1. NAME AND TITLE

WIMSCORE-ENEA: Code System to Process WIMSD4 Interface Output Files and Generate Two-Group Data for Reactor Calculations.

2. CONTRIBUTORS

Soreq Nuclear Research Centre, Yavne, Israel and the ENEA Center of Bologna, Italy through the Nuclear Energy Agency Data Bank, Issy-les-Moulineaux, France.

3. CODING LANGUAGE AND COMPUTER/OPERATING SYSTEM

Fortran IV; IBM 3090.

4. NATURE OF PROBLEM SOLVED

The code processes the WIMS-D/4 binary output files for producing two-group microscopic cross sections and macroscopic lattice cell constants (zone and cell macroscopic cross sections, D, M, and K-infinity) in a more flexible format needed for reactor burnup codes like CITATION, for reactor dynamics codes like NADYP-W and for other reactor codes. The purpose of the WIMSCORE-ENEA code is to facilitate the automation of data transfer between the cell calculation code WIMS and the diffusion-burnup codes. Use is made of the VARY storage manipulation package. WIMSCORE generates output files to be used by the codes TDB, TRITON, CITATION.

5. METHOD OF SOLUTION

The code spatially homogenizes and group collapses the various cross sections into two-group homogenized microscopic cross sections using the flux per mesh for each energy group for WIMS multigroup lattice calculations.

6. RESTRICTIONS OR LIMITATIONS

WIMSCORE-ENEA requires WIMSD4 binary output files as input. Only WIMS pin cell calculation has been tested.

7. TYPICAL RUNNING TIME

For a typical run with 27 WIMS energy groups, 10 large burnup steps, 1 second is required on a IBM/3090 computer. NEA-DB executed the test case included in this package on an IBM 3090 computer in 6 seconds of CPU time.

8. COMPUTER HARDWARE REQUIREMENTS

To run the test case on an IBM 3090, 2050 kB of main storage are required.

9. COMPUTER SOFTWARE REQUIREMENTS

Main storage depends on data array DIMENSIONS defined in the MAIN routine, but can easily be adjusted. Original assembler storage allocation routines mentioned in the report are not included in the package. A Fortran IV compiler is required.

10. REFERENCES

M. G. Borgia and D. G. Cepraga, "WIMSCORE-ENEA Code - To Process the Interface Output Files of WIMS D-4 Code and to Generate Two-Group Data for Reactor Calculations," (ENEA Draft).

Y. Bartal and S. Yiftah, "WIMSCORE - A Code for Producing Group Constants for TDB, TRITON and CITATION Codes from WIMS Output," IA-1380 (January 1983).

11. CONTENTS OF CODE PACKAGE

Included in the package are the referenced documents and 1 DS/HD disk which includes the source file, test case input data and output.

12. DATE OF ABSTRACT

December 1992.

KEYWORDS: FORMAT TRANSLATION