NEA-0236 BOLERO.

BOLERO, 2 Group Burnup for PWR and BWR in R-Z Geometry with Restart and Recycle

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, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

[ top ]

1. NAME OR DESIGNATION OF PROGRAM: BOLERO.

[ top ]

2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

Program name	Package id	Status	Status date
BOLERO	NEA-0236/01	Tested	01-JUL-1970

Machines used:

Package ID	Orig. computer	Test computer
NEA-0236/01	IBM 360 series	IBM 360 series

[ top ]

3. NATURE OF PHYSICAL PROBLEM SOLVED

One or two dimensional (r-z) calculations of burn-up dependent power distribution in a water reactor. Given the geometry and the initial enrichments, the two group flux distribution is calculated, the nuclides are burned for a time step, and again the flux is calculated, and so until a maximum burn-up is accomplished. Recycle and restart options are available. UO2, PUO2 -UO2, THO2 -UO2 fuel are allowed.
The water densities are made consistent, at every instant with the power distribution (via a scheme of outer iterations). Water flow in each channel can also be made consistent with power distributions by imposing that pressure drops be constant throughout the reactor.

[ top ]

4. METHOD OF SOLUTION

The zero dimensional burn-up programme RIBOT is coupled with a simplified version of the 2-D programme EQUIPOISE and alternately executed. Outer iterations are allowed to recalculate density and/or flow distributions. Control rods are moved to adjust Keff to any desired value.

[ top ]

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

50 regions, 2000 mesh points, 50 compositions, 3 control rod banks in each radial region.

[ top ]

6. TYPICAL RUNNING TIME

On IBM 7094 - .15 sec/(mesh point x time step x outer iteration). Typically for a BWR, 4 or 5 outer iterations are necessary for convergence. Wide-range of running time is seen from one dimension structures (few minutes for the entire life) to full 2000 points problems (10-20 minutes per time step).

[ top ]

7. UNUSUAL FEATURES OF THE PROGRAM

Extensive parameters and geo- metrical description are given in input. Spectra, water densities, control rod positions and atom densities are automatically cal- culated. Calculation can be interrupted at any time. Restart options are fully automatic. Reshuffle options are possible (non automatic). Control material (homogenized rods or soluble poison) can be considered fixed or can be moved during burn-up by imposing Keff = constant.
In this case the control material position is calculated as an eigenvalue of the diffusion system.

[ top ]

8. RELATED AND AUXILIARY PROGRAMS: EQUIPOISE, RIBOT.

[ top ]

9. STATUS

Package ID	Status date	Status
NEA-0236/01	01-JUL-1970	Tested at NEADB

[ top ]

10. REFERENCES

NEA-0236/01, included references:

- G. Buffoni, P. Loizzo, S. Lopez, M. Petilli:
  Burn-up of Pressurized and Boiling Water Reactors
  CNEN RT/FI(67)28 (1967).
- P. Loizzo:
  The CNEN Code System of Reactor Burn-Up
  Paper to be presented at EAES Symposium on Reactor Fuel Manage
  ment at Risoe (October, 1970).

[ top ]

11. MACHINE REQUIREMENTS

a) Programme tape.
b) Input output tapes.
c) One scratch tape.
d) Two restart tapes (can be substituted by scratch tapes or discs if the restart option is not used).

[ top ]

12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0236/01	FORTRAN-IV

[ top ]

13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: FORTRAN II monitor.

[ top ]

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

[ top ]

15. NAME AND ESTABLISHMENT OF AUTHOR

         G. Buffoni and S. Lopez
         CNEN Casaccia
         00060 - S. Maria di Galeria
         Italy

[ top ]

16. MATERIAL AVAILABLE

NEA-0236/01

File name	File description	Records
NEA0236_01.001	INFORMATION	3
NEA0236_01.002	SOURCE PROGRAMME	4868
NEA0236_01.003	INPUT DATA FOR SAMPLE CASE 1.	146
NEA0236_01.004	INPUT DATA FOR SAMPLE CASE 2.	136
NEA0236_01.005	EDITED LIBRARY	350
NEA0236_01.006	SAMPLE CASE 1 OUTPUT LIST	2859
NEA0236_01.007	SAMPLE CASE 2 OUTPUT LIST	5742