1. NAME AND TITLE

FISP-6: An Enhanced Code for the Evaluation of Fission Product Inventories and Decay Heat

2. CONTRIBUTOR

Berkeley Nuclear Laboratories, England through NEA Data Bank, France.

3. CODING LANGUAGE AND COMPUTER

Fortran IV, IBM 3090

4. NATURE OF PROBLEM SOLVED

FISP-6 calculates fission product inventory and release rates in irradiated fuel using a point model for irradiation and cooling conditions specified by the user.

5. METHOD OF SOLUTION

FISP-6 uses an analytical solution with linearized build-up and decay chains of the fission products. Using a particular form of the general solution, the code is able to reduce the problems of rounding errors.

6. RESTRICTIONS OR LIMITATIONS

None noted.

7. TYPICAL RUNNING TIME

The sample problems took 15.6 seconds on an IBM 3090 at NEA-DB.

8. COMPUTER HARDWARE REQUIREMENTS

FISP-6 runs on IBM mainframes (IBM 3090).

9. COMPUTER SOFTWARE REQUIREMENTS

A Fortran IV compiler is required.

10. REFERENCE

A. Tobias, "FISP6: An Enhanced Code for the Evaluation of Fission Product Inventories and Decay Heat," TPRD/B/0097/N82 (June 1982).

11. CONTENTS OF CODE PACKAGE

Included are the referenced document and one (1.2MB) DOS diskette containing the source and sample cases.

12. DATE OF ABSTRACT

November 1990.