L-82-277, Responds to 820701 Request for Info Re Pressurizer Safety Valves & Power Operated Relief Valves Per NUREG-0737 Item II.D.1.C-E Owners Group EPRI Test Program in Progress.Final Rept Will Be Provided by 821230
| ML17212B722 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 07/09/1982 |
| From: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.D.1, TASK-TM GL-81-36, L-82-277, NUDOCS 8207160182 | |
| Download: ML17212B722 (6) | |
Text
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'AUTH,'.NAME" AUTHOR AFFILIATXOtl
-UHRIGiH;6,
'Florida (Power 8 Light iCo,
>RBCIP ~ NAME RECIPIENT AFFIL'IA'TION EI'SENHUTiDtG,
'Division of Licensin'g
SUBJECT:
Responds,,to 820701 request for nfo re pressurizer
<<safety valves L <<powei operated ~relief valves ~per NURG~0737 Item I4Dtii'C~E owner s 'group iEPRI test, program in progr ess>Final
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FLORIDA POWER & LIGHT COMPANY July 9, 1982 L-82-277 Office of Nuclear Reactor Regulation Attention:
Mr. Darrell G. Eisenhut, Director Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C.
20555
Dear Mr. Eisenhut:
Re:
St. Lucie Unit 1 Docket No. 50-335 Post-TMX Requirements NUREG-0737 XTEM XX.D.1 PWR Relief and Safet Valve Testin The purpose of this letter is to provide the Florida Power and Light response to the July 1, 1982, NRC request for a submittal that addresses the function-ability of the pressurizer safety valves and power operated relief valves (PORVs) that are installed in the St. Lucie Unit 51 system.
Xtem II.D.1.A of NUREG-0737 required that utilities operating and/or constructing Pressurized Water Reactor (PWR) power plants provide evidence, supported by test, of.
safety and relief valve functionability.
In response to these requirements, the Electric Power Research Institute (EPRI) implemented a generic test program on behalf of the PWR utilities.
Florida Power and Light has been a participant in the EPRI program.
The NRC Generic letter 81-36 dated September 19, 1981, contains a schedule for the submittal of test results and the submittal of plant-specific reports.
In accordance with this
- schedule, results of the EPRI program, summarized in various EPRI reports, were forwarded to the NRC on April 1, 1982, in parallel with distribution to the participating utilities.
Florida Power and Light Company referenced this submittal as applicable to St. Lucie Unit 1-in our letter L-82-126 also dated April 1, 1982.
In order to facilitate an expeditious evaluation of the test data, the utilities operating and constructing Combustion Engineering (C-E) designed plants have, through the C-E Owners Group, requested that C-E implement a
program to evaluate and apply the EPRI test results.
The C-E Owners Group program was subsequently initiated in April, 1982, and is currently in progress.
Florida Power and Light is a participant in this program.
The approach being applied by the C-E Owners Group is to show that particular EPRI tests were directly representative of plant-specific safety and relief valve models and valve installations, and that acceptable valve operation was demonstrated.
The portion of the program related to PORV's has already po 8207i6()18~()g()00$ >5 p ego"/()9 pOR ADOCK pDR P
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been completed.
Accordingly, C-E report CEN-213, entitled "Summary Report on the Operability of Power Operated Relief Valves in C-E Designed Plants,"
is being forwarded separately to the NRC by Mr. Kenneth P. Baskin, Chairman of the C-E Owners-Group.
Florida Power and Light considers report CEN-213 to provide the required information on PORV operability for St. Lucie Unit 51.
With regard to the evaluation of safety valves, our review of the EPRI tests has determined that the valve and installations used in St. Lucie Unit Sl were represented in the EPRI program and the test conditions enveloped the range of fluid conditions recommended by NUREG-0737.
The valve discharge for St. Lucie Unit Sl is limited to steam conditions, and the valves are installed on short inlet pipes extending from the pressurizer.
This type of arrangement and the steam condition has been shown in the EPRI program to be the most optimum for the valves to perform their function.
Although there is no safety concern, future valve adjustments may be benefi-cial to assure optimal performance.
Currently, detailed plant-specific evaluation and application of the EPRI data is being performed as part of the Owners Group progress.
In addition, input from the valve manufacturers is being requested.
That information is expected to be received during the third quarter of 1982, and will then be incorporated into the C-E evaluation.
If valve adjustments are necessary, they will be identified in the C-E evaluation based on performance demonstrated by the EPRI tests.
The results will be, presented in a C-E Owners Group report that is scheduled for completion in December, 1982.
Since Florida Power and Light is a parti-cipant in the program, the operability of safety valves in the St. Lucie Unit Sl system will be addressed by this report.
Currently, our intent is to provide you with the final report, which will serve as our,'final submittal, by December 30, 1982.
This date is six weeks later that the November 15, 1982 completion date we provided you in our April 1, 1982 letter.
. Very truly yours, R
t E. Uhrig Vice President Advanced Systems a Technology REU/PKG/JDR/mbd cc:
J.P. O'Reilly, Region II Harold F. Reis, Esquire
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