last modified: 30-APR-1987 | catalog | categories | new | search |

CCC-0485 BWR-LTAS.

BWR-LTAS, BWR Long Term Accident Simulation Program

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1. NAME OR DESIGNATION OF PROGRAM:  BWR-LTAS.
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2. COMPUTERS
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Program name Package id Status Status date
BWR-LTAS CCC-0485/01 Tested 30-APR-1987

Machines used:

Package ID Orig. computer Test computer
CCC-0485/01 IBM 3033 IBM 3084
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3. DESCRIPTION OF PROGRAM OR FUNCTION

BWT-LTAS performs studies of specific accident sequences at Brown's Ferry Unit One: station blackout, small break LOCA primary injection, loss of decay heat removal, loss of vessel water injection, and anticipated transient without scram.
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4. METHOD OF SOLUTION

BWT-LTAS estimates the effects of operator actions on the timing and course of events during the part of the sequence leading up to, but not including, fuel damage. It documents the basis of the methods used to simulate the response of parameters in reactor vessel, primary coolant system, primary containment and other reactor systems.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:  BWT-LTAS is presently usable only for Brown's Ferry.
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6. TYPICAL RUNNING TIME:  On the IBM 3033, the sample ran in 3 minutes.
CCC-0485/01
NEA-DB ran the test case included in this package on an IBM 3084 computer in 1 minute 47.5 seconds of CPU time.
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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
CCC-0485/01 30-APR-1987 Tested at NEADB
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10. REFERENCES:
CCC-0485/01, included references:
- R.M. Harrington and L.C. Fuller:
  BWR-LTAS: A Boiling Water Reactor Long-Term Accident
  Simulation Code
  ORNL/TM-9163, NUREG/CR-3764 (February 1985)
- R.M. Harrington:
  Modifications to BWR-LTAS since December 1984
  Informal Notes  (June 1985)
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11. MACHINE REQUIREMENTS:
CCC-0485/01
The test case ran on an IBM 3084 computer in 1208K bytes of main storage.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
CCC-0485/01 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHORS

          Oak Ridge  National Laboratory
          Oak Ridge, Tennessee
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16. MATERIAL AVAILABLE
CCC-0485/01
File name File description Records
CCC0485_01.001 BWR-LTAS Information file 69
CCC0485_01.002 BWR-LTAS Fortran source. 10620
CCC0485_01.003 BWR-LTAS JCL file . 12
CCC0485_01.004 BWR-LTAS Sample problem input data 52
CCC0485_01.005 BWR-LTAS Sample problem printed output 2098
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis

Keywords: simulation.