Computer Programs

NEA-1235 AND.

NEA-1235 AND.

AND, Atomic Number Densities for Criticality Calculation

NAME, COMPUTER, PROBLEM, SOLUTION, RESTRICTIONS, CPU, AUXILIARIES, STATUS, REFERENCES, REQUIREMENTS, LANGUAGE, OPERATING SYSTEM, AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM

AND.

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2. COMPUTERS

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Program name	Package id	Status	Status date
AND	NEA-1235/01	Tested	23-FEB-1990

Machines used:

Package ID	Orig. computer	Test computer
NEA-1235/01	FACOM M-780	IBM 3083

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3. DESCRIPTION OF PROGRAM OR FUNCTION

AND is designed to obtain reliable atomic number densities for neutronic calculation by the use of well established physical constants (Avogadro number, atomic mass, material density) and theoretical and experimental formulas.

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4. METHODS

The theoretical formulas are employed to calculate number densities, except hydrogen number density in solutions where the formulas obtained by experiments are utilized.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

AND treats the fuel materials which are commonly seen at fuel fabrication plant and spent fuel reprocessing plant; namely U-H2O, UO2-H2O, UO3-H2O, ADU-H2O, UO2F2 aqueous, U3O8-H2O, UO2(NO3)2 aqueous, Pu-H2O, PuO2-H2O, Pu(NO3)4 aqueous, PuO2.UO2-H2O, and Pu(NO3)4-UO2(NO3)2 aqueous.

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6. TYPICAL RUNNING TIME

NEA-DB executed the test case included in this package on an IBM 3083 computer in 0.15 seconds of CPU time.

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8. RELATED OR AUXILIARY PROGRAMS

The output format of AND is designed to meet with the input format of MAIL (code to produce effective macroscopic cross sections). MAIL produces the cross section data to be fed directly to KENO-IV, and ANISN.

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9. STATUS

Package ID	Status date	Status
NEA-1235/01	23-FEB-1990	Tested at NEADB

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10. REFERENCES

NEA-1235/01, included references:

- Y. Komuro, T. Sakai and S. Nakamaru:
  Calculation Methods of Atomic Number Density for
  Various Nuclear Materials.
  JAERI-M 87-037 (JW 237)  (March 16, 1987) (in Japanese)

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11. HARDWARE REQUIREMENTS

The test case required 204K bytes of IBM 3083 main storage.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-1235/01	FORTRAN-77

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13. SOFTWARE REQUIREMENTS

MVS/XA with compiler VS FORTRAN Level 2.3.0 (IBM 3083).

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15. NAME AND ESTABLISHMENT OF AUTHORS

Yuichi KOMURO, Tomohiro SAKA, Shou-ichi NAKAMURA
Department of Fuel Safety Research
Tokai Research Establishment
Japan Atomic Energy Research Institute
Tokai-mura, Naka-gun, Ibaraki-ken
Japan

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16. MATERIAL AVAILABLE

NEA-1235/01

File name	File description	Records
NEA1235_01.001	Information file	63
NEA1235_01.002	AND FORTRAN-77 source	1079
NEA1235_01.003	Sample input data	17
NEA1235_01.004	JCL used at Data Bank	18
NEA1235_01.005	Sample output by Data Bank	230
NEA1235_01.006	Sample output by the author	33

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17. CATEGORIES

B. Spectrum Calculations, Generation of Group Constants and Cell Problems

Keywords: criticality, cross sections.