NEA-0845 EDO.

1. NAME OR DESIGNATION OF PROGRAM:  EDO.

3. DESCRIPTION OF PROBLEM OR FUNCTION

EDO evaluates individual and collective doses to man from atmospheric releases of noble gases and other gaseous effluents.

4. METHOD OF SOLUTION

The dose calculations are carried out by following the guide- lines of USNRC Regulatory Guide 1.109.
Radiation exposure for maximum individuals and population are estimated within 30 km from the nuclear plant. This area is divided  into 160 circular trapezoids, to which computations are referred.
Four age groups, seven organs for internal dose and two for external dose have been considered.
Dose calculations are done through 14 pathways, 7 for liquid effluents, one for noble gases, and 6 for the rest of gaseous effluents.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The following are the maximum dimension sizes preset in the code:

    73 radionuclides (other than noble gases)
    15 noble gases
   160 circular trapezoids
    31 chemical elements
     4 types of aquatic foods
    15 points of exposure for shorelines
    15 trapezoids influenced by each point
     4 terrestrial food pathways
   100 centres of population.

Some of these limits can be varied.

6. TYPICAL RUNNING TIME

EDO consists of a main program and 8 sub- routines for calculations. Running time for a case which considers all the subroutines, 46 nuclides (liquid effluents), 12 nuclides (gaseous effluents) and 11 noble gases, is about 26 minutes, of which 1 minute 20 seconds are CPU time.
NEA-DB executed the test case included in the package (NEA 0845/01)
on UNIVAC 1110 in 145 seconds of CPU time.

7. UNUSUAL FEATURES OF THE PROGRAM:

8. RELATED AND AUXILIARY PROGRAMS

META/TRAP can be used to obtain meteorological parameters.

10. REFERENCES

- "Calculation of Annual Doses to Man from Routine Releases of
   Reactor Effluents for the Purpose of Evaluating Compliance with
   10 CFR Part 50, Appendix I"
   Regulatory Guide 1.109, Rev. 1
   Nuclear Regulatory Commission, October l977

- J. Rodenas and V. Serradell:
  EDO: A Fortran-V Code for Dosis Evaluation during Normal
  Operation of a Nuclear Power Plant. (Spanish)
  INTN-80-01 (November 1980)

11. MACHINE REQUIREMENTS

Main storage: 46 kwords on UNIVAC 1100 series computer, when segmentation MAP program is used.
8 blocks on tape or 8 tracks of mass storage for 6 files containing constant data input. Two of these files must be direct access files.
    FORTRAN V standard system library functions.
    I/O devices: card reader and printer.

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

EXEC 8 multiprocessor system, level 36R2D (UNIVAC 1100/60)
                              Ver. 33R3-33.3C93 (UNIVAC 1108).

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

Due to memory requirements, the programs are linked using a segmented MAP. Users on other computers than UNIVAC are advised to adhere to the overlay structure, listed in the MAP program.
Also, in order to reduce main storage, dose factor data for ingestion and inhalation are recorded as direct access files.

15. NAME AND ESTABLISHMENT OF AUTHOR

Jose Rodenas Diago and Vicente Serradell Garcia
Departamento de Ingenieria Nuclear
Escuela Tecnica Superior de Ingenieros Industriales
Universidad Politecnica
Camino de Vera 2/n Apartado 2012
VALENCIA, Spain

File name	File description	Records
NEA0845_01.003	EDO INFORMATION FILE	50
NEA0845_01.004	EDO SOURCE (FORTRAN-4)	3395
NEA0845_01.005	EDO JCL	21
NEA0845_01.006	EDO INPUT DATA FOR TEST CASE	465
NEA0845_01.007	EDO PRINTED OUTPUT OF TEST CASE	15004
NEA0845_01.008	LIBRARY (FORMATTED) ON UNIT 2	292
NEA0845_01.009	LIBRARY (FORMATTED) ON UNIT 3	292
NEA0845_01.010	LIBRARY (FORMATTED) ON UNIT 4	73
NEA0845_01.011	LIBRARY (FORMATTED) ON UNIT 8	15
NEA0845_01.012	LIBRARY (FORMATTED) ON UNIT 9	31
NEA0845_01.013	LIBRARY (FORMATTED) ON UNIT 10	31
NEA0845_01.014	EDO ADDITIONAL TEST CASE DATA	1819