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NEA-0350 BURSQUID.

BURNY-SQUID, 2-D Burnup of UO2 and Mix UO2 PuO2 Fuel in X-Y or R-Z Geometry

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1. NAME OR DESIGNATION OF PROGRAM:  BURSQUID.
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2. COMPUTERS
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Program name Package id Status Status date
BURNY-SQUID NEA-0350/01 Tested 01-AUG-1974

Machines used:

Package ID Orig. computer Test computer
NEA-0350/01 UNIVAC 1108 UNIVAC 1108
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3. NATURE OF PHYSICAL PROBLEM SOLVED

- Multigroup neutron diffusion and burnup equations for two- to  five- energy groups over a rectangular region of the x-y or r-z   plane.
- For a given geometry and initial enrichment, it calculates the  two- to five- group flux distributions, the nuclides burnt in a  time step t, and then the flux distribution again. This process is    repeated until the maximum burn-up is reached.
- Criticality search by uniform variation of a control isotope.
- Solution of problems with fuel having different geometrical   parameters, by means of supercompositions.
- Recycle and restart options are available.
- UO2 and PUO2-UO2 fuel can be handled.
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4. METHOD OF SOLUTION

The zero-dimension burn-up program RIBOT-5 is coupled with the two-dimension program SQUID and alternately executed. The differential equations are solved by the difference method.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

200 maximum number of compositions
10,000 maximum number of mesh points
5 maximum number of groups.
4 maximum number of supercompositions.
Diagonal symmetry allowed.
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6. TYPICAL RUNNING TIME

- IBM 360/65: 0.15 sec/(mesh point x time step) for five groups and diagonally symmetric problems.
-UNIVAC 1108: about the same as IBM 360/65.
-A factor of 0.5 should be applied for IBM 360/75.
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7. UNUSUAL FEATURES OF THE PROGRAM

Extensive parameters and geometrical description are given in the input. Spectrum cross-sections and atom densities are automatically calculated.
Control rod regions and/or soluble poisons are considered.
Restart or reshuffling option is possible (not automatic).
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8. RELATED AND AUXILIARY PROGRAMS:  RIBOT-5 and SQUID.
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9. STATUS
Package ID Status date Status
NEA-0350/01 01-AUG-1974 Tested at NEADB
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10. REFERENCES

- G. Bussoni, P. Loizzo, S. Lopez, M. Petilli:
  "Burn-up of Pressurized and Boiling Water Reactors"
  CNEN RT/FI (67)28, 1967.
- P. Loizzo:
  "RIBOT, A Physical Model for Light-Water Lattice Calculations"
  BNWL-735, 1968.
- G. Bussoni, S. Lopez:
  "Il programma RIBOT", CNEN Doc.Int. LFCR(66)26.
- A. Daneri, B. Gabutti, E. Salina:
  "SQUID-360: A Multigroup Diffusion Program With Criticality
  Searches for the IBM 360"
  EUR-3882, 1968.
- "BURSQUID" A Multigroup Burnup Program. ENEL, Doc. 4.811/26.
NEA-0350/01, included references:
- BURSQUID - A Multigroup Burnup Program
  ENEL Report, Reactor and Fuel Section, Construction Division
  (September 1972)
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11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0350/01 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  Standard.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHOR

      I. Rosa, G. Zara, R. Guidotti
      ENEL-DCO
      Via G.B. Martini, 3
      00198 Rome, Italy
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16. MATERIAL AVAILABLE
NEA-0350/01
File name File description Records
NEA0350_01.001 LIBRARY DATA 753
NEA0350_01.002 SOURCE PROGRAM (FORTRAN) 7956
NEA0350_01.003 SAMPLE PROBLEM 118
NEA0350_01.004 OUTPUT LIST OF SAMPLE PROBLEM 2139
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17. CATEGORIES
  • D. Depletion, Fuel Management, Cost Analysis, and Power Plant Economics

Keywords: burnup, criticality, multigroup, neutron diffusion equation, r-z, x-y.