IAEA0895 SPAGAF.

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

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM 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: SPAGAF.

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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
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.