PSR-0304 GIRAFFE

GIRAFFE, Isotope Release Analysis in LMFBR Fuel Elements Failure

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: GIRAFFE (General Isotope Release

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2. COMPUTERS

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Program name	Package id	Status	Status date
GIRAFFE	PSR-0304/01	Arrived	09-NOV-2001

Machines used:

Package ID	Orig. computer	Test computer
PSR-0304/01	IBM 3033

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3. DESCRIPTION OF PROGRAM OR FUNCTION

GIRAFFE was designed to provide parameter estimates of the nonlinear discrete measurement models that govern the transport and decay of delayed neutron precursors in a liquid metal fast breeder reactor (LMFBR).

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4. METHOD OF SOLUTION

GIRAFFE incorporates the physical model for isotopic transport and decay into a systematic regression algorithm that enables the user to determine the values of the transport and release parameters. The code also computes the values of several descriptive statistics that provide additional diagnostic information for interpreting the delayed neutron signals and characterizing the condition of breach.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM: None noted.

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6. TYPICAL RUNNING TIME

The sample problem took only a few seconds on the Data General MV 4000 under the AOS/VS operating system.

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7. UNUSUAL FEATURES OF THE PROGRAM:

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8. RELATED AND AUXILIARY PROGRAMS:

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9. STATUS

Package ID	Status date	Status
PSR-0304/01	09-NOV-2001	Masterfiled Arrived

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10. REFERENCES:

PSR-0304/01, included references:

- Kenny C. Gross:
  Theory and Use of GIRAFFE for Analysis of Decay Characteristics of
  Delayed Neutron Precursors in an LMFBR
  ANL-80-55 (July 1980).

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11. MACHINE REQUIREMENTS

The code was originally developed for the IBM 3033 computer. It can also run on the Data General MV family.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
PSR-0304/01	FORTRAN-IV

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

The code was written in FORTRAN IV under the IBM VM/CMS operating system.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

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15. NAME AND ESTABLISHMENT OF AUTHORS

  Argonne National Laboratory
  Argonne
  Illinois, U.S.A.

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16. MATERIAL AVAILABLE

PSR-0304/01

test-case data   mag tapeGIRAFFE Input File                         DATTP
test-case output mag tapeGIRAFFE Output File                        OUTTP
source program   mag tapeGIRAFFE Source Program                     SRCTP
report                   ANL-80-55 (July 1980)                      REPPT

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17. CATEGORIES

C. Static Design Studies

Keywords: LMFBR, delayed neutron precursors.