ML17306A838
| ML17306A838 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 07/10/1992 |
| From: | Conway W ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 102-02201-WFC-J, 102-2201-WFC-J, NUDOCS 9207210326 | |
| Download: ML17306A838 (12) | |
Text
ACCELERATED DISTRIBUTION DEMONST$&TION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:9207210326 DOC.DATE: 92/07/10 NOTARIZED NO DOCKET FACIL:STN-50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi
'05000528 8'PN-50-529 Palo Verde Nuclear Station, Unit 2, Arizona Publi 05000529 STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 UTH.NAME AUTHOR AFFILIATION CONWAY,W.F.
Arizona Public Service Co. (formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Doc'ument Control Desk)
SUBJECT:
Forwards addi info related to notice of violation previously responded to on 911024 re insp repts 50-528/91-25, 50-529/91-25 6[ 50-530/91-25.
DISTRIBUTION CODE:
IE01D.COPIES RECEIVED:LTR ENCL SIZE:
TITLE: General (50 Dkt)-Insp Rept/Notice of Violation Response D
NOTES:STANDARDIZED PLANT Standardized plant.
Standardized plant.
RECIPIENT ID CODE/NAME PD5 PD THOMPSON,M RNAL: ACRS AEOD/DEIIB DEDRO NRR/DLPQ/LHFBPT NRR/DOEA/OEAB NRR/DST/DIR 8E2 NUDOCS-ABSTRACT OGC/HDS1 RGN5 FILE 01 EXTERNAL: EG&G/BRYCEiJ.H.
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1 RECIPIENT ID CODE/NAME TRAMMELL,C AEOD AEOD/DSP/TPAB NRR MORISSEAUiD NRR/DLPQ/LPEB10 NRR/DREP/PEPB9H NRR/PMAS/ILRB12 O~R REG FIL
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NOTE TO ALL"RIDS" RECIPIENTS:
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PLEASE HELP US TO REDUCE WAS CONTACT THE DOCUMENT CONTROL DESK, ROOM P 1-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!
TOTAL NUMBER OF COPIES REQUIRED:
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0 WILLIAMF. CONWAY EXECUTIVEVICEPRESIDENT NUCLEAR Arizona Public Service Company P.O. BOX 53999
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PHOENIX. ARIZONA85072-3999 102-02201-WF C/J RB July 10, 1992 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-37 Washington, DC 20555
References:
1
~
2.
Letter from D. F. Kirsch, Chief, Reactor Safety
- Branch, NRC, to W.'F. Conway, Executive
. Vice President,
- Nuclear, APS, dated September 20, 1991.
Letter from W. F. Conway, Executive Vice President, Nuclear, APS, to U. S. Nuclear Regulatory Commission, dated October 24, 1991.
3.
Letter from D. F. Kirsch, Chief, Reactor Safety
- Branch, NRC, to W. F. Conway, Executive Vice President,
- Nuclear, APS, dated February 28, 1992.
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Units 1, 2, and 3 Docket Nos. STN 50-528/529/530 Additional Information Related to Notice of Violation 50-528/91-25-02 File: 92-070-026 Arizona Public Service Company (APS) provided a response to the subject Notice of Violation (Reference
- 1) in a letter dated October 24, 1991 (Reference 2). Subsequent to this response, telephone conversations were held between members of your staff and APS to clarify APS'ntended corrective actions.
These conversations were referred to in NRC's response, dated February 28, 1992 (Reference 3), to APS'eply to Notice of Violation. Based on these conversations, additional information concerning acceptance criteria for motor-operated valve dynamic testing is being provided in the enclosure.
9207210326 920710 PDR ADOCK 05000528
'8 PDR r;
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102-02201-WFC/JRB July 10, 1992 U.'S. Nuclear Regulatory Commission ATTN: Document Control Desk Additional Information Related to Notice of Violation 50-528/91-25-02 Page 2 Should you have any questions regarding this additional information, please contact Thomas R. Bradish of my staff at (602) 393-5421.
Sincerely, WFC/TRB/JRB/dmn
Enclosure:
Additional Information Concerning Acceptance Criteria for Motor-Operated Valve Dynamic Testing cc:
J. B. Martin D. H. Coe
ENCLOSURE
= ADDITIONALINFORMATIONCONCERNING ACCEPTANCE CRITERIA FOR MOTOR-OPERATED VALVEDYNAMICTESTING INSPECTION REPORT NOS. 50-528) 529, 530/91-25 (NOTICE OF VIOLATION50-528/91-.25-02)
ADDITIONALINFORMATIONCONCERNING ACCEPTANCE CRITERIA FOR MOTOR-OPERATED VALVEDYNAMICTESTING ln a letter dated September 20, 1991, NRC issued Arizona Public Service Company (APS) a Level IV violation for failure to include acceptance criteria in 73TI-9ZZ43, "MOVATS Testing for Safety Injection System (HPSI)," for testing safety-related, motor-operated valves (MOVs) under design basis conditions.
APS responded to this Notice-of Violation in a letter dated October 24, 1991.
As stated in this response, APS recognizes the need'for specific MOV dynamic testing acceptance criteria; however, development of specific acceptance criteria is an evolutionary process and evaluation of data being gathered by this test instruction is part of this evolution. APS committed, in this response, to incorporate verification of stroke time, if applicable, and verification of e
completion of stroke, if required, as acceptance criteria into'OVATS test instructions.
N This acceptance criteria has been incorporated into the appropriate test instructions. APS further committed, in this response, to incorporate additional acceptance criteria into MOVATS test instructions, as data gathering techniques were validated and more collected data was evaluated.
Incorporation of this additional acceptance criteria was expected to be ongoing throughout implementation of APS'eneric Letter 89-10 program.
Based on APS'ynamic testing of MOVs to date, certain additional acceptance criteria can now be developed and applied to dynamic testing of MOVs to ensure the MOVs will function under design basis conditions.
This acceptance criteria is expected to include minimum opening and closing force calculation validation, maximum developed Page 1 of 2
opening and closing force evaluation, opening torque bypass switch evaluation, disc
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wedging margin evaluation, and stroke time evaluation.
APS will develop a new procedure to apply this acceptance criteria to MOV dynamic testing activities.
This procedure will also include a timeframe for applying the acceptance criteria to collected data following performance of a dynamic test.
This timeframe is expected to be within'even days following the dynamic test for those MOVs tested while the unit is in Mode 1 and within 30 days followingcompletion of an outage forthose MOVs tested during the, outage.
The procedure containing this additional acceptance criteria and the timeframes for applying this criteria to collected data will be issued prior to the next Unit 3 refueling outage scheduled for September 1992.
Following issuance of the new MOV dynamic testing acceptance criteria, results e
of dynamic tests performed prior to issuance of the new procedure will be reviewed for compliance with the new acceptance criteria.
This review will be completed within six months following issuance of the new procedure.
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