were run at the NEA/DB on a PC Brett (Pentium processor, 75 MHz, base memory of 640 Kbyte and extended memory of 15648 Kbyte). The filesize of the corresponding executable files created using the Microsoft FORTRAN tools (compiler Version 5.1 and linker Version 5.15), are 44 and 42 Kbyte respectively.

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

Both programs CHAIN and READEM were run under MS-DOS 6.2 on a PC-Brett (Pentium processor, 75 MHz). The corresponding executable files were compiled and linked using the Microsoft FORTRAN compiler (Version 5.10) and linker (Version 5.15).

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The
data retrieval program READEM illustrates the manner the dose coefficient files might be accessed by other software. The dose-coefficient files are direct access files and an index file is  provided which READEM searches to obtain the record number for the nuclide of interest in the dose coefficient files. The index file contains information regarding the half-life, decay mode, radioactive daughter products, etc. (see Appendix A of FGR 12 for additional details).

15. NAME AND ESTABLISHMENT OF AUTHORS

Contributed by: Radiation Safety Information Computational Center
                Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.

Developed by:   Oak Ridge National Laboratory, Oak Ridge,
                Tennessee, USA

File name	File description	Records
DLC0167_02.001	Information file of package ZZ-FGR-DOSE	322
DLC0167_02.002	Source code file of program CHAIN	625
DLC0167_02.003	Source code file of program READEM	670
DLC0167_02.004	Batch file to create the CHAIN executable	34
DLC0167_02.005	Batch file to create the READEM executable	34
DLC0167_02.006	Executable of program CHAIN	0
DLC0167_02.007	Executable of program READEM	0
DLC0167_02.008	Direct-access file with pointers to records	0
DLC0167_02.009	Committed dose equivalent via inhalation	0
DLC0167_02.010	Committed dose equivalent via ingestion	0
DLC0167_02.011	Dose equivalent for submersion in air cloud	0
DLC0167_02.012	Dose equivalent for immersion in water pool	0
DLC0167_02.013	Dose equivalent for infinite plane source	0
DLC0167_02.014	Dose equiv. for source in top 1cm of soil	0
DLC0167_02.015	Dose equiv. for source in top 5cm of soil	0
DLC0167_02.016	Dose equiv. for source in top 15cm of soil	0
DLC0167_02.017	Dose equiv. for infinitely thick slab (4mfp)	0
DLC0167_02.018	DOS file-names	18