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NESC0559 SOFIRE-2

SOFIRE-2, Containment Temperature and Pressure During Na Pool Fire, 1-Cell or 2-Cell Analysis

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1. NAME OR DESIGNATION OF PROGRAM:  SOFIRE2 1- and 2-CELL
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2. COMPUTERS
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Program name Package id Status Status date
SOFIRE-2 NESC0559/01 Tested 01-AUG-1974

Machines used:

Package ID Orig. computer Test computer
NESC0559/01 IBM 370 series IBM 370 series
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3. DESCRIPTION OF PROBLEM OR FUNCTION

SOFIRE2 ONE  CELL, calculates
the consequences  of a sodium  pool fire  in a closed  vault.  Gas
pressure  in the  vault is  calculated  from the  gas density  and
temperature.  SOFIRE2 TWO  CELL, calculates the consequences  of a
sodium pool fire  in a vault connected to  a containment structure
through a restricted opening.  Cold gas flows from the containment
to the vault due to mass differences  while hot gas flows from the
vault to  the containment to  equilibrate pressures.   Pressure in
the  containment   is  calculated   from  the   gas  density   and
temperature.  In both programs the sodium burning rate is governed
by the rate of oxygen diffusion to the sodium surface.
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4. METHOD OF SOLUTION

Both  programs  use   the  finite  difference
method  to calculate  transient temperatures  in  a nodal  network
designed to simulate  a physical system (ONE CELL  program) or the
two cell geometry (TWO CELL program).
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The    ONE    CELL
program has a  total of 12 nodes available  for system components,
while the TWO CELL program has a total of 16 nodes.
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6. TYPICAL RUNNING TIME

The ONE CELL program  requires 1 minute for
a 12 hour  real time problem, while the TWO  CELL program requires
12 seconds for a 24 hour real time problem.
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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
NESC0559/01 01-AUG-1974 Tested at NEADB
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10. REFERENCE

P.  Beiriger,  J.  Hopenfeld,  M.  Silberberg,  R.  P.
Johnson, L. Baurmash, and R. L. Koontz, SOFIRE II User Report, AI-
AEC-13055, March 30, 1973.
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11. MACHINE REQUIREMENTS

134K bytes  (ONE CELL program),  148K bytes
(TWO CELL program)
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC0559/01 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:   OS/360.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

     A
dummy routine can be used for subroutine AICRT3, or the subroutine
may be replaced to utilize local graphics capabilities.
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15. NAME AND ESTABLISHMENT OF AUTHOR

                 Melvin Silberberg
                 Atomics International
                 P. O. Box 309
                 Canoga Park, California  91304
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16. MATERIAL AVAILABLE
NESC0559/01
File name File description Records
NESC0559_01.001 ONE-CELL CODE SOURCE PROGRAM (FORTRAN) 490
NESC0559_01.002 ONE-CELL CODE SAMPLE PROBLEM 37
NESC0559_01.003 TWO-CELL CODE SOURCE PROGRAM (FORTRAN) 571
NESC0559_01.004 TWO-CELL CODE SAMPLE PROBLEM 49
NESC0559_01.005 ONE-CELL CODE OUTPUT LIST OF SAMPLE PROB. 5325
NESC0559_01.006 TWO-CELL CODE OUTPUT LIST OF SAMPLE PROB. 2205
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis

Keywords: accidents, containment, fires, reactor safety, sodium.