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[Program Service | Recent programs]

CCC-0485 BWR-LTAS. (Abstract last modified 30-APR-1987)


BWR-LTAS, BWR Long Term Accident Simulation Program

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Abstract Table of Contents:

NAME | COMPUTER | PROBLEM | SOLUTION | RESTRICTIONS | CPU | FEATURES | AUXILIARIES | STATUS | REFERENCES | REQUIREMENTS | LANGUAGE | OPERATING SYSTEM | OTHER RESTRICTIONS | AUTHOR | MATERIAL | CATEGORIES |

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1. NAME OR DESIGNATION OF PROGRAM - BWR-LTAS. 


2. COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -

To request or retrieve programs click on the one of the active versions below. A password and special authorization is required.

Explanation of the status codes.

Program-name         Package-ID  Status
BWR-LTAS             CCC-0485/01 Tested

Machines used:
Package-ID     Orig.Computer                       Test Computer
CCC-0485/01    IBM 3033                            IBM 3084

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.


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.


5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM - BWT-LTAS is presently usable only for Brown's Ferry.


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.


7. UNUSUAL FEATURES OF THE PROGRAM - 


8. RELATED AND AUXILIARY PROGRAMS - 


9. STATUS
CCC-0485/01: 30-APR-1987 Tested at NEADB


10. REFERENCES  - 
CCC-0485/01:
- 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)


11. MACHINE REQUIREMENTS - 

CCC-0485/01:

 The test case ran on an IBM 3084 computer in 1208K bytes of main storage. 


12. PROGRAMMING LANGUAGE(S) USED -
CCC-0485/01: FORTRAN-77 


13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED - 


14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS - 


15. NAME AND ESTABLISHMENT OF AUTHORS - 
          Oak Ridge  National Laboratory 
          Oak Ridge, Tennessee 


16. MATERIAL AVAILABLE -
CCC-0485/01:
CCC0485_01.001    BWR-LTAS Information file                          69 records
CCC0485_01.002    BWR-LTAS Fortran source.                        10620 records
CCC0485_01.003    BWR-LTAS JCL file      .                           12 records
CCC0485_01.004    BWR-LTAS Sample problem input data                 52 records
CCC0485_01.005    BWR-LTAS Sample problem printed output           2098 records


17. CATEGORIES  - 

- G.  Radiological Safety, Hazard and Accident Analysis


Keywords: SIMULATION

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