ML17213A731
| ML17213A731 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 11/08/1982 |
| From: | Beard J Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17213A730 | List: |
| References | |
| NUDOCS 8211220048 | |
| Download: ML17213A731 (2) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION FLORIDA POWER AND LIGHT COMPANY ST.
LUCIE UNIT 1 SEISMIC UALIFICATION OF THE AUXILIARY FEEDWATER SYSTEM Introduction Since the accident at Three Nile Island, attention has been focused on the ability of pressurized water reactors to provide reliable decay heat removal capability.
While it is recognized that alternate methods may be. available to remove decay heat following transients or accidents, heat removal via the steam generators is the first choice for accomplishing a safe shutdown of the plant.
Therefore,'here should be reasonable assurance that the auxi liary feedwater system (AFWS) can withstand the postulated Safe Shutdown Earthquake (SSE), consistent with other safety-related systems in the plant.
Zo. address this concern, the NRC developed and initiated Multiplant Action
. C-14, "Seismic gualification of Auxiliary Feedwater Systems."
The objective of this plan is to increase, to the extent practicable, the capability. of those plants without seismically qualified AFWS to withstand earthquakes up to the SSE level.
This program was implemented with the issuance of NRC Generic Letter 81-14 dated February 10, 19S1.
Our review of the licensee's responses to this letter is the subject of this evaluation.
Evaluation The attached report was prepared for us by our consultant, Lawrence Livermore National Laboratory, as part of our technical assistance contract program.
The report provides their. technical evaluation of the licensee's conformance to the requi rements of Generic Letter 81-14.
We have reviewed the consultant's report and concur with its conclusions.
Conclusion Based upon our review of the consultant's technical evaluation report, we
.conclude that, upon completion of a post-TMI modification to the instrumentation/
control portion of the AFWS, there will be reasonable assurance that the auxiliary feedwater system has sufficient capability to withstand a safe shutdown earth-quake and accomplish its safety function.
Accordingly, we are not contemplating requiring any seismic upgrading of this system under the NRC Ilultiplant Action C-14 program.
We consider the consultant's technicalreport to be final, in that no further technical effort is required.
Principal Contributor:
J. T. Beard, ORAB
Attachment:
LLL Technical Evaluation Report 82ii220048 82ii08 PDR'ADQCK 05000335 P
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