1. NAME AND TITLE

EDO: A Code System in Fortran V for the Evaluation of Dose During Normal Operation of a Nuclear Power Plant.

2. CONTRIBUTOR

Calculation Center of the Politechnical University, Valencia, Spain, through the OECD NEA Data Bank, Gif-sur-Yvette, France.

3. CODING LANGUAGE AND COMPUTER

Fortran V; UNIVAC 1110.

4. NATURE OF PROBLEM SOLVED

EDO evaluates individual and collective doses to man from routine releases of nuclear plant effluents.

5. METHOD OF SOLUTION

Radiation exposures 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 of these are for liquid effluents, one for noble gases, 6 for the rest of gaseous effluents.

6. RESTRICTIONS OR LIMITATIONS

The maximum dimension sizes preset in EDO are:

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 population centers.

Some of these limits can be varied.

7. TYPICAL RUNNING TIME

EDO consists of a main program and 8 subroutines 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. 1 minute 20 seconds of this is CPU time.

8. COMPUTER HARDWARE REQUIREMENTS

EDO was developed on the UNIVAC 1108 computer and was tested and operates on the UNIVAC 1110.

9. COMPUTER SOFTWARE REQUIREMENTS

EDO uses the EXEC-8 Operating System.

10. REFERENCE

J. R. Diago and V. S. Garcia, "EDO: A Code in Fortran V for the Evaluation of Dose During Normal Operation of a Nuclear Power Plant," (in Spanish) (November 1980).

11. CONTENTS OF CODE PACKAGE

Included are the referenced document and one (1.2MB) DOS diskette which contains the source codes, sample problem input, and libraries.

12. DATE OF ABSTRACT

August 1986.