Computer Programs
NESC0279 LEOPARD/SPOTS
last modified: 05-MAY-1981 | catalog | categories | new | search |

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

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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. Rules for end-users 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.