Computer Programs
NEA-0261 EQUSTA.
last modified: 01-AUG-1969 | catalog | categories | new | search |

NEA-0261 EQUSTA.

EQUSTA, Thermodynamics Analysis and Mechanical Analysis for Fast Reactor Accident

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1. NAME OR DESIGNATION OF PROGRAM:  EQUSTA.
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2. COMPUTERS
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Program name Package id Status Status date
EQUSTA NEA-0261/01 Tested 01-AUG-1969

Machines used:

Package ID Orig. computer Test computer
NEA-0261/01 IBM 360 series IBM 360 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

For the analysis of destructive nuclear excursions in fast reactors, the equation of state (P, T, rho, E relation) and the mechanical work due to isentropic expansion are calculated for any material from some well-known generalized thermodynamic tables, using the principle of corresponding states.
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4. METHOD OF SOLUTION

The thermodynamic tables are composed into a data library and the programmme computes the required relationships  by linear interpolation procedures constrained only by one of the conditions, temperature=const, density=const. or entropy=const.
The first option yields the (p,v) isotherms; the second option yields p as a function of t and e at constant volume; the third option yields the (p,t,e) adiabats and mechanical work.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The reduced pressure  and temperature and the critical compressibility factor cannot be allowed far beyond the ranges covered by the data,
ie., 0.01 < pr < 30
     0.5  < tr < 15
     0.24 < zc < 0.3
Only small extrapolations outside these limits are permissible.
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6. TYPICAL RUNNING TIME:  1 minute.
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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM
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8. RELATED OR AUXILIARY PROGRAMS: RELATED AND AUXILIARY PROGRAMS
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9. STATUS
Package ID Status date Status
NEA-0261/01 01-AUG-1969 Tested at NEADB
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10. REFERENCES

REFERENCES.
- J. Randles:
  Prediction of the Equations of State of Reactor Materials for
  Destructive Excursion Analysis
  EUR 4139E (1969).
- R.J. Jaarsma and J. Randles:
  EQUSTA, A FORTRAN 4 Computer Programme for the Prediction of
  Equations of State Using the Principle of Corresponding States
  EUR-4147E (1969).
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11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0261/01 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  HASP. OS 360.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHOR

R.J. Jaarsma and J. Randles
                                   EURATOM
                                   Joint Nuclear Research Centre
                                   21020 - Ispra (Varese)
                                   Italy
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16. MATERIAL AVAILABLE
NEA-0261/01
File name File description Records
NEA0261_01.001 SOURCE & DATA 360/65 1844
NEA0261_01.002 OUTPUT 2083
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17. CATEGORIES
  • H. Heat Transfer and Fluid Flow

Keywords: accidents, excursions, fast reactors, isentropic processes, reactor safety, thermodynamics.