1. NAME AND TITLE
PICFEE: Fission Product Inventory Code System.
Nuclear Research Center, Fontenay-aux-Roses, France, through the OECD NEA Computer
Programme Library, Ispra (Varese), Italy.
3. CODING LANGUAGE AND COMPUTER
FORTRAN IV and Assembler language; IBM 360/50/65/91.
4. NATURE OF PROBLEM SOLVED
PICFEE calculates any quantity, such as fission product formation, which is proportioned to the
fission rate in the period following irradiation of 235U, 238U, and Pu fuels. Irradiation levels are
defined by a succession of linear power diagrams. The quantity considered is integrated over the
5. METHOD OF SOLUTION
The nuclide composition equations and irradiation levels are solved by piece-wise integration
with logarithmic interpolation. PREPIC permits the preparation of fission product data from the
results of PEPIN-LE-BREF.
6. RESTRICTIONS OR LIMITATIONS
The problem should be limited to 100 irradiation stages and 30 decay-cooling periods.
7. TYPICAL RUNNING TIME
For 30 levels, 4 test points and 3 nuclides, 10 seconds of IBM 360/50 time are needed
(execution time only).
8. COMPUTER HARDWARE REQUIREMENTS
The code is operable on the IBM 360/50/65/91 computers.
9. COMPUTER SOFTWARE REQUIREMENTS
Standard FORTRAN IV compilers may be used.
B. Barre, "Program for the Integration of Elementary Fission Curves with Consideration of the
Development of Fissile Nuclides," CEA-N-1203 (ORNL-tr-2527) (October 1969).
11. CONTENTS OF CODE PACKAGE
Included are the referenced document and one (1.2MB) DOS diskette which contains source
code and sample problem input and output.
12. DATE OF ABSTRACT
December 1974; updated April 1975.
KEYWORD: FISSION PRODUCT INVENTORY