ML19290C399
| ML19290C399 | |
| Person / Time | |
|---|---|
| Issue date: | 03/14/1978 |
| From: | Angelo J Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| REF-GTECI-A-17, REF-GTECI-SY, TASK-A-17, TASK-OR NUDOCS 8001110223 | |
| Download: ML19290C399 (4) | |
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MAR 141978 PROJECT:
Systems Interaction Task A-17 FACILITY: Sandia Laboratories, Albuquerque, NM
SUBJECT:
SUMMARY
OF TRIP TO SANDIA LABORATORIES TO DISCUSS PROPOSAL FOR CONTRACT ASSISTANCE On March 1 and 2,1978, the Task Manager (J. Angelo) for Task A-17 and the Project Manager (J. Norberg, OSD) met with representatives of Sandia Laboratories to discuss a proposal for contract assistance on Task A-17.
We met with D. McCloskey, J. W. Hickman, M, Rios, G. B. Varnado, W. R.
Cramond, D D. Carlson, and S. V. Asselin of Sandia Laboratories.
Based on our discussions, J. W. Hickman will revise the draft proposal dated 1/16/78 to provide a clear definition of the program plan, including objectives of the plan. A Form 189 " Additional Justification for Operating Costs" will also be prepared by Sandia Laboratories for our further considera-tion. We intend to meet again with representatives of Sandia Laboratories on or about April 4,1978 to make a final review of the proposal with the objective of starting work on the task on or about May 1, 1978 ff a contract is consunTnated.
During these discussions the representatives of Sandia Laboratories presented a summary of several work efforts currently underway at Sandia for the NRC to illustrate the Laboratories' capabilities in areas related to nuclear reactor safety, The discussions were also directed toward illustrating how similar analytical and investigative techniques could be used for the task on systems interaction.
It is anticipated that the principal elements of the methodology for performing systems interaction study will be based on the following sequential parts:
(1) define safety functions that must be performed under various plant accident and operational conditions to ensure removal of core decay heat, (2) identify the systems, including sup-portive systems, that are needed to perfonn the safety functions, (3) identify potential interactions among these systems that have safety significance, (4) demonstrate the methodology on a selected nuclear power plant, and (5) measure the Standard Review Plan against the results of the systems interaction study, 1732 302 800111027_3
MAR 141978 2-We indicated to the representatives of Sandia Laboratories that we wanted the first effort expended on the safety functions associated with the removal of core decay heat. Then, depending on the results of that effort, we would consider the safety functions associated with the potential release of radioactivity from the nuclear fuel storage facilities and from radioactive waste treatment systems.
We also discussed the need for early resolution of the identification of criteria that will be used to bound the systems interactions that are to be considered. We believe that the general methodology described above which will identify systems required to perform safety functions will effectively serve to bound the systems that are to be considered in systems interactions.
We discussed whether common mode failures should be accounteo Ior in systems interaction where the comon mode is external to the plant systems or plant physical arrangement, e.g., failures that can be the result of comon design, comon maintenance, or common operational actions. We concluded that the plant systems generic logic models should be structured to accept such common mode failures.
We discussed the need to select an exemplary nuclear power plant for the purpose of developing a generic logic model as well as for the purpose of testing the logic model. We informed the representatives of Sandia Laboratories that we would discuss this item within NRC and inform them of any actions that we may desire in this regard.
We discussed the method of reporting progress on this task and concluded that a monthly letter report to management should be made. Technical results should be reported at the completion of specific tasks.
It is expected that four technical reports will be submitted for the first phase of the task. These reports will be submitted at approximately three months, six months,10 months, and 12 months after the start of the first phase of the task.
1732.503
P MAR 14 y We discussed access to our data bank of Licensee Event Reports and access to any other infonnation that Sandia Laboratories may need for this task. We invited the representatives of Sandia Laboratories to visit our facilities and meet with our personnel who are responsible for the data storage and retrieval.
Y w
J. Angelo, Pr ect Manager Light Water Reactors Branch No. 1 Division of Project Management cc:
See next page 1732 304
MAR 141979 cc:
J. Olshinski H. Schierling G. Chipman W. Burk:
H. Balukjian D. Thatcher C. Liang W. Milstead J. Norberg L. Lois M. Chiramal J. Norberg (10)
J. Angelo J. Stolz R. DeYoung 1732 305
.