ML20209A830
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/ 'o UNITED STATES 8
g th, NUCLEAR REGULATORY COMMISSION
.t WASHINGTON, D. C. 20555
. G e k y , , , 8, July 31, 1980 1
MEMORANDUM FOR: S. Fabic, Chief, Analysis Development Branch, RSR FROM: K. Kniel, Chief, Generic Issues Branch, DST
SUBJECT:
LIAISON WITH JAERI AND GKSS During the containment review group meeting held in Bethesda, Maryland on July 18, 1980 between members of RSR and NRR staffs, you requested that NRR state its needs related to the Lawrence Livermore National Laboratory (LLNL) liaison program with JAERI and GKSS. It is our view that this liaison pro-gram should continue at its current level of effort through the end of FY 81.
A significant reduction in the level of effort for the FY 82 liaison is an-ticipated considering the termination of the JAERI/GKSS programs in 1982.
The following provides some background information related to our needs. Pre-liminary observations of test data from the first series of JAERI containment response tests led the staff to conclude that the results of these tests should be factored into the Mark II Long Term Program (LTP). As a result, the Mark II oi:ners established a working relationship with JAERI and the Japanese
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utilities to evaluate the JAERI test results. Discussions were conducted with personnel from JAERI and several of the !:RC consultants and representatives of the Mark II owners group at the JAERI facilities in Japan. The most signifi-cant outcome of that meeting was that JAERI will make available to the staff a copy of the evaluation of the test data that was requested by the Mark II owners group.
The staff further expressed its opinion that the Mark II owners should follow the JAERI test extending beyond the completion of the current Mark II LTP (Schedule for completion - January 1981) and notify the staff in the event of any significant non-conservative deviations from the LTP criteria.
The NRR staff, therefore, will conduct a review of the JAERI data that was re-quested by the Mark II owners group when it becomes available in September 1980. Following the completion of the LTP, the staff will monitor the JAERI data to assure ourselves that the Mark II owners load specifications are con-servative. This effort will be conducted by our consultants at BNL.
With regard to the GKSS data, it is the staff's opinion that these data will enable us to understand some pool dynamic phenomena, such as condensation os-cillation and chugging; however, due to the deviation of key geometric param-eters from Mark II plant prototypical values, our effort will be less than for JAERI data.
The current LLNL program includes a liaison effort and a limited evaluation of the foreign test data. LLNL has proposed an expansion of the program for FY 81
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Contact:
C. Anderson, GIB:DSI J9424 f -7, f (/)
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( S. Fabic July 31, 1980 to include extensive fluid structure interaction (FSI) evaluation of the tests at the JAERI facility. NRR does not support this program expansion.
The Mark II owners at the request of NRR have initiated the necessary FSI studies of the JAERI tests. It is our view that the proposed LLNL FSI studies would be very costly and could not be performed on a schedule com-mensurate with our licensing schedule. Most likely, a quality FSI study of the JAERI tests by LLNL would take years.
In summary, the JAERI and GKSS test programs play an important role in the resolution of the staff A-8 Mark II generic program. It is important that we maintain an open channel to obtain the results of these foreign tests in a timely manner. The LLNL liaison program helps to provide this open chan-nel and should be maintained. However, we do not see a need for an expan-sion of the LLNL program to include FSI studies o the ERI t s.
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Karl Kniel, Chief Generic Issues Branch Division of Safety Technology cc: R. Mattson D. Ross F. Schroeder L. Rubenstein W. Butler P. Norian J. Kudrick T. Lee F. Eltawila C. Anderson i