ML17313A306

Forwards LER 98-003-00 Reporting Unanalyzed Condition Which Exists When Automatic Fast Bus Transfer Capability Is Blocked to Prevent Transfer of non-class Plant Equipment from Unit Auxiliary to Startup Transformer

ML17313A306
Person / Time
Site:	Palo Verde
Issue date:	03/20/1998
From:	Overbeck G ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17313A307	List: ML17313A306
References
192-01015-GRO-D, 192-1015-GRO-D, NUDOCS 9803300063
Download: ML17313A306 (4)

Text

~CATEGORY REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)ACCESSION NBR:9803300063 DOC.DATE: 98/03/20 NOTARIZED:

NO DOCKET I FACIL:STN-'50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi 05000528 AUTH.NAME AUTHOR AFFILIATION

~OVERBECK,G.R.

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

SUBJECT:

Forwards LER 98-003-00 reporting unanalyzed condition which exists when automatic fast bus transfer capability is blocked to prevent transfer of non-class plant equipment from unit auxiliary to startup transformer.

DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR ENCL SIZE: TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.'NOTES: STANDARDIZED PLANT RECIPIENT ID CODE/NAME PD4-2 PD INTERNAL: ACRS AEOD/SPD/RRAB NRR/DE/ECGB NRR/DE/EMEB NRR/DRCH/HICB NRR'/DRCH/HQMB NRR/DSSA/SPLB RES/DET/EIB EXTERNAL: L ST LOBBY WARD NOAC POORE,W.NRC PDR COPIES LTTR ENCL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RECIPIENT ID CODE/NAME CLIFFORD,J IL CENTE NRR D EELB NRR/DRCH/HHFB NRR/DRCH/HOLB NRR/DRPM/PECB NRR/DSSA/SRXB RGN4 FILE 01 LITCO BRYCE,J H NOAC QUEENER,DS NUDOCS~FULL TXT COPIES LTTR ENCL 1 1 2 2 1'1 1 1 1 1 1 1 1 1 1 1 1 1'1 1'1 05000528 G D N NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE.TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD)ON EXTENSION 415-2083 FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED: LTTR 25 ENCL 25 Ik Commitment.

Innomtlon.

Eneryt/Peto Verde Nuciear Generating Station Gregg R.Overbeck Vice President Nuclear Production TEL 602/393-5148 FAX 602/3934077 Mai1 Station 7602 P.O.Box 52034 Phoenix, AZ 85072-2034 U.S.Nuclear Reguiatoiy Commission ATl N: Document Control Desk Mail Station P1-37 Washington, D.C.20555-0001 192-01015-GRO/DGM/KR March 20, 1998

Subject:

Palo Verde Nuclear Generating Station (PVNGS)Units1,2, and 3 Docket Nos.STN 50-528/529/530 License Nos.NPF41/51/74 Licensee Event Report S840340 Attached please find Licensee Event Report (LER)98-00340 prepared and submitted pursuant to 10 CFR 50.73.This LER reports an unanalyzed condition which exists when the automatic fast bus transfer capability is blocked to prevent the, transfer of non-class plant equipment from the unit auxiliary transformer to the startup transformer.

Fast bus transfer would typically occur following a main turbine/main generator trip.At the time of the event, the fast bus transfer was'in automatic (i.e., not blocked)and the units were being operated in an analyzed condition and have since been.This LER does not contain any commitments.

In accordance with 10CFR50.73(d), a copy of this LER is being forwarded to the Regional Administrator, NRC Region IV.If you have any questions, please contact Daniel G.Marks, Section Leader, Nuclear Regulatory Affairs, at (602)393~92.Sincerely,.

GRO/DGM/KR/rlh Attachment cc: E.W.Merschoff K E.Perkins J.H.Moorman INPO Records Center (all.with attachment) 9803300063 980320 PDR ADQCK 05000528 S PDR Ib 0 ir