NEA-0404 BEST-5.

BEST-5, Power Reactor Fuel Cycle Optimization by Bellman Method

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, AUXILIARIES, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: BEST-5.

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2. COMPUTERS

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Program name	Package id	Status	Status date
BEST-5	NEA-0404/01	Tested	01-AUG-1974
BEST-5	NEA-0404/02	Tested	01-MAR-1975

Machines used:

Package ID	Orig. computer	Test computer
NEA-0404/01	UNIVAC 1108	UNIVAC 1108
NEA-0404/02	IBM 370 series	IBM 370 series

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3. NATURE OF PHYSICAL PROBLEM SOLVED

Fuel cycle optimization in nuclear power plants. Best initial core composition and subsequent reload strategies up to the equilibrium.

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4. METHOD OF SOLUTION: Bellman method of dynamic programming.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Storage allocation - 65k words
max. initial core composition - 256
max. number of fuel types - 15
max. number of loading strategies - 15
max. number of cycles - 24 (7 strategies)
18 (15 strategies)

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6. TYPICAL RUNNING TIME

Running time with
- 25 initial core composition
- 15 fuel types
- 7 loading strategies
- 20 cycles
is 3 to 5 minutes on UNIVAC 1108.

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7. UNUSUAL FEATURES OF THE PROGRAM

Fuel cycle design problems in connection with money interest and replacement energy cost.

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8. RELATED OR AUXILIARY PROGRAMS: RELATED AND AUXILIARY PROGRAMS

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9. STATUS

Package ID	Status date	Status
NEA-0404/01	01-AUG-1974	Tested at NEADB
NEA-0404/02	01-MAR-1975	Tested at NEADB

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10. REFERENCES

- 'BEST-5, A Code for Optimization of Nuclear Fuel Strategy'
ENEL-CPN Internal Technical Report (1974).

NEA-0404/01, included references:

- P. Civita and T. Mazzanti:
  Programma BEST-5 Strategia Ottimale di Caricamento del
  Combustibile Nucleare
  Rif.0/004/20/AUT (Giugno 1974).
- NEA CPL:
  BEST-5 - Fuel Cycle Optimization, Corrections made by the author
  to original UNIVAC version
  Appendix A (May 75).
- P. Civita, P. Fornaciari, and T. Mazzanti:
  Optimal Operational Strategy in Nuclear fuel Management
  Reprint from Nuclear Technology, Vol. 14 (May 1972).
- P. Fornaciari:
  Strategy and Tactics in Nuclear fuel Management
  Reprint from Energia Nucleare, Vol. 18, No. 3 (Marzo 1971).

NEA-0404/02, included references:

- P. Civita and T. Mazzanti:
  Programma BEST-5 Strategia Ottimale di Caricamento del
  Combustibile Nucleare
  Rif.0/004/20/AUT (Giugno 1974).
- P. Civita, P. Fornaciari, and T. Mazzanti:
  Optimal Operational Strategy in Nuclear fuel Management
  Reprint from Nuclear Technology, Vol. 14 (May 1972).
- P. Fornaciari:
  Strategy and Tactics in Nuclear fuel Management
  Reprint from Energia Nucleare, Vol. 18, No. 3 (Marzo 1971).

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11. MACHINE REQUIREMENTS

Core storage - 65k words
back-up storage - 1 disk or drum
card reader
high-speed printer
clock (if option for running time detail evaluation is used).

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0404/01	FORTRAN-V (UNIVAC)
NEA-0404/02	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: UNIVAC EXEC-8. IBM 370/O.S.

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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

Reference must be made to documentation listed under 10, because bit operations are largely used in the program.

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15. NAME AND ESTABLISHMENT OF AUTHOR: P. Civita and T. Mazzanti, ENEL - CPN, Rome, Italy

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16. MATERIAL AVAILABLE

NEA-0404/01

File name	File description	Records
NEA0404_01.001	SOURCE PROGRAM (FORTRAN)	1574
NEA0404_01.002	SAMPLE PROBLEM	107
NEA0404_01.003	OUTPUT LIST OF SAMPLE PROBLEM	1429

NEA-0404/02

File name	File description	Records
NEA0404_02.001	SOURCE PROGRAM (F4)	3656
NEA0404_02.002	JCL	8
NEA0404_02.003	SAMPLE PROBLEM INPUT DATA	107
NEA0404_02.004	SAMPLE PROBLEM PRINTED OUTPUT	1768

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17. CATEGORIES

D. Depletion, Fuel Management, Cost Analysis, and Power Plant Economics

Keywords: cost, fuel cycle, nuclear power plants, optimization.