ML17311A833

Forwards LER 95-004 Re Units Being Outside Basis Due to Discovery of non-conservative Assumptions Used in Two Original Containment Electrical Penetration Protection Calculations

ML17311A833
Person / Time
Site:	Palo Verde
Issue date:	04/27/1995
From:	James M. Levine ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17311A834	List: ML17311A833 ML17311A835
References
192-00928-JML-B, 192-928-JML-B, NUDOCS 9505020314
Download: ML17311A833 (3)

Text

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9505020314 DOC.DATE: 95/04/27 NOTARIZED: NO DOCKET N FACIL:STN-50-528 Palo Verde Nuclear Station, 'Unit 1, Arizona Publi 05000528 AUTH. NAME AUTHOR AFFILIATION LEVINE,J.M. Arizona Public Service Co. (formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION F Document Control Branch (Document Control Desk)

SUBJECT:

Forwards LER 95-004 re units being outside basis due to discovery of non-conservative assumptions used in two original containment electrical penetration protection calculations.

DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR ENCL SIZE: C TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.

NOTES:STANDARDIZED PLANT 05000528 RECIPIENT COPIES RECIPIENT'D COPIES ID CODE/NAME LTTR ENCL CODE/NAME LTTR ENCL PD4-2'D 1 1 HOLIAN, B 1 1 TRAN,L 1 1 INTERNAL: ACRS AEOD/SPD/RRAB 1

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il I Arizona Public Service Company PALO VERDE NUCLEAR GENERATING STATION P.O. BOX 52034 ~ PHOENIX. ARIZONA 85072.2034

~ 92-00928-JMUBAG/BE JAMES M. LEVINE April 27, 1995 VICE ~ESIOEN NUCLEAR PROCUC I ION U. S. Nuclear Regulatory Commission ATTN: Document Control Desk, Mail Station P1-37 Washington, DC 20555

Subject:

Palo Verde Nuclear Generating Stat!on (PVNGS)

Units 1, 2, and 3 Docket Nos. STN 50-528, 50429, 50430 License Nos. NPF41, NPF41, NPF-74 Licensee Event Report 9540440 Attached please find Licensee Event Report (LER) 95-004-00 prepared and, submitted pursuant.to 10CFR50.73. This LER reports the identification of a condition that resulted in the units being outside the design basis of the plant due to the discovery of non~nservative assumptions used in two (2) original containment electrical penetration protection calculations. 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 Burton A. Grabo, Section Leader, Nuclear Regulatory Affairs, at (602) 393-6492.

Sincerely, C.

JML/BAG/BE/pv Attachment cc: L. J. Callan (all with attachment)

K. E. Perkins K. E. Johnston INPO Records Center 95050203i4 950427 PDR ADOCK 05000528' PDR