ML19290C386
| ML19290C386 | |
| Person / Time | |
|---|---|
| Issue date: | 06/21/1979 |
| From: | Zwolinski J Office of Nuclear Reactor Regulation |
| To: | Angelo J Office of Nuclear Reactor Regulation |
| References | |
| REF-GTECI-A-17, REF-GTECI-SY, TASK-A-17, TASK-OR NUDOCS 8001110109 | |
| Download: ML19290C386 (1) | |
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JUN 211979 MEMORANDUM FOR: John Angelo, Task Manaaer, A-17, Systems Interaction THRU:
Walter R. Butler, Ch;ef, Containment Systems Branch, DSS FROM:
John A. Zwolinski, Containment Systems Branch, DSS
SUBJECT:
TASK ACTION PLAN A-17, REVIEW EG&G REPORT TREE-1289, COMCAN II A COMPUTER PROGRAM FOR COMMON CAUSE FAILURE ANALYSIS Per your request, I have reviewed the subject report. The authors have presented a basic user's manual for a computer program, COMCAN II, used to identify possible common causrb for the failure of fault tree minimum cut sets. The work presents a cumputer code, which, with proper input, has the capability of identifying minimal cut sets (a group of conditions, parameters or like circumstances necessary to result in an unde:, ired event) which exhibit the potential for comon cause failure.
The report has addressed a laroe variety of possible common causes.
It is the best work on the subject of Systems Interaction that I have reviewed to date.
Overall, the work appears to offer excellent potential for usage in Task Action Plan A-17, Systems Interaction. Specifically, I believe we could, almost immediately, take a portion of the work Sandla Laboratories has completed; for example, Decay Heat Removal and the associated Auxiliary Feedwater System and use the methodology in COMCAN II to do a complete fault tree representation for the AFS. This would appear to be highly beneficial to the program objectives as we could then demonstrate the level of work required to review one specific system.
I would further recommend the subject report be made available o all participants in TAP A-17.
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Joh A. Zwolinski Containment Systems Branch Division of Systems Safety cc:
S. Hanauer M. Aycock D. Fischer M. Srinivasan j J } ') 28}
H. George T. Scarbrough M. Chiramal L. Soffer 8001110loy