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IAEA1216 PRORIA.

PRORIA, Fast Reactivity Transients in PWR with Two-Phase Flow Model

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1. NAME OR DESIGNATION OF PROGRAM:  PRORIA.
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2. COMPUTERS
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Program name Package id Status Status date
PRORIA IAEA1216/01 Tested 30-JUL-1991

Machines used:

Package ID Orig. computer Test computer
IAEA1216/01 IBM PC PC-80386
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3. DESCRIPTION OF PROGRAM OR FUNCTION

PRORIA is a computer code for analyses of fast reactivity-initiated accidents in PWR - type reactors. The mathematical model is based on the two-dimensional, two-group, space-time diffusion equations with temperature feedback. The fluid dynamics is described by an inhomogeneous, nonequilibrium, two-phase flow model.
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4. METHOD OF SOLUTION

The code solves the neutron kinetic equations by finite difference approximations. The heat conduction model in the code uses an analytical approach to obtain the average temperatures of the fuel, gap and clad. The numerical algorithms used for solving the fluid dynamics equations are based on a conventional finite- difference approximation in space and time.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Basic limitations are:
- (R-Z) geometry and the diffusion approximation of the neutron     kinetics,
- the one-dimensional solution, the absence of a bypass channel  and the inability to calculate flow reversal of the     thermalhydraulics model,
  - 30 and 20 mesh points along radial (R) and axial (Z) direction.
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6. TYPICAL RUNNING TIME

For 0.5 sec. transient, about 140 min. are necessary for CPU.
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7. UNUSUAL FEATURES OF THE PROGRAM

The code enables the user to analyse severe accidents which lead to boiling regime (two-phase flow).
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8. RELATED AND AUXILIARY PROGRAMS

The PRORIA - code supersedes the RETRANS code which is based on the one phase-flow model.
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9. STATUS
Package ID Status date Status
IAEA1216/01 30-JUL-1991 Tested at NEADB
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10. REFERENCES

- G. Kamelander:
  RETRANS - A Program for Calculating Reactivity Transients
  CPC 00507, North Holland Physics Publishing Division (May 1985).
- D.J. Diamond:
  BEAGL-01 - A Computer Code for Calculating Rapid LWR Core
  Transients
  EPRI NP-3243-ccm (October 1984).
IAEA1216/01, included references:
- J. Kubowski, J. Krystosik and Z. Niewiarowski:
  PRORIA - A Computer Code for Analyses of Fast Reactivity Initiated
  Accidents in PWR Reactors
  15452 - d (July 1990).
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11. MACHINE REQUIREMENTS:  133866 bytes on IBM PC/AT with co-processor DSI-32/4.
IAEA1216/01
The test cases included in this package have been executed by NEA-DB on a PC/80386 desktop computer with a 80387 math  coprocessor.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
IAEA1216/01 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  PC DOS 3.10, MC 68020 loader version 9.11-P.
IAEA1216/01
MSDOS/4.01 with Microsoft FORTRAN 5.0 compiler.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:  Number
of lines in combined program: 2395.
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15. NAME AND ESTABLISHMENT OF AUTHORS

          J. Kuboswki, J. Krystosik, Z. Niewiarowski
          Institute of Power
          Zaklad NJR
          Ul. Mory 8
          01-330 Warszawa, Poland
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16. MATERIAL AVAILABLE
IAEA1216/01
File name File description Records
IAEA1216_01.001 Information file 71
IAEA1216_01.002 Batch file to compile and link 4
IAEA1216_01.003 Sample input file 124
IAEA1216_01.004 Main source file 906
IAEA1216_01.005 PRORIA source file 470
IAEA1216_01.006 PRORIA1 source file 1029
IAEA1216_01.007 Executable file 0
IAEA1216_01.008 Sample output file 10635
IAEA1216_01.009 DOS file-names 7
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17. CATEGORIES
  • F. Space - Time Kinetics, Coupled Neutronics - Hydrodynamics - Thermodynamics

Keywords: finite difference method, reactivity, reactor dynamics, reactor kinetics, transients, two-phase flow.