ML17306A717

Advises That Util Determined That DG Full Load Rejection Testing Is Not Being Performed & That Performance of Subj Testing (18-month Intervals) Is Necessary to Comply W/ Reg Guide 1.108.Amend to TS Will Be Submitted by 920901

ML17306A717
Person / Time
Site:	Palo Verde
Issue date:	05/08/1992
From:	Conway W ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RTR-REGGD-01.108, RTR-REGGD-1.108 161-04762-WFC-D, 161-4762-WFC-D, NUDOCS 9205140273
Download: ML17306A717 (6)

Text

ACCELERATED DIS UTION DEMONSTRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9205140273 DOC.DATE: 92/05/08 NOTARIZED: NO "DOCKET PI FACIL:STN-50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi 05000528 STN-50-529 Palo Verde Nuclear Station, Unit 2, Arizona Publi 05000529 STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 AUTH.NAME AUTHOR AFFILIATION CONWAY,W.F.

Arizona Public Service Co.

(formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

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SUBJECT:

Advises that util determined that DG full load rejection testing is not being performed 6 that performance of subj testing (18-month intervals) is necessary to comply w/

Reg Guide 1.108.Amend to TS will be submitted by 920901.

DISTRIBUTION CODE:

A001D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: OR Submittal: General Distribution NOTES:STANDARDIZED PLANT Standardized plant.

Standardized plant.

D A

05000528 05000529 D

05000530 D

RECIPIENT ID CODE/NAME PD5 LA TRAMMELL,C INTERNAL: ACRS NRR/DET/ESGB NRR/DST 8E2 NRR/DST/SICB8H7 NUDOCS-ABSTRACT OGC/HDS1 RES/DSIR/EIB EXTERNAL: NRC PDR COPIES LTTR ENCL RECIPIENT ID CODE/NAME PD5 PD THOMPSON,M NRR/DET/ECMB 7D NRR/DOEA/OTSBl1 NRR/DST/SELB 7E NRR/DST/SRXB 8E OCJ' E

FI 01 NSIC COPIES LTTR ENCL D

S NOTE TO ALL"RIDS" RECIPIENTS:

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PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED:

LTTR 26 ENCL

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1 Arizona Public Service Company P.O. BOX 53999

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PHOENIX, ARIZONA85072-3999 WILLIAMF. CONWAY EXECUTIVEVICEPAESIDENT NUCLEAII 161-04762-WFC/DAF May 8, 1992 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-37 Washington, DC 20555

Reference:

Letter dated March 2, 1992, from C. M. Trammell, Senior Project Manager, Project Directorate V, Division of Reactor Projects III/IV/V, NRC, to W. F. Conway, Executive Vice President, Nuclear, APS

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Docket Nos. STN 50-528/529/530 Units 1, 2, and 3 Diesel Generator Full Load Rejection Testing File: 92-056-026 92-005-41 9.5 In response to the referenced letter, Arizona Public Service Company (APS) has determined that diesel generator full load rejection testing is not being performed on PVNGS Units 1, 2, and 3, and that performance of this testing (at 18-month intervals) is necessary to comply with Regulatory Guide 1.108.

In addition, APS has determined that recovery testing is not being performed.

Recovery testing requires verification that, with the diesel generator operating in a test mode (connected to its bus), a simulated safety injection signal overrides the test mode by (1) returning the diesel generator to standby operation (running unloaded) and (2) automatically energizes the emergency loads with offsite power.

This testing is also required every 18 months to comply with Regulatory Guide 1.108. To correct these discrepancies, APS willsubmit amendments to the PVNGS Technical Specifications to incorporate this testing by September 1, 1992. These actions will ensure compliance with the UFSAR and Regulatory Guide 1.108.

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V 161-04762-WFC/DAF May 8, 1992 1

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U. S. Nuclear Regulatory Commission

'TTN:

Document Control Desk Diesel Generator Full Load Rejection Testing Page 2 i

During the current Unit 1 refueling outage, the surveillance test procedures were revised for Unit 1 and full load rejection testing and recovery testing,'were successfully performed for the Unit 1 diesel generators.

It is anticipated that the s'urveillance test-pro'cedures for Units 2 and 3 will be revised to incorporate these tests by September 1, 1992.

If you have additional questions, please contact Thomas R. Bradish at (602) 393-5421.

Sincerely, WFC/DAF/daf CC:

J. B. Martin D. H. Coe C. M. Trammell A. C. Gehr A. H. Gutterman

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