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NEA-0926 MARIA-SYSTEM.

MARIA-SYSTEM, PWR Fuel Assembly Calculation for Program CARMEN-System and Simulation

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1. NAME OR DESIGNATION OF PROGRAM:  MARIA-SYSTEM.
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2. COMPUTERS
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Program name Package id Status Status date
MARIA-SYSTEM NEA-0926/04 Tested 28-JAN-1987
MARIA-SYSTEM NEA-0926/06 Tested 02-MAR-1993

Machines used:

Package ID Orig. computer Test computer
NEA-0926/04 CDC CYBER 835 CDC CYBER 74
NEA-0926/06 DEC VAX series DEC VAX 6000
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3. DESCRIPTION OF PROBLEM OR FUNCTION

The MARIA System is a code package for PWR fuel assembly calculations. It generates the cross sections library for the diffusion calculations with burnup and feedback effects (CARMEN -SYSTEM NEA 0649), and the k(infinite) and M**2 parameters for the nodal calculations (SIMULA NEA 0768).

   The MARIA-SYSTEM includes three modules:

(1) PREWIM generates the input data for the fuel assembly calculation module, for all fuel assembly types in the core and at any condition of power rate and temperature.

(2) WIMS-TRACA is a modified version of the fuel assembly calculation program WIMS-D/4 (NEA 0329). It generates the collapsed  cross sections versus burnup needed by the CARMEN code: reference cell, boron, xenon, samarium, and light water.

(3) POSWIM calculates the transport corrections to the diffusion constant of the absorber materials generated by WIMS-TRACA, to be used directly in the diffusion code when rods or burnable absorber rods are present.
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4. METHOD OF SOLUTION

PREWIM models the PWR assembly as a cluster of  rods, taking into account all the physical effects: Dancoff factor per fuel pin dependent on position, real fuel cells and absorber cells volume ratio, fuel pin spectrum in 69 groups independent of fuel assembly type, etc.
WIMS-TRACA performs the cluster calculation in two steps: first the theory of collision probabilites is used in 69 energy groups; then a Sn transport calculation is performed in few energy groups and with the detailed geometry. WIMS-TRACA provides the collapsed cross sections in two groups for every cluster region.
Special treatment is made in the condensation of the microscopic transport cross section for light water.
POSWIM corrects the diffusion constants for the absorber or control materials, fitting the leakages in the diffusion theory calculation to those of the transport calculation.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

PREWIM has some dimension restrictions, which may be changed. No particular restrictions are imposed on WIMS-TRACA and POSWIM.
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6. TYPICAL RUNNING TIME

Significant running times must be foreseen for WIMS-TRACA: About 40 CPU seconds are required per burnup step with the number of regions and groups foreseen in the MARIA-SYSTEM,  on UNIVAC-1100/80.
NEA-0926/04
NEA-DB executed the test case on CDC CYBER 740 in a total CPU time of 227 seconds.

NEA-0926/06
NEA-DB executed the test case included in this package  on a VAX 6000-510 in 2m47s of CPU time.
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7. UNUSUAL FEATURES OF THE PROGRAM

PREWIM reads external input data,  the other two modules read in an automatic way from the interface files generated by the previous module.
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8. RELATED AND AUXILIARY PROGRAMS

CARMEN can use the library data generated by MARIA-SYSTEM.
SIMULA uses the parameters generated by MARIA-SYSTEM.
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9. STATUS
Package ID Status date Status
NEA-0926/04 28-JAN-1987 Tested at NEADB
NEA-0926/06 02-MAR-1993 Tested at NEADB
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10. REFERENCES

- M.J. Halsall:
  A Summary of WIMS-D4 Input Options
  AEEW-M-1327 (1980).
- C. Ahnert, J.M. Aragones:
  CARMEN System, A Code Block for Neutronic PWR Calculation by
  Diffusion Theory with Space Dependent Feedback Effects
  JEN-515 (1982).
- J.M. Aragones, C. Ahnert, J.G. Santamaria, I.R. Olabarria:
  Developments and Validation of Core Physics Methods for In-Core
  Fuel Management of PWR's.
  Paper presented at the ANS Topical Meeting on Advances in Reactor
  Physics and Core Thermal-Hydraulics
  NUREG-CP-0034 (1982).
NEA-0926/04, included references:
- C. Ahnert and J.M. Aragones:
  "MARIA System - A Code Block for PWR Fuel Assembly Calculations"
  J.E.N. 543 (1983).
- E Sartori:
  Circular Letter to All Recipients of the MARIA-SYSTEM
  Package NEA 0926/04
  NEADB Note NDB/88/0757  (May 17, 1988).
NEA-0926/06, included references:
- C. Ahnert and J.M. Aragones:
  "MARIA System - A Code Block for PWR Fuel Assembly Calculations"
  J.E.N. 543 (1983).
- E Sartori:
  Circular Letter to All Recipients of the MARIA-SYSTEM
  Package NEA 0926/04
  NEADB Note NDB/88/0757  (May 17, 1988).
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11. MACHINE REQUIREMENTS:
NEA-0926/04
To run the test case included in this package on a CDC  CYBER 740 computer, 95K words of main storage are required, if the library is stored on the peripheral unit, and 187K words, if the library data are read from main storage.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0926/04 FORTRAN-77
NEA-0926/06 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:
EXEC-8 (UNIVAC 1100); NOS (CDC CYBER 740).
NEA-0926/06
VMS 5.4-2 (VAX 6000-510).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHOR

This code system has been included in the Coordinated Research Programme (CRP) on  "Codes Adaptable  to Small and  Medium-Size
Computers Available in Developing Countries for In-Core Fuel
Management" of the International Atomic Energy Agency.

J.M. Aragones
Universidad Politecnica de Madrid
Castellana, 80
MADRID, Spain

C. Ahnert
Junta de Energia Nuclear
Avda. Complutense
MADRID, Spain.
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16. MATERIAL AVAILABLE
NEA-0926/04
File name File description Records
NEA0926_04.001 Information file 72
NEA0926_04.002 MARIA JCL file 432
NEA0926_04.003 PREWIM source (FORTRAN-4) 2343
NEA0926_04.004 PREWIM input data 94
NEA0926_04.005 PREWIM printed output 498
NEA0926_04.006 PREWIM output on TAPE 13 95
NEA0926_04.007 PREWIM output on TAPE 14 203
NEA0926_04.008 PREWIM output on TAPE 15 324
NEA0926_04.009 PREWIM output on TAPE 16 73
NEA0926_04.010 PREWIM output on TAPE 17 233
NEA0926_04.011 WRITER source program 112
NEA0926_04.012 WIMS DATA LIBRARY (FORMATTED) 29833
NEA0926_04.013 WIMS-D/4-MARIA source segment 1 939
NEA0926_04.014 WIMS-D/4-MARIA source segment 2 2254
NEA0926_04.015 WIMS-D/4-MARIA source segment 3 2470
NEA0926_04.016 WIMS-D/4-MARIA source segment 4 1012
NEA0926_04.017 WIMS-D/4-MARIA source segment 5 1086
NEA0926_04.018 WIMS-D/4-MARIA source sefment 6 1281
NEA0926_04.019 WIMS-D/4-MARIA source segment 7 1000
NEA0926_04.020 WIMS-D/4-MARIA source segment 8 2398
NEA0926_04.021 WIMS-D/4-MARIA source segment 9 1650
NEA0926_04.022 WIMS-D/4-MARIA source segment 10 1751
NEA0926_04.023 WIMS-D/4-MARIA source segment 11 711
NEA0926_04.024 WIMS-D/4-MARIA source segment 12 821
NEA0926_04.025 WIMS-D/4-MARIA source segment 13 3486
NEA0926_04.026 WIMS-D/4-MARIA source segment 14 1800
NEA0926_04.027 WIMS-D/4-MARIA source segment 15 1818
NEA0926_04.028 WIMS-D/4 MARIA source segment 16 1402
NEA0926_04.029 WIMS-D/4-MARIA source segment 17 999
NEA0926_04.030 WIMS-D/4-MARIA segmentation 30
NEA0926_04.031 WIMS-D/4-MARIA input data 101
NEA0926_04.032 WIMS-D/4-MARIA printed output 3406
NEA0926_04.033 WIMS-D/4-MARIA output on TAPE 8 42
NEA0926_04.034 WIMS-D/4-MARIA output on TAPE 14 280
NEA0926_04.035 WIMS-D/4-MARIA output on TAPE 19 48
NEA0926_04.036 POSWIM source 436
NEA0926_04.037 POSWIM input data 2
NEA0926_04.038 POSWIM printed output 58
NEA0926_04.039 POSWIM output on TAPE 22 48
NEA0926_04.040 WIMS-D/4 input data for case 1 142
NEA0926_04.041 WIMS-D/4 input data for case 2 24
NEA0926_04.042 WIMS-D/4 input data for case 3 69
NEA0926_04.043 WIMS-D/4 input data for case 4 92
NEA0926_04.044 WIMS-D/4 input data for case 5 26
NEA0926_04.045 WIMS-D/4 input data for case 6 47
NEA0926_04.046 WIMS-D/4 input data for case 7 33
NEA0926_04.047 WIMS-D/4 input data for case 8 38
NEA0926_04.048 WIMS-D/4 input data for case 9 96
NEA0926_04.049 WIMS-D/4 input data for case 10 17
NEA0926_04.050 WIMS-D/4 input data for case 11 85
NEA0926_04.051 WIMS-D/4 printed output of case 1 9355
NEA0926_04.052 WIMS-D/4 printed output of case 2 1723
NEA0926_04.053 WIMS-D/4 printed output of case 3 3155
NEA0926_04.054 WIMS-D/4 printed output of case 4 4573
NEA0926_04.055 WIMS-D/4 printed output of case 5 7751
NEA0926_04.056 WIMS-D/4 printed output of case 6 2654
NEA0926_04.057 WIMS-D/4 printed output of case 7 1232
NEA0926_04.058 WIMS-D/4 printed output of case 8 14334
NEA0926_04.059 WIMS-D/4 printed output of case 9 2461
NEA0926_04.060 WIMS-D/4 printed output of case 10 1954
NEA0926_04.061 WIMS-D/4 printed output of case 11 2197
NEA0926_04.062 Dayfile of this job on CDC CYBER 708
NEA-0926/06
File name File description Records
NEA0926_06.001 Information file 109
NEA0926_06.002 Command file (compile link and run) 57
NEA0926_06.003 WRITER source file for WIMS-D/4 lib generat. 121
NEA0926_06.004 WRITER exe file 0
NEA0926_06.005 WIMS-D/4 library 0
NEA0926_06.006 Master Data Library 29833
NEA0926_06.007 Input sample case 1 141
NEA0926_06.008 Input sample case 2 23
NEA0926_06.009 Input sample case 3 68
NEA0926_06.010 Input sample case 4 91
NEA0926_06.011 Input sample case 5 24
NEA0926_06.012 Input sample case 6 46
NEA0926_06.013 Input sample case 7 32
NEA0926_06.014 Input sample case 8 37
NEA0926_06.015 Input sample case 9 95
NEA0926_06.016 Input sample case 10 16
NEA0926_06.017 Input sample case 11 84
NEA0926_06.018 SEG1 source file 1043
NEA0926_06.019 SEG2 source file 2267
NEA0926_06.020 SEG3 source file 2507
NEA0926_06.021 SEG4 source file 1020
NEA0926_06.022 SEG5 source file 1113
NEA0926_06.023 SEG6 source file 1288
NEA0926_06.024 SEG7 source file 1041
NEA0926_06.025 SEG8 source file 2403
NEA0926_06.026 SEG9 source file 1653
NEA0926_06.027 SEG10 source file 1751
NEA0926_06.028 SEG11 source file 716
NEA0926_06.029 SEG12 source file 827
NEA0926_06.030 SEG13 source file 3502
NEA0926_06.031 SEG14 source file 1827
NEA0926_06.032 SEG15 source file 1851
NEA0926_06.033 SEG16 source file 1404
NEA0926_06.034 SEG17 source file 999
NEA0926_06.035 Output sample case 1 9367
NEA0926_06.036 Output sample case 2 1383
NEA0926_06.037 Output sample case 3 3159
NEA0926_06.038 Output sample case 4 4580
NEA0926_06.039 Output sample case 5 7676
NEA0926_06.040 Output sample case 6 2658
NEA0926_06.041 Output sample case 7 1236
NEA0926_06.042 Output sample case 8 8330
NEA0926_06.043 Output sample case 9 2465
NEA0926_06.044 Output sample case 10 1958
NEA0926_06.045 Output sample case 11 2201
NEA0926_06.046 WIMSD4 exe file 0
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17. CATEGORIES
  • C. Static Design Studies

Keywords: burnup, cross sections, diffusion, fuel assemblies, fuel elements, pwr reactors.