last modified: 21-APR-1987 | catalog | categories | new | search |

IAEA0895 SPAGAF.

SPAGAF, PWR Fuel, Cladding Behaviour with Fission Products Gas Release

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1. NAME OR DESIGNATION OF PROGRAM:  SPAGAF.
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2. COMPUTERS
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Program name Package id Status Status date
SPAGAF IAEA0895/01 Tested 21-APR-1987

Machines used:

Package ID Orig. computer Test computer
IAEA0895/01 BESM-6 DEC VAX 11/780
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3. DESCRIPTION OF PROGRAM OR FUNCTION

SPAGAF calculates the thermal and mechanical behavior of the fuel and cladding in a nuclear fuel rod of PWR during normal operation.
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4. METHOD OF SOLUTION

The radial temperature profile is obtained by the steady-state solution of the one-dimensional equation for heat conduction. Fuel and cladding dimensions, fission gas release and gap conductance are calculated from empirical models.
The solution iterates to convergence on the gap conductance for each axial node and subsequently on gas release rate for the fuel rod.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

No more than 20 variable-length axial regions of the fuel rod, as many as 50 radial  nodes of fuel and no more than 15 time-steps greater than or equal to 1-day duration are allowed.
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6. TYPICAL RUNNING TIME

Usually a running time of 30 seconds per time-step is required.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS

The program SPAGAF is developed from the program GAPCON-THERMAL-2.
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9. STATUS
Package ID Status date Status
IAEA0895/01 21-APR-1987 Tested at NEADB
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10. REFERENCES:
IAEA0895/01, included references:
- Sabine Kretschmer:
  Description of the Fission-Gas Release Program SPAGAF.
  (In German)  (Sept. 30, 1984)
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11. MACHINE REQUIREMENTS:  About 30K words memory is required.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
IAEA0895/01 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  BAMOS.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHORS

         Sabine Kretschmer
         Sektion Energieumwandlung,
         Technische Universitaet Dresden
         German Democratic Republic
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16. MATERIAL AVAILABLE
IAEA0895/01
File name File description Records
IAEA0895_01.001 INFORMATION FILE 59
IAEA0895_01.002 SPAGAF SOURCE PROGRAM 2920
IAEA0895_01.003 SPAGAF SAMPLE PROBLEM INPUT 35
IAEA0895_01.004 SPAGAF SAMPLE PROBLEM OUTPUT 1573
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17. CATEGORIES
  • H. Heat Transfer and Fluid Flow
  • I. Deformation and Stress Distributions, Structural Analysis and Engineering Design Studies

Keywords: cladding, fuel rods, steady-state conditions.