1. NAME AND TITLE OF DATA LIBRARY

COVERV: Compilation of Multigroup Cross-section Covariance Matrices in COVERX Format for Several Important Materials (Generated from ENDF/B-V Data using PSR-093/PUFF2).

2. NAME AND TITLE OF DATA RETRIEVAL PROGRAM

COVERX: A Service for Standard Interface File for Multigroup Cross-Section Covariance Matrices.

3. CONTRIBUTOR

Oak Ridge National Laboratory, Oak Ridge, Tennessee.

4. HISTORICAL BACKGROUND AND INFORMATION

The Coverx Service Module includes seven execution paths to aid in understanding and using multigroup cross-section covariance matrices contained in the standard interface file COVERX.

5. APPLICATION OF THE DATA

When the generation of a COVERX file(s) is(are) complete for a study, a careful review is recommended before it is used. The COVERX service module is available to aid in this review. If identification problems or errors are detected, they can often be quickly corrected by the COVERX service module. At present, the module has seven execution paths which perform the following tasks: 1) Lists the contents of a COVERX file. 2) Allows additional multigroup cross-section covariance matrices from an existing COVERX file. 3) Allows deletions of multigroup cross-section covariance matrices from an existing COVERX file. 4) Merges two COVERX files and creates a new file. 5) Changes the mode of a file from unformatted to formatted and conversely. 6) Allows modification of the records contained in the COVERX file. 7) Selectively edits or copies a file.

6. SOURCE AND SCOPE OF DATA

Multigroup cross-section covariance matrices are created using the PUFF covariance file processing code and placed on a proposed CCCC file.

7. DISCUSSION OF THE DATA RETRIEVAL PROGRAM

Not applicable.

8. DATA FORMAT AND COMPUTER

Card images; IBM 360/370 (D00077I036000).

9. TYPICAL RUNNING TIME

Not applicable.

10. REFERENCES

J. D. Drischler, "The COVERX Service Module of the FORSS System," ORNL/TM-7181 (ENDF- 291) (April 1980).

J. D. Smith and B. L. Broadhead, "Multigroup Covariance Matrices for Fast Reactor Studies," ORNL/TM-7389 (April 1981).

11. CONTENTS OF LIBRARY

Included are the referenced documents and either one DS/HD 3.5-in. (1.44 MB) diskette or one DC6150 cartridge tape in TAR format, which contains the source program, matrix library, and sample problem input and output.

12. DATE OF ABSTRACT

December 1983, April 1985.