ML17306A206

Monthly Operating Repts for Sept 1991 for Palo Verde,Units 1,2 & 3.W/911014 Ltr

ML17306A206
Person / Time
Site:	Palo Verde
Issue date:	09/30/1991
From:	Chavet K, James M. Levine ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
254-01751-JML-K, 254-1751-JML-K, NUDOCS 9110170130
Download: ML17306A206 (34)

Text

ACCELERATED DIS UTION DEMONS ION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)ACCESSION NBR:9110170130 DOC.DATE: 93~~NOTARIZED:

NO DOCKET g 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 CHAVET,K.A.

Arizona Public Service Co.(formerly Arizona Nuclear Power LEVINEiJ.M.

Arizona Public Service Co.(formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION I

SUBJECT:

Monthly o repts for Sept 1991 for Palo Verde, Units 1,2 S.W/911014 r.DISTRIBUTION CODE: IE24D COPIES RECEIVED:LTR ENCL SIZE: TITLE: Monthly Operating Report (per Tech Specs)NOTES:STANDARDIZED PLANT Standardized plant.Standardized plant.D 05000528 p, 05000529 05000530 D RECIPIENT ID CODE/NAME PD5 LA TRAMMELL, C INTERNAL: ACRS AEOD/DSP/TPAB NRR/DOEA/OEAB RGN5 EXTERNAL: EGGG BRYCE,J.H NSIC NOTES COPIES LTTR ENCL 3 3 1 1 10 10 1 1 1 1 1 1 1 1 1 1 1 1 RECIPIENT ID CODE/NAME PD5 PD THOMPSON,M AEOD/DOA NRR/DLP/&PEB10 R NRC PDR COPIES LTTR ENCL 1 1 1 1 1 1 1 1 1 1 1 1 D D NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE iVASTE!CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT.20079)TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!TOTAL NUMBER OF COPIES REQUIRED: LTTR 26 ENCL 26 D D S 4 C Arizona Public Service Company PALO VERDE NUCLEAR GENERATING STATION P.O.BOX 52034~PHOENIX, ARIZONA 85072-2034 JAMES M.LEVINE VICE PRESIDENT NUCLEAR PRODUCTION 254-01751-JML/KAC October 14, 1991 Docket Nos.STN 50-528/529/530 Document Control Desk U.S.Nuclear Regulatory Commission Mail Station P1-37 Washington, D.C.20555

Subject:

Palo Verde Nuclear.Generating Station (PVNGS)Units 1, 2, and 3 Monthly Operating Reports for September 1991 File: 91-024-404 Attached are the Monthly Operating Reports for September 1991, prepared and submitted pursuant to Specification 6.9.1.6 of Appendix A (Technical Specifications) to the Palo Verde Nuclear Generating Station, Units 1, 2, and 3 Operating Licenses.By copy of this letter, we are also forwarding the Monthly Operating Reports to the Regional Administrator of the Region V Office.If you have any questions, please contact Mr.Kent A.Chavet, at (602)340-4718.Very truly yours, JML/KAC/kac Attachments cc: J.B.Martin D.H.Coe A.C.Gehr A.H.Gutterman XNPO Records Center Utility Data Institute (all w/attachments) 9iioi70i30 910930 PDR ADOCK 05000528 R-"-.---'-=-PDR

I t I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K.A.Chavet MONTH: September 1991 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 1235 17 1233 1233 19 1235 20 1239 21 1240 22 1239 23 1241 24 1240 25 521 10 1239 26 779 1242 27 1156 12 1245 28 1218 13 1243 29 1236 14 858 30 1236 2

REFUELING INFORMATION DOCKET NO.50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K.A.Chavet Scheduled date for next refueling shutdown.02/01/92, 3rd refueling Scheduled date for restart following refueling.

04/11/92 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment2 Yes.Figures 3.2-2 and 3.2-2A of the Technical Specifications will require revision to reflect different DNBR margin limits.Scheduled date for submitting proposed licensing action and supporting information.

12/2/91 Important Licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, and new operating procedures.

The U1C4 reload analysis has been performed by ABB-CE using methodology from Topical Report CENPD-266-P-A, with revisions to biases and uncertainties for both the ROCS-NEM computer code and the net rod worth (N-1)calculation to include more recent measurements in the data base~A Technical Specification change request has been submitted to the NRC which will allow the use of advanced, zircaloy-based cladding alloys instead of Zircaloy-4 on up to 80 fuel rods in two fuel assemblies.

The number of fuel assemblies.

a)In the core.241 b)In the spent fuel storage pool.188 Licensed spent fuel storage capacity.1329 Intended change in spent fuel storage capacity.None Projected date of last refueling that can be discharged to spent fuel storage pool assuming present capacity.2004 (18 Month reloads and full core discharge capability).

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OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO.50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K.A.Chavet Se tember 1991 09/01 09/14 09/14 09/14 09/14 09/15 09/17 09/17 09/21 09/22 09/24 09/24 09/24 09/24 09/25 09/25 09/25 09/25 0000 1501 1510 1722 1730 0401 0351 2046 1742 0348 0233 0709 1257 1630 0000 0730 1100 1830 Unit began the month in Mode 1, 100%RX power.CEA slipped during performance of 41ST-1SF01.

Commenced power reduction due to COLSS being declared inoperable because of the slipped CEA.Entered Mode 3 when RX tripped on High Steam Generator Level after economizer valve SGN-FV1112 failed open.Also received Main Steam Isolation Signal (MSIS)due to High Steam Generator level.Declared NUE due to MSIS..Terminated NUE.Entered Mode 4 to work on pressurizer relief valve.This work was unrelated to the initial cause of the outage.Entered Mode 5.Entered Mode 4.Entered Mode 3.Entered Mode 2.Entered Mode l.Main generator synchronized to the grid.Plant stabilized at 18%for RWT boron concentration measurement.

Commenced power ascension at 3%per hour.RX power ascension stopped at 47%for evaluation of RCS iodine levels.Commenced RX power ascension.

RX power stabilized at 65%for boron addition to RWT.Also performed RCS leak rate test, 41ST-1RC02 09/26 09/27 1730 0620 Commenced RX power ascension to 100%power.Stabilized plant at 98.7%for completion of maintenance on Extraction Drain Pump"B".09/28 09/30 1137 2400 RX power at 100%.Unit ended the month in Mode 1, 100%RX power.4

SHUTDOWNS AND POWER REDUCTIONS September 1991 DOCKET NO 50-528 UNIT NAME PVNGS-1 DATE COMPLETED BY K.A.Chavet No.Outage Method of Duration Shutting System Date Type Hours Reason Down Reactor-LER No.Code'omponent Code~Cause and Corrective Action to Prevent Recurrence 91/03 09/14/91 F 235.6 N/A N/A N/A COLSS declared inopera after CEA slipped during surveillance testing.RX tripped on High Steam Generator Level after economizer valve failed open.~F-Forced S-Scheduled zReason: A-Equipment Failure(Explain)

B-Maintenance or Test C-Refueling D-Regulatory Restriction E-Operator Training&License Examination F-Administrative G-Operational Error H-Other (Explain)~Method: 1-Manual 2-Manual Scram 3-Automatic Scram 4-Continuation from Previous Month 5-Reduction of 20%or Greater in the Past 24 Hours 9-Other-(Explain)

'Exhibit F-Instructions for Preparation of the Data Entry Sheets for Licensee Event Report (LER)File (NUREG 0161)~Exhibit H-Same Source 5

0 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K A Chavet MONTH: September 1991 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 1225 17 1244 1227 18 1239 1226 19 1239 1231 20 1241 1228 21 1238 1228 22 1239 1230 23 1240 1234 24 1238 1233 25 1244 10 1242 26 1246 1245 27 1244 12 1250 28 1209 1251 29 1245 1250 30 1248 15 1248 1248

REFUELING INFORMATION DOCKET NO.50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K A Chavet Scheduled date for next refueling shutdown.10/17/91, 3rd refueling Scheduled date for restart following refueling.

12/26/91 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?

No.Analyses indicate that no proposed Technical Specification change or other license amendment will be required as a result of the next refueling.

Scheduled date for submitting proposed licensing action and supporting information.

N/A Important Licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, and new operating procedures.

U2C4 is typical of PVNGS reload cycles.The number of fuel assemblies.

a)In the core.241 b)In the spent fuel storage pool.204 Licensed spent fuel storage capacity.1329 Intended change in spent fuel storage capacity.None Projected date of last refueling that can be discharged to spent fuel storage pool assuming present capacity.2004 (18 Month reloads and full core discharge capability).

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OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO.50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K.A.Chavet Se tember 1991 09/01 09/30 0000 2400 Unit began the month in Mode 1, 100%RX power.Unit ended the month in Mode 1, 100%RX power.9

SHUTDOWNS AND POWER REDUCTIONS September 1991 DOCKET NO 50-529 UNIT NAME PVNGS-2 DATE COMPLETED BY K.A.Chavet No.Outage Duration Date Type Hours Reason Method of Shutting Down Reactor~System LER No.Code4 Cause and Corrective Component Action to Code~Prevent Recurrence No reactor shutdowns or significant power reductions occurred during the month.~F-Forced S-Scheduled

~Reason: A-Equipment Failure(Explain)

B-Maintenance or Test C-Refueling D-Regulatory Restriction E-Operator Training 6 License Examination F-Administrative G-Operational Error H-Other (Explain)~Method: 1-Manual 2-Manual Scram 3-Automatic Scram 4-Continuation from Previous Month 5-Reduction of 20%or Greater in the Past 24 Hours 9-Other-(Explain)

~Exhibit F-Instructions for Preparation of the Data Entry Sheets for Licensee Event Report (LER)File (NUREG 0161)~Exhibit H-Same Source 10 1

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.50-530 UNIT NAME PVNGS-3 DATE COMPLETED BY K.A.Chavet MONTH: September 1991 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 17 1255 18 1251 1253 761 20 1254 1245 1253 1252 22 1252 1147 23 1253 1176 24 1255 1164 25 1256 10 1088 26 1256 1137 27 1254 12 1256 28 1256 1258 29 1257 14 1257 30 1257 1256 16 1256 12

REFUELING INFORMATION DOCKET NO.50-530 UNIT NAME PVNGS-3 DATE COMPLETED BY K.A.Chavet Scheduled date for next refueling shutdown.09/15/92, 3rd refueling Scheduled date for restart following refueling.

11/14/92 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment'?

'he need for a Technical Specification change or other license amendment has not yet been determined.

Scheduled date for submitting proposed licensing action and supporting information.

N/A Important Licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, and new operating procedures, U3C4.is typical of PVNGS reload cycles.The number of fuel assemblies.

a)In the core.241 b)In the spent fuel storage pool.192 Licensed spent fuel storage capacity.1329 Intended change in spent fuel storage capacity.None Projected date of last refueling that can be discharged to spent fuel storage pool assuming present capacity.2005 (18 Month reloads and full core discharge capability).

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OF OPERATING EXPERIENCE FOR THE MONTH Se tember 1991 DOCKET NO.UNIT NAME DATE COMPLETED BY TELEPHONE 50-530 PVNGS-3 10 8 91 K.A.Chavet 602 340-4718 09/01 09/02 09/02 09/03 09/05 09/30 0000 1431 1733 2012 0001 2400 Unit began the month in Mode 3.Entered Mode 2.Entered Mode 1.Main generator synchronized to grid.RX power at 100%.Unit ended the month in Mode 1.14-r SHUTDOWNS AND POWER REDUCTIONS September 1991 DOCKET NO 50-530 UNIT NAME PVNGS-3 DATE COMPLETED BY K.A.Chavet No.Outage Duration Date Type~Hours Reason~Method of Shutting Down Reactor~System LER No.Code'ause and Corrective Component Action to Code~Prevent Recurrence 91/07 08/31/91 F 68.2 N/A N/A N/A Manual RX/turbine trip from 20%per shutdown procedure.

Tech.Spec.LCO 3.8.3.1 (b)applied due to loss of the"C" Inverter.~F-Forced S-Scheduled

~Reason: A-Equipment Failure(Explain)

B-Maintenance or Test C-Refueling D-Regulatory Restriction E-Operator Training 6 License Examination F-Administrative G-Operational Error H-Other (Explain)~Method: 1-Manual 2-Manual Scram 3-Automatic Scram 4-Continuation from Previous Month 5-Reduction of 20%or Greater in the Past 24 Hours 9-Other-(Explain) 4Exhibit F-Instructions for Preparation of the Data Entry Sheets for Licensee Event Report (LER)File (NUREG 0161)Exhibit H-Same Source 15 t