Computer Programs
NESC0559 SOFIRE-2
last modified: 01-AUG-1974 | catalog | categories | new | search |

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

SOFIRE-2

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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 PROGRAM OR FUNCTION

SOFIRE-2 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. SOFIRE-2 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. METHODS

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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9. STATUS
Package ID Status date Status
NESC0559/01 01-AUG-1974 Tested at NEADB
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10. REFERENCES
NESC0559/01, included references:
- P. Beiriger et al.:
SOFIRE II User Report, AI-AEC-13055, March 30, 1973.
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11. HARDWARE 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. SOFTWARE REQUIREMENTS

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 AUTHORS

Melvin Silberberg

Atomics International

P. O. Box 309

Canoga Park, CA 91304, USA

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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.