ML17223B212

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Monthly Operating Repts for May 1991 for St Lucie.W/910613 Ltr
ML17223B212
Person / Time
Site: Saint Lucie  NextEra Energy icon.png
Issue date: 05/31/1991
From: Breen J, Sager D
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
L-91-169, NUDOCS 9106210130
Download: ML17223B212 (16)


Text

~ ACCELERATED DIS UTION DEMONSTPA.TION SYSTEM

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REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR: 9106210130 DOC. DATE: 91/05/31 NOTARIZED: NO DOCKET FACIL:50-335 St. Lucie Plant, Unit 1, Florida Power 6 Light Co. 05000335 50-389 St. Lucie Plant, Unit 2, Florida Power 6 Light Co. 05000389 AUTH. NAME AUTHOR AFFILIATION BREEN,J.J. Florida Power 6 Light Co.

SAGER,D.A. Florida Power S Light Co.

RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

Monthly 'operating repts for May 1991 for St Lucie.N/910613 ltr.

DISTRIBUTION CODE: IE24D COPIES RECEIVED:LTR TITLE: Monthly Operating Report (per Tech Specs) g ENCL Q SIZE: lO NOTES RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD2'-2 LA 3 3 PD2-2 PD 1 1 NORRIS,J 1 1 INTERNAL: ACRS 10 10 AEOD/DOA 1 1 AEOD/DS P/TPAB 1 1 +~&. <<+/ PEB10 1 1 NRR/DOEA/OEAB 1 1 REG FILE 01 1 1 RGN2 1 1 EXTERNAL: EGS(G BRYCE,J.H 1 1 NRC PDR 1 1 NSIC 1 1 NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAlvKFROM DISHUBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 24 ENCL 24

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P.O. Box 12, Ft. Pierce, FL 34954-0128 JUN 1 3 t99t L-91-169 10 CFR 50.36 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Gentlemen:

Re: St. Lucie Units 1 and 2 Docket Nos. 50-335 and 50-389 Monthl 0 eratin Re ort Attached are the May 1991 Operating Status and Summary of Operating Experience Reports for St. Lucie Units 1 and 2.

Very truly yours, D. A. ager Vice esident St. L ie Plant DAS:JJB:kw cc: Stewart D. Ebneter, Regional Administrator, Region Senior Resident Inspector, USNRC, St. Lucie Plant II, USNRC Attachments DAS/PSL 4451 9106210130 910531 PDR ADOCK 05000335 R

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t AVERAGE DAILY UNIT PO'HER LEVEL DOCKET NO ~ 50-335 DATE COMPLETED BY Z.Z. Breen TELEPHONE 407 465-3550 MONTH MAY 1991 DAY AVERAGE DAILY POSER LEVEL (MWe-Net) 856 5/ 2/91 854 5/ 3/91 849 5/ 4/91 842 5/ 5/91 40 5/ 6/91 142 5/ 7/91 575 5/ 8/91 700 5/ 9/91 846 5/10/91 846, 5/1 1/91 844 5/12/91 848 5/13/91 5/14/91 5/15/91 721 5/16/91 849 5/17/91 845 5/1$ /91 5/19/91 5/20/91 5/21/91 807 5/22/91 737 5/23/91 851 5/24/91 858 5/25/91 5/26/91'/27/91 841 5/28/91 5/29/91 5/30/91 5/31/91 588

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OPERATING DATA REPORT DOCKET NO 50 335 DATE JUN 1 S 't991 COMPLETFD BY Je iJi BREEN TELEPHONE 407/465/3550 OPERATING STATUS

1. lJNXT NAME) ST+ LUCXE UNIT 1
2. REPORTING PERIOD: MAY 1991 3i LICENSED THERMAL POWER (MWT)i ~780 4i NAMEPI ATE RATING (GROSS MWE)f 8 e 5+ DESIGN ELECTRXCAL RATING (NET MWE)+ 838 6i MAXIMUM DEPENDABLE CAPACXTY (GROSS MWE>t 872 7i MAXIMtJM DEPENDABLE CAPACITY (NET MWE) l 839 8 XF CHANGES OCCUR XN CAPACXTY RATINGS <ITEMS NUMBER 3 THROUGH 7)

SINCE LAST REPORT ~ GIVE REASONS:

POWER LEVEL TO WHXCH RESTRICTED~ XF ANY (NET MWE)

10. REASONS FOR RESTRICTIONS~ XF ANY'ONTHLY

- YTD- CUMULATIVE lii 12'UMBER HOURS XN REPORT PERXOD:

OF HOURS REACTOR WAS CRITICAL 744 715 3623 3576+4 126599iO 96534i9

13. REACTOR RESERVE SHUTDOWN HOURS eie OiO 205+3
14. HOURS GENERATOR ON-LXNE 709+8 3566' 95670i9 15'NXT RESERVE SHUTDOWN HOURS Oie OiO 39i3 16+ GROSS THERMAL ENERGY GENERATED <MWH) 1825086 9450032 246692086 17'ROSS ELECTRICAL ENERGY GENERATED (MWH> 600690 3154818 81363450
18. NET ELECTRICAL ENERGY GENERATED <MWH) 567661 2991924 76884666 19 UNIT SERVXCE FACTOR 95' 98 ' 75.6
28. UNIT AVAXLABXLXTYFACTOR 95i4 98i4 75.6
21. CAPACITY FACTOR (USING MDC NET) 9e 98 i 4 7I 22'APACXTY FACTOR (USING DER NET) '91i9 99' 74i2 23'NIT FORCED OUTAGE RATE ii9 0+4 4 i2
24. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS 18/18/91 ~ REFUELING 63 DAYS 25 XF SHUT DOWN AT END OF REPORT PERXOD ESTIMATED DATE OF STARTUP:

UNIT S&JTDOWNS AND POWER REDUCTIONS DOCKET NO. 0- 35 UNIT NAME ST L IE NIT 1 DATE gUN i3 199>

COMPLETED BY J. J. BREEN TELEPHONE 40 465-35 0 REPORT MONTH MAY 1 1 No. Date Type Duration (Hours)

Reason'ethod of Shutting Reactor'icensee Event Report System Code'omponent Code'ause & Corrective Action to Down ¹ Prevent Recurrence 910505 0.0 N/A RB CONROD Downpowered for Control Rod Testing.

910505 20.7 N/A RB CONROD Unit 1 down for Control Rod Testing.

910506 0.0 N/A RC ZZZZZZ Unit 1 held at approximately 45% power for Nuclear Instrumentation Calibration.

910506 F 13.5 91-03 HH PUMPXX Unit 1 was manually tripped due to Feedwater Pump tripping.

910506 0.0 N/A HH PUMPXX Power held at approximately 709o to monitor the 1A Heater Drain Pump and ASI stabilization.

F Forced Reasea Method cubit G - Inst tuctions for S Scheduled A - Equipmeat failure (cxphsin) 1 - Maaual Pcpatatioa of Data Entry B - Maintcaaacc or Test 2 - Manual Scram Sheets Licensee Eveat Report C - Refueling 3 - Automatic Scram (LER) File (NUREG-0161)

D - Regulatory astriction 4 - Continued E - Operator Traiuag gt Liccase Exaaiinatioa 5 - Load Red uctioa F - Administrative 9 - Other (Explam) Extubit 1 - Same Source G - Operatioasl Error (Expalin)

H - Other (Explain)

UNIT SHUTDOWNS AND POWER REDUCTIONS DDQEBT NQ. ~5U 3 UNU NANB ~SLU 53 DATE JUN f3 199l COMPLETED BY J. J. BREEN TELEPHONE ~40 465-3 5 ~

REPORT MONTH MAY 1 1 No. Date Type Duration (Hours)

Reason'ethod of Shutting Reactor'icensee Event Report System Code'omponent Code'ause & Corrective Action to

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Down Prevent Recurrence 910508 0.0 N/A HH PUMPXX Power held at approximately 80Fo to monitor the IA Heater Drain Pump and ASI stabilization.

10 910530 0.0 B N/A HF XXXXXX Unit I downpowered for cleaning of the 1A2 & IB2 waterboxes.

910531 0.0 N/A HF XXXXXX Unit 1 downpowered to approximately 709o for continued waterbox cleaning.

F Forced Rcasoa Method Ed'>it G - nnsttuctioas for S Schedukd A - Equipmcat failure (explain) 1 - Manual Preparation of Data Entry B - Maintenance or Test 2 - Manual Scram Sheets Liccascc Exeat Report C - Rcfueliag 3 - Automatic Scram (LER) File (NUREG-0161)

D - Reguhtory xatrictioa 4 - Coatinued E - Operator Training gc License Examination 5 - Load Reduction F - Administtative 9 - Other (Exphin) ~bit 1 - Same Source G - Opcratioaal Error (Expalia)

H - Other (Exphin)

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SUMMARY

OF OPERATING EXPERIENCE DOCKET NO ~ 50-335 UNIT St. Lucie 1 DATE UH 1 8 BX Z.Z. Breen199'OMPLETED TELEPHONE 407 465-3550 REPORT MONTH MAY 1991 On May 5, 1991, Unit 1 began a controlled shutdown for control rod testing. Power was then held at 33% for Transmission and Distribution(T&D) troubleshooting of voltage readings; the Unit then continued to decrease in power for control rod testing until it was taken offline. Control rod testing was completed on May 6, 1991, and Unit 1 began to increase in power. At approximately 454 power a hold was placed upon the Unit for a Nuclear Instrumentation Calibration. At 98% of full power the reactor was manually tripped in response to a runback initiated by the 1A Main Feedwater Pump.

The Unit was returned to power following corrective actions to the 5A feedwater heater level switch and the main feedwater pump low pressure trip setpoint. The Unit had hold points at approximately 704 and 80% to monitor the 1A Heater Drain Pump and ASI stabilization. On May 9, 1991, Unit 1 reached 1004 power and remained there until May 30, 1991.

On May 30, 1991, Unit 1 reduced power to approximately 70% for cleaning of the lA2 & 1B2 waterboxes. Due to a need for electrical power Unit 1 was increased to approximately 904 power, and then lowered again to 70% for completion of waterbox cleaning.

In accordance with the requirements of Technical Specification 6.9.1.6, there were no challenges to the PORVs or safety valves during the report period.

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO ~ 50-389 I~

DATE COMPLETED BY J. . reen TELEPHONE 407 465-3550 MONTH MAY 1991 DAY AVERAGE DAILY POWER LEVEL (MWe-Net) 5/ 1/91 806 5/ 2/91 861 5/ 3/91 857, 5/ 4/91 868 5/ 5/91 862 5/ 6/91 859 5/ 7/91 86O 5/ 8/91 838 5/ 9/91 787 5/10/91 859 5/11/91 859 5/12/91 859 5/13/91 858 5/14/91 860 5/15/91 859 5/16/91 857 5/17/91 852 5/18/91 851 5/19/91 854 5/28/91 821 5/21/91 616 5/22/91 653 5/23/91 701 5/24/91 718 5/25/91 709 5/26/91 829 5/27/91 864 5/28/91 864 5/29/91 862 5/38/91 859 5/31/91 860

p OPERATING DATA REPORT DOCVET NO 50 389 DATE ggn 1 8 $ 9t COMPLETED BY Ji iJ+ BREEN TEI EPHONE 407/465/3550 QPERATTNG STATUS 1 . UNXT NAME l ST. LUCIF lJNIT 2

2. REPORTXNG PERIOD f MAY 1991 3i LXCENSED THERMAL POHER (MHT): 2700 NAMEPLATE RATING (GROSS MHE) l 850 5i DESXGN ELECTRICAL RATING (NET MHE): 838 6i MAXIMUM DEPENDABLE CAPACXTY (GROSS MNE) l 882 7r MAXIMUM DEPENDABLE CAPACITY (NET MHE) l 839 Bi IF CH*NGES OCCUR IN CAP*CITY RATXNGS (XTEMS NUMBER 3 THROUGH 7)

SXNCE LAST REPORT r GIVE REASONS l POWER LEVEL To HHICH RESTRICTED ~ XF ANY (NET MME) 10'EASONS FOR RESTRICTIQNSr XF ANY'ONTHLY

- YTD- CUMULATIVE

11. HOURS XN REPORT PERIOD l 744 3623 68496.0 12'UMBER QF HOURS REACTOR HAS CRITXCAL 744.0 3623+0 58483+3
13. RE*CTQR RESERVE SHUTDOHN HOURS Oi0 Oi0 Or0 14, HOURS GENERATOR ON-l INE 744ie 3623i0 57467.3 15'NIT RESERVE SHUTDOWN'HOURS Or0 0' 0 i0
16. GROSS THERMAL ENERGY GENERATED (MHH) 1935709 9699100 150488181 17'ROSS ELECTRICAL ENERGY GENERATED (MHH) 646280 3273880 50170800 18'ET ELECTRXCAL ENERGY GENERATED (MWH) 612337 3108685 47442788 83.9 100i0
19. UNIT SERVICE FACTOR '> ~

100 i 0

28. UNXT A VAILABXLXTYFACTOR 100.0 100+0 83+9
21. CAPACITY FACTOR (USING MDC NET) 98+1 102i3 84.1 22, CAPACITY FACTOR (USING DER NET) 99+2 103' 84.2 23m UNIT FORCED OUTAGE RATE OiO OiO 5i6 24'HUTDOWNS SCHEDULED OVER NEXT 6 MONTHS 25, XF SHUT DOWN AT END QF REPORT PERXODr ESTIM*TED DATE OF STARTUP:

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-38 UNIT NAME ST L CIEUNIT2 DATE JUN Z3 <99' COMPLETED BY J. BREEN TELEPHONE 40 465-3550 REPORT MONTH MAY 1991 No. Date Type Duration (Hours)

Reason'ethod of Shutting Reactor'icensee Event Report System Code'omponent Code'ause & Corrective Action to Down ¹ Prevent Recurrence 910520 0.0 B N/A HF XXXXXX Unit 2 downpowered for waterbox cleaning.

Reason Method ~bit G - Instructions for A - Etptipmcnt failure (explain) 1 - Manual Preparation of Data Enny B - Maintenance or Test 2 - Manual Scram Sheets Licensee Event Report C - Refueling 3 - Autcinatic Scnun (LER) File (NUREG-0161)

D - Restdatory rcricion 4 - Continued E - Operator Training 4t'. License Emnination 5 - Load Reduction F - Admmistrative 9 - Other (Exphun) Exhil)it 1 - Same Source G - Operational Error (Expalin)

H - Other (Explam)

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SUMMARY

OF OPERATING EXPERIENCE DOCKET NO COMPLETED BY TELEPHONE

~R 50-389 J.J.

407 Breen 465-3550 REPORT MONTH MAY 1991 On May 20, 1991, until May 25, 1991, Unit 2 reduced power for waterbox cleaning. On May 27, 1991, Unit 2 was at 100% power and remained there for the rest of the month.

In accordance with the requirements of Technical Specification 6.9.1.6, there were no challenges to the PORVs or safety valves during the report period.

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