ML17310B483
| ML17310B483 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 07/26/1994 |
| From: | ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-89-10, NUDOCS 9408040281 | |
| Download: ML17310B483 (6) | |
Text
(ACCELERATED RIDS PROCESSING)
REGULATORY INFORMATXON DISTRIBUTION SYSTEM (RIDS)
ACCESSXON NBR:9408040281 DOC.DATE: 94/07/26 NOTARIZED:
NO DOCKET FACIL:STN-50-'530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 AUTH.NAME AUTHOR AFFXLIATION Arizona Public Service Co.
(formerly Arizona Nuclear Power P
RECIP.NAME RECIPIENT AFFILXATION Document Control Branch (Document Control Desk)
R
SUBJECT:
Informs that GL 94-10 requires licensees to advise NRC in writing completion of GL re motor-operated valve testing
& surveillance.
DISTRIBUTION CODE:
A064D COPIES RECEIVED:LTR t
ENCL 9 SIZE:
TITLE: Response to Generic Ltr 89-10, "Safety-Related MOV Testing 6 Surveill NOTES:Standardized plant.
05000530 RECIPIENT ID CODE/NAME PDIV-3 PD INTERNAL: ACRS AEOD/DSP/TPAB NRR/DRIL/RPEB NRR/PD111-3 RES/DSIR EXTERNAL: NRC PDR COPIES LTTR ENCL RECIPIENT ID CODE/NAME TRAN,L AEOD/DSP/ROAB NRR/DE/EMEB DRPW/OGCB RE FI Ol 5/DS EIB/B NSIC COPIES LTTR ENCL D
C U
N NOTE TO ALL'BIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE! CONTACTTHE DOCUMENTCONTROL DESK, ROOM PI-37 (EXT. 504-2083 ) TO ELIMINATEYOUR NAMEFROM DISTRIBUTIONLISTS I'OR DOCUMENTS YOU DON'T NEEDt TOTAL NUMBER OF COPXES REQUIRED:
LTTR 14 ENCL ~ D
~E
Arizona Public Service Company P.O. BOX 53999
~
PHOENIX, ARIZONA85072<999 WILLIAML. STEWART EXECUTIVEVICEPRESIDENT NUCLEAR 102-03045-WLS/AKK/SAB July 26, 1994 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-37 Washington, DC 20555
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Unit 3 Docket No. STN 50-530 Completion of Generic Letter No. 89-10, Safety-Related Motor-Operated Valve Testing and Surveillance, Actions File: 94-010-026'4-180-419 Generic Letter (GL) No. 89-10 requires licensees to advise the NRC in writing when the actions delineated in the first paragraph of Item i. of the GL have been completed.
Arizona Public Service Company (APS) has completed these actions for Unit 3 at the PVNGS. The motor-operated valves (MOVs) within the scope of the program for Unit 3 have been evaluated and tested and are considered operable under all design basis conditions and normal operational events.
Although development and implementation of the MOV program have been completed, actions remain to be taken to address open program issues.
These actions include:
1)
Pressure Locking/Thermal Binding The evaluation of the potential for pressure locking and thermal binding of safety-related gate valves is still in progress.
It is understood that the NRC will be issuing a separate GL'on this issue in the immediate future.
2)
Periodic Verification Although periodic verification requirements have been incorporated in the MOV
- program, an evaluation of the need to perform periodic dynamic testing is ongoing.
This evaluation will be concluded following completion of the MOVtest program being performed by the Electric Power Research Institute (EPRI) and the GL 89-10 programs for PVNGS Units 1 and 2.
9408040281 940726 PDR ADODK 05000530 P
PDR P
I
e w
h
U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Completion of Generic Letter 89-10 Program Page 2 3)
Operability Margin for Two MOVs The available margin for AuxiliaryFeedwater Isolation Valves 3JAFCUV0036 and 3JAFAUV0037 is being reevaluated in order to better justifythe capability ofthese valves under design basis conditions.
The NRC conducted inspections of the APS MOV program on July 8-26,
- 1991, (50-528/529/530/91-25),
October 18-22,
- 1993, (50-528/529/530/93-32),
and April 4-8, and 20, 1994, (50-528/529/530/94-11).
During the most recent inspection the inspectors concluded that APS'OV program was generally capable of demonstrating the operability of MOVs subject to GL 89-10 and that the program was thorough and was being implemented in a manner consistent with APS'ommitments to the GL.
Should you have any questions, please contact Angela K. Krainik at (602) 393-5421.
Sincerely, WLS/AKK/SAB/rv Enclosure cc:
K. E. Perkins L. J. Callan K. E. Johnston B. E. Holian
r