1. NAME AND TITLE
SOFIRE-2: Containment Temperature and Pressure During Na Pool Fire, 1-Cell or 2 Cell Analysis.
Atomics International, Canoga Park, California, USA through the OECD Nuclear Energy Agency Data Bank, Issy-les-Moulineaux, France.
3. CODING LANGUAGE AND COMPUTER
FORTRAN IV; IBM 370 (P00570IO37000).
4. NATURE OF PROBLEM SOLVED
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.
5. 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).
6. RESTRICTIONS OR LIMITATIONS
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.
A dummy routine can be used for subroutine AICRT3, or the subroutine may be replaced to utilize local graphics capabilities.
7. 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.
8. COMPUTER HARDWARE REQUIREMENTS
134K bytes (ONE CELL program), 148K bytes (TWO CELL program).
9. COMPUTER SOFTWARE REQUIREMENTS
A FORTRAN compiler is required.
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).
11. CONTENTS OF CODE PACKAGE
The package is transmitted on a CD that includes the referenced document above, source code and sample problems.
12. DATE OF ABSTRACT
KEYWORDS: ACCIDENTS, CONTAINMENT, FIRES, REACTOR SAFETY, SODIUM