ML17306A940

Special Rept 1-SR-92-005:on 920822,discovered That Info Could Not Be Dispatched from Meterological Tower During Routine Surveillance of Daily Midnight Logs.Tower Declared Operable on 920823 Following Power Restoration

ML17306A940
Person / Time
Site:	Palo Verde
Issue date:	08/28/1992
From:	James M. Levine ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
1-SR-92-005, 1-SR-92-5, 192-00799-JML-T, 192-799-JML-T, NUDOCS 9209020277
Download: ML17306A940 (8)

Text

AGCEI.ERATED DIST. UTION DEMONSTRATION SYSTEM i'EGULATORY Fl3RNATIQN DISTRIBUTION SY~~N (RIDS)

ACCESSION NBR:9209020277 DQC. DATE: 92/08/28 NOTARIZED: NO DOCKET ¹ FACIL: STN-50-528 Palo Verde Nuclear Station> Unit 1> Ari zona Publi 05000528

{

STN-50-529 Palo Verde Nuclear Station> Unit 2> AT izona Publi 05000529 STN-50-530 Palo Verde Nuclear Station> Unit 3> Arizona Publi 05000530 AUTH. NAME AUTHOR AFFILIATION LEVINE> J. N. Arizona Public Service Co. (Formerly Arizona Nuclear Power RECIP. MANE, RECIPIENT AFFILIATION (Document Control Desk)

Document ContT ol Branch R

SUBJECT:

Special Rept 1-SR-92-005: on 9'20822> discovered that info could not be dispatched fram meterological tamer during routine surveillance o% daily midnight logs. Tower declared operable on '>>20823 following power restoration.

DISTRIBUTION CODE: IE22D COPIES RECEIVED: LTR ENCL SIZE:

TITLE: 50. 73/50. '>> Licensee Event Report (LER ) > Incident Rpt> etc.

. NOTES: STANDARDIZED PLANT 05000'528 Standardized plant. 0500052$

Standardi z ed p lant. 05000530 D

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NANE LTTR ENCL PD5 LA 1 1 PD5 PD 1 1 TRANMELL> C 1 1 THOMPSON> C 1 1 I NTERNAL: AC NN 2 2 ACRS 2 2 AEOD/DOA 1 1 AEOD/DSP /TPAB 1 1 AEQD/ROAD/DSP 2 2 NRR/DET/ENWEB 7E 1 NRR/DLPG/LHFB10 1 NRR /DLP 6/LP EB 10 1 1 NRR /DQEA/QEAB 1 1 NRR/DREP/PRPB11 2 2 NRR/DST/SELB SD 1 NRR/DST/SICBSH3 1 S SPLB8D1 1 1 NRR/DST/SRXB 8E 1 1 EG FI E 02 1 1 RES/DSIR/E I 8 1 1 RG LE 01 1 EXTERNAL: EG8(G BRYCE> J. H L ST LOBBY NARD 1 NRC PDR NSIC NURPHY> G. A 1 1 NSIC POORE> N. NUDOCS FULL TXT 1 0 NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK.

ROOM Pl-37 (EXT. 504-2065) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REGUIRED: LTTR 32 ENCL 32

Arizona Public Service Company PALO VERDE NUCLEAR GENERATING STATION P.O. BOX 52034 ~ PHOENIX. ARIZONA 85072-2034 JAMES M. LEVINE VICE PRESIDENT NUCLEAR PRDDUCTIDN 192-00799-JML/TRB/NLT August 28, 1992 U. S. Nuclear Regulatory'Commission Attention: Document Control Desk Mail Station Pl-37 Washington, D.C. 20555

Dear .Sirs:

Subj ect: Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2, and 3 Docket No. STN 50-528 (License No. NPF-41)

Docket No. STN 50-529,(License No. NPF-51)

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

Special Report 1-SR-92-005 le'020-404.

Enclosed please find Special Report 1-SR-92-005 prepared and submitted pursuant to PVNGS Emergency Plan Implementing Procedure (EPIP-03), "Notification of Unusual Event Implementing Actions." This report discusses a condition requiring the declaration of a NOTIFICATION OF UNUSUAL EVENT due to the loss of assessment capability of all meteorological instrumentation caused by a loss of power during inclement weather.

An investigation'of this event is being performed in accordance with the Arizona Public Service Company (APS) Incident Investigation Program and is expected to be completed by September 23, 1992. A preliminary review of meteorological instrumentation data has revealed that on at least one other occasion, there was a loss of power to the meteorological instrumentation which required the declaration of a NOTIFICATION OF UNUSUAL EVENT, but no notification was made.

The investigation will include further review of recorded data and an evaluation of the requirements for declaring a NOTIFICATION OF UNUSUAL EVENT for loss of meteorological instrumentation. APS will supplement this special report within 30 days following completion of this investigation.

Opoog 9209020277 920828 PDR ADOCK 05000528 S PDR

NRC Document Control Desk Special Report 1-SR-92-005 Page 2 If you have any questions, please contact Thomas R. Bradish, Compliance Manager at (602) 393-5421.

Sincerely, JML/TRB/NLT/pmm Enclosure cc: W. F. Conway (all with enclosure)

J. B. Martin J. A. Sloan

n' ENCLOSURE PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 NOTIFICATION OF UNUSUAL EVENT DOCKET NO. 50-528, LICENSE NO.

50-529, LICENSE NO. NPF-51 NPF-41'OCKET NO.

DOCKET NO. 50-530, LICENSE NO. NPF-74 SPECIAL REPORT 1-SR-92-005

0 t

I I

I

PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND '3 NOTIFICATION OF UNUSUAL EVENT DOCKET NO. 50-528, LICENSE NO. NPF-41 DOCKET NO. 50-529, LICENSE NO. NPF-51 DOCKET NO. 50-530, LICENSE NO. NPF-74 SPECIAL REPORT 1-SR-92-005 This Special Report is provided pursuant to PVNGS Emergency Plan Implementing Procedure (EPIP-03), "Notification of Unusual Event Implementing Actions," to report a condition requiring the declaration of an Unusual Event for Palo Verde Units 1, 2, and 3 at approximately 1700 MST on August 23, 1992. The Notification was terminated at approximately 1700 MST on August 23, 1992.

On August 22, 1992, at approximately 2245 MST, Palo Verde Units 1, 2, and 3 were in Mode 1 (POWER OPERATION) operating at approximately 100 percent power when the Unit 1 Control Room identified during the performance of Surveillance Test 41ST-1ZZ16, "Routine Surveillance Daily Midnight Logs," that information could not be retrieved from the Meteorological Tower. An Auxiliary Operator was dispatched to the Meteorological Tower to obtain local data and reported that power was lost to the Meteorological Tower. Loss of power was verified and Technical Specification 3.3.3.4 Action a was entered. The Meteorological Tower provides the meteorological monitoring instrumentation for wind speed, wind direction, and air temperature indication required by Technical The operability of the instrumentation en'sures that meteorological data Specification'.3.3.4.

are available for estimating potential radiation doses to the public as a result of routine or accidental release of radioactive materials to the atmosphere.

Radiation Protection was notified of the loss of power to the Meteorological Tower. In the event of an emergency, Radiation Protection will perform dose assessments using conservative "default values" when meteorological data is unavailable, in accordance with PVNGS Emergency Plan Implementing Procedure (EPIP-14), "Dose Assessment."

Control Room personnel notified the Arizona Public Service Company (APS)

Transmission Control Center of the power outage. The Meteorological Tower is powered from the APS distribution system for Buckeye, Arizona. This power source was used during the construction of Palo Verde and is separate from the offsite power sources used to operate the PVNGS units. The Transmission Control Center dispatched a division crew to restore power.

On August 23, 1992, at approximately 0557 MST, the Meteorological Tower was declared operable following power restoration and satisfactory completion of Surveillance Test 41ST-1ZZ16, and Technical Specification 3.3.3.4 Action a was exited.

On August 23, 1992, at approximately 1700 MST, during a review of the previous night's event, the Unit 1 Shift Supervisor determined that a NOTIFICATION OF UNUSUAL EVENT was required in accordance with PVNGS Emergency Plan Implementing Procedure (EPIP-02), "Emergency Classification," due to the loss of assessment capability of all meteorological instrumentation. In accordance with EPIP-03, the NRC was notified at approximately 1711 MST of a declaration and immediate termination of a Notification of Unusual Event. All appropriate state and local organizations were notified in accordance with EPIP-03 and an NRC Resident Inspector was notified.

0'