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NESC0279 LEOPARD/SPOTS

SPOTS, Library Generator for Program LEOPARD from Cross-Sections Data
LEOPARD, Fast and Thermal Neutron Spectra from Temperature and Geometry with Depletion Calculation

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, 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 UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES
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1. NAME OR DESIGNATION OF PROGRAM:  LEOPARD/SPOTS
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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
Program name Package id Status Status date
LEOPARD NESC0279/02 Tested 01-JUN-1976
LEOPARD-TRACA NESC0279/04 Tested 05-MAY-1981

Machines used:

Package ID Orig. computer Test computer
NESC0279/02 IBM 370 series IBM 370 series
NESC0279/04 UNIVAC 1110 UNIVAC 1110
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3. DESCRIPTION OF PROBLEM OR FUNCTION

LEOPARD is a unit cell homogenization and spectrum generation (MUFT-SOFOCATE type) program  with a fuel depletion option.
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4. METHOD OF SOLUTION

The MUFT-SOFOCATE homogeneous medium spectrum analyses with heterogeneous corrections are used. The monoenergetic  Amouyal-Benoist thermal disadvantage factor is applied at each of 172 SOFOCATE energy levels up to 0.625 eV. The U238 resonance integral is forced to agree with a generalized Hellstrand correlation.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

LEOPARD works with nuclides commonly used in water reactors. Thorium and U238 fuel chains are allowed.
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6. TYPICAL RUNNING TIME

Running time is about 15 seconds per case on  an IBM360/75. On a UNIVAC1108 the sample problem executes in 40 seconds.
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7. UNUSUAL FEATURES OF THE PROGRAM

LEOPARD is an engineering design code featuring simple input requirements of physical data.
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8. RELATED AND AUXILIARY PROGRAMS

SPOTS converts a cross section data deck into a LEOPARD library tape.
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9. STATUS
Package ID Status date Status
NESC0279/02 01-JUN-1976 Tested at NEADB
NESC0279/04 05-MAY-1981 Tested at NEADB
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10. REFERENCES

L.  E.  Strawbridge  and  R.  F.  Barry,  Criticality
Calculations for Uniform Water-Moderated Lattices, Nuclear Science
and Engineering, Vol. 23, pp. 58-73, 1965.
             R. F.  Barry, LEOPARD  -  A  Spectrum Dependent  Non-
spatial Depletion  Code for  the IBM7094,  WCAP-3269-26, September
1963, and Revisions, August 30, 1968.
NESC0279/04, included references:
-  Luis Alamillo, Carol Ahnert:
    "Modificacion en el sistema de programas LEOPARD-LIBRA"
     Memo JEN/TCR/A 79-12 (November 1979) In Spanish
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11. MACHINE REQUIREMENTS:  50K (decimal) memory.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC0279/02 FORTRAN-IV
NESC0279/04 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  OS/360 (IBM360) and EXEC2 (UNIVAC1108).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
IBM360 FORTRAN IV H-level compiler library file.
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15. NAME AND ESTABLISHMENT OF AUTHORS

   360           R. F. Barry
                 Atomic Power Division
                 Westinghouse Electric Corporation
                 Box 355
                 Pittsburgh, Pennsylvania  15230
   1108          H. E. P. Krug, Jr.*
                 Jersey Nuclear Company
*Present address-U. S. Nuclear Regulatory Commission
                 Washington, D.C.  20555
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16. MATERIAL AVAILABLE
NESC0279/02
File name File description Records
NESC0279_02.001 INFORMATION 3
NESC0279_02.002 SPOTS -- SOURCE PROGRAM 828
NESC0279_02.003 SPOTS -- SAMPLE PROBLEM INPUT DATA 3789
NESC0279_02.004 SPOTS -- DD CARDS FOR THE EXECUTION 4
NESC0279_02.005 SPOTS -- SAMPLE PROBLEM PRINTED OUTPUT 2632
NESC0279_02.006 LEOPARD -- SOURCE PROGRAM (F4) 2109
NESC0279_02.007 LEOPARD -- SAMPLE PROBLEM INPUT DATA 37
NESC0279_02.008 LEOPARD -- DD CARDS FOR THE EXECUTION 4
NESC0279_02.009 LEOPARD -- SAMPLE PROBLEM PRINTED OUTPUT 1262
NESC0279/04
File name File description Records
NESC0279_04.002 LEOPARD-TRACA INFORMATION FILE 10
NESC0279_04.003 SPOTS SOURCE & SAMPLE CASE INPUT 4614
NESC0279_04.004 LEOPARD-TRACA SOURCE & SAMPLE CASE INPUT 3587
NESC0279_04.005 SPOTS SAMPLE CASE OUTPUT 2645
NESC0279_04.006 LEOPARD-TRACA SAMPLE CASE OUTPUT 610
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17. CATEGORIES
  • B. Spectrum Calculations, Generation of Group Constants and Cell Problems

Keywords: cell calculation, depletion, disadvantage factor, spectra.