ML17310B230

LER 94-002-00:on 940317,main Steam Safety Valve Setpoints Found Out of Tolerance.Valves Adjusted,Certified & Returned to svc.W/940413 Ltr

ML17310B230
Person / Time
Site:	Palo Verde
Issue date:	04/13/1994
From:	Grabo B, James M. Levine ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
102-02904-JML-B, 102-2904-JML-B, LER-94-002, LER-94-2, NUDOCS 9404210106
Download: ML17310B230 (6)

Text

ACCELERATED D'~TRIBUTION DEMONSATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9404210106 DOC.DATE: 94/04/13 NOTARIZED: NO DOCKET FACIL:STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 AUTH. NAME AUTHOR AFFILIATION GRABO,B.A. Arizona Public Service Co. (formerly Arizona Nuclear Power LEVINE,J.M. Arizona Public Service Co. (formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION R

SUBJECT:

LER 94-002-00:on 940317,tested valves were found below allowed. Corrective action:valves were adjusted.

DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR ENCL .SIZE:

TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.

NOTES:Standardized plant. 05000530 A

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL D PDIV-' PD 1 1 TRAN,L 1 1 D

INTERNAL: ACRS 1 1 AEOD/DOA 1 1 AEOD/DSP/TPAB 1 1 AEOD/ROAB/DS P 2 2 NRR/DE/EELB 1 1 NRR/DE/EMEB 1 1 NRR/DORS/OEAB 1 1 NRR/DRCH/HHFB 1 1 NRR/DRCH/HICB 1 1 NRR/DRCH/HOLB 1 1 NRR/DRIL/RPEB 1 1 NRR/DRSS/PRPB 2 2 N~DSSA- SPLB 1 1 NRR/DSSA/SRXB 1 1 REG FIL 02 1 1 RES/DSIR/EIB 1 1 I LE 01 1 1 EXTERNAL: EG&G BRYCE,J. H 2 2 L ST LOBBY WARD 1 1 NRC PDR 1 1 NSIC MURPHY,G.A 1 1 NSIC POORE,W. 1 1 NUDOCS FULL TXT 1 1 D

D D

NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE iVASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM P 1-37 (EXT. 20079) TO ELIIUIINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED: LTTR 28 ENCL 28

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Arizona Public Service Company PALO VERDE NUCLEAR GENERATING STATION P.O. BOX 52034 ~ PHOENIX. ARIZONA 85072-2034 JAMES M. LEVINE 102-02904-JML/BAG/R JR VICE PRESIDENT NUCLEAR PRODUCTION April 13, 1994 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Mail Station P1-37 Washington, D.C. 20555

Subject:

'Palo Verde Nuclear Generating Station (PVNGS)

Unit 3 Docket No. STN 50-530 (License No. NPF-74)

Licensee Event Report 94-002-00 File: 94-020-404 Attached please find Licensee Event Report (LER) 94-002-00 prepared and submitted pursuant to 10CFR50.73. This LER reports Main Steam Safety Valve as-found relief settings that were out of the tolerance limits specified in Technical SpeciTication Limiting Condition for Operation 3.7.1.1. 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, Supervisor, Nuclear Regulatory Affairs, at (602) 393-6492.

Sincerely, JML/BAG/R JR/rv Attachment cc: W. F. Conway (all with attachment)

A. B. Beach K. E. Perkins K. E. Johnston INPO Records Center 94042i'Oi06 PDR ADOCK 9404i3 0500053'>

0 PDR

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LICENSEE EVENT REPORT (LER)

FACIUTY NAVE (I) DOCKET NUMS ER (2) PACE 3 Palo Verde Unit 3 0 5 0 0 0 53 Q T OF 0 TITLE (6)

Main Steam Safet EVENT DATE (SI Valve Set pints Out LER NUMBER (6) of Tol REPORT DATE P) 7 n OTHER FACIUTIES INVO VEO (6)

MONTH DAY YEAR FACIUTY NAMES YEAR NUMBEII NUMBER MONTH DAY DOCKET NUMBER(S)

V/A 0 5 0 0 0 0 3 9 4 9 40 02 N/A 0 5 0 0 0 OPE 8 ATINO THIS REPORT IS SVBMIlTEDPURSUANT TO THE REOVIREMENTS OF 10 CFR $: (Cheek one or mora ot rha toliovrtno) (11)

MCDE (0) 1 20A02(b) 20AO5(e) 5073(aX2)(i ) 73.71(b) 20AOS(a XI)0) 5026(eXI) 50.73(aX2Xv) 73.71(e) 8 6 2o aos(aXIX~I) 50.36(eX2) 50.73(aX2)(vIB OTHER (Sp arity dr Ada tract d atow anti in Terre HRC Femr 20A05(a XI)01) 50.73(aX2XI) 50.73(aX2)(vtIXA) 366A) 20AOS(a X IXIv) 50.73(a)(2X6) 50.73(aX2)(vIT X 8) 20A05(aXIXv) 50.73(aX2XK) 50.73(aX2)(*)

UCENSEE CONTACT FOR THIS LER (12)

NAME TELEPHONE NUMBER B. A. Grabo, Superviso r; Nuclea r Regulatory Affairs A C 6 02 39 3- 64 92 COMPLETE ONE UNE FOR EACH COMPONENT FAILURE DESCREIED IN THIS REPORT(13)

MANUFAC EPORTABLE MANUFAC.

CAUSE SYSTEM COMPONENT TVRER TO NPRDS SYSTEM COMPONENT TURER SUPPLEMENTAL REPORT EXPECTED (16) MONTH DAY YEAR EXPECTED SUBMISSION X YES Tiiyaa. eornpiata EXPECTED SVBMISSIOH DATE) NO DATE (15) 06 309 4 ABSTRACT (Umt to 1400 apace a Laapprerimataiy ditaan ainoiaapaea typewritten Inca) (16)

On March 18, 1994, Unit 3 was in Mode 1 (POWER OPERATION) at approximately 86 percent power with one Main Steam Safety Valve (MSSV) gagged when APS Engineering personnel completed Trevitesting of 13 of the 20 MSSV. The relief settings on 7 of the tested valves were found below the allowed - 1 percent tolerance limit specified in Technical Specification 3.7.1.1. All 7 valves were adjusted, certified, and returned to service. The relief setpoints of the other 6 valves were found within the allowed +/- 1 percent limit. One of these valves could not be certified and was left inoperable. On March 19, 1994, Unit 3 was shutdown for the start of the scheduled refueling outage, 3R4. During this outage the remaining 7 untested MSSVs and 4 Pressurizer Safety Valves (PSV) will be removed and sent to the Westinghouse service facility for testing. A supplement to this LER will be submitted when testing of all the Unit 3 MSSVs and PSVs has been c'ompleted and analyzed by APS Engineering.

The most recent LERs on MSSV Out-of-Tolerance conditions are 528/93-009-02, 529/91-005-01, and 530/92-005-00.

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