ML17354A831

Monthly Operating Repts for Feb 1998 for Turkey Point,Units 3 & 4.W/980311 Ltr

ML17354A831
Person / Time
Site:	Turkey Point
Issue date:	02/28/1998
From:	Hovey R, Mowrey C FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
L-98-070, L-98-70, NUDOCS 9803180014
Download: ML17354A831 (15)

Text

REGULA Y INFORMATION DISTRIBUTI SYSTEM (RIDS)

ACCESSION NBR:9803180014 DOC.DATE: 98/02/28 NOTARIZED: NO DOCKET FACXL:50-250 Turkey Point Plant, Unit 3, Florida Power and Light C 05000250 50--251 Turkey Point Plant, Unit 4, Florida Power and Light C 05000251 AUTH. NAME AUTHOR AFFILIATION MOWREY,C.L. Florida Power 6 Light Co.

HOVEY,R.J. Florida Power 8 Light Co.

RECXP.NAME RECIPIENT AFFILIATION

SUBJECT:

Monthly operating repts for Feb 1998 for Turkey Point, Units 3 6 4.W/980311 ltr.

DISTRIBUTION CODE: IE24D COPIES RECEXVED:LTR ENCL SIZE:

TITLE: Monthly Operating Report (per Tech Specs)

E NOTES:

RECIPIENT COPIES RECIPIENT COPXES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL 0 PD2-3 PD 1 1 CROTEAU,R 1 1 INTERNAL: AEOD/SPD/RRAB 1 1 FIL R 1 1 OC/DBA/PAD 1 1 GNgsswelh8Ã%+isAPcs 1 1 EXTERNAL: LITCO BRYCE,J H 1 1 NOAC 1 1 NRC PDR 1 1 D

N NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 TOTAL NUMBER OF COPIES REQUIRED: LTTR 9 ENCL 9

PAIL.

'AR U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555 11 L-98-070 10 CFR 550.36 1998 Re: Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Monthl 0 eratin Re ort In accordance with the requirements of Turkey Point Units 3 and 4 Technical Specification 6.9.1.5, and the guidance of Generic Letter 97-02, attached are the February 1998 Operating Status and Summary of Operating Experience Reports for Turkey Point Units 3 and 4.

Very truly yours, R. J. Hovey Vice President Turkey Point Plant CLM Attachments cc: Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, Turkey Point Plant 9803i800i4 980228 05000250 PDR ADQCK R

PDR Illlllllllllllllllllllllllllllllllllllll an FPL Group company

AVERAGE DAILYUNIT POWER LEVEL DOCKET NO. 50-250 DN: k I March 5 1998 I'ATE:

CDMYLBTBDBY: ~C.

TB HDNB:

M! D MDN H~b DAY AVERAGE DAILY POWER LEVEL (MWe-Net) 2/1/98 730 2/2/98 727 2/3/98 731 2/4/98 733 2/5/98 736 2/6/98 736 2/7/98 738 2/8/98 740 2/9/98 740 2/1 0/98 735 2/11/98 735 2/12/98 733 2/1 3/98 729 2/14/98 727 2/15/98 731 2/16/98 124 2/17/98 0 2/1 8/98 0 2/1 9/98 0 2/20/98 529 2/21/98 627 2/22/98 650 2/23/98 704 2/24/98 706 2/25/98 6?7 2/26/98 726 2/27/98 725 2/28/98 720

DOCKET NO. 50-250 UNIT NAME TURKEY POINT UNIT 3 DATE March 5 1998 COMPLETED BY C. L. Mowre TELEPHONE REPORTING PERIOD Februa 1998 (Month/Year)

1. Design Electrical Rating (MWe-Net) 720

2. Maximum Dependable Capacity (MWe-Net) 693 MONTH -YTD- CUMULATIVE

3. Number of Hours Reactor Was Critical 591.5 1335.5 154453.3

4. Number of Hours Generator Was On Line 582.8 1326.8 152285.7

5. Unit Reserve Shutdown Hours 0.0 0.0 121.8

6. Net Electrical Energy (MWH) 411408.0 951942.0 97364498.0

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SUMMARY

OF OPERATING EXPERIENCE DOCKET NO. 50-250 UNIT: I I H DATE: March 5 1998 COMP:

TELEPHONE C.

IUIO ONH I Unit 3 operated at essentially 100% power until February 16. At 0438 hours0.00507 days <br />0.122 hours <br />7.242063e-4 weeks <br />1.66659e-4 months <br />, the Unit 3 turbine reheat, intercept, and control valves closed due to a loss of turbine control oil pressure. The reactor was manually tripped subsequent to high steam flow alarms, automatic control rod insertion, and loss of electrical load. During the event, both pressurizer Power Operated Relief Valves (PORVs) momentarily cycled, as expected for a loss of secondary load. A misaligned auxiliary governor test lever was bumped by a technician, causing control oil pressure to be dumped, and allowing the turbine valves to close.

Following the reactor trip a steam leak from the secondary system was discovered, caused by the failure of a 2 inch pipe upstream of a steam trap, on the Unit 4 AFW Train 2 steam supply line.

To isolate the steam leak, AFW Train 2 was secured. Despite the steam leak, the AFW system provided adequate feedwater flow to the steam generators for the duration of the event.

The loss of oil pressure was due to a misaligned test lever which caused the device to be sensitive to very small movement or minor bumping. The AFW steam leak was due to outside diameter (OD) corrosion resulting from water trapped under insulation.

The test lever has been repaired. All of the AFW steam piping has been pressure tested, and all of the piping susceptible to OD corrosion has been inspected. About 50 feet of 2-inch AFW steam piping (branch lines) has been replaced.

Unit 3 was returned to power on February 19, and remained above 80% power for the remainder of the month.

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-250 UNIT NAME: T I ~ I 6 DATE: March 5 1998 COMPLETED BY ~C TELEPHONE: 305 246-6204 RR ORT'ONTN~PP No. Date Duration Reason* Hethod of Corrective Action Reactor'ause t Hours) Shutting CctathentS Down 1060 2/16/98 89.2 Loss of Turbine Control Oil Pressure: Aux. Governor test lever repaired Steam Leak in Auxiliary Feedwater Steam Supply Piping:

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AVERAGE DAILYUNIT POWER LEVEL DOCKET NO. 50-251 DN: i PP DATE: March 5 1998 COMPLHYBDBY: C.L.

YBLBPHONB:

RHPORY MDNYH b DAY AVERAGE DAILY POWER LEVEL (MWe-Net) 2/1/98 729 2/2/98 729 2/3/98 732 2/4/98 733 2/5/98 736 2/6/98 736 2/7/98 736 2/8/98 738 2/9/98 738 2/1 0/98 735 2/1 1/98 735 2/12/98 731 2/1 3/98 728 2/14/98 727

'/1 5/98 731 2/16/98 728 2/17/98 718 2/1 8/98 716 2/1 9/98 719 2/20/98 717 2/21/98 719 2/22/98 723 2/23/98 722 2/24/98 730 2/25/98 731 2/26/98 727 2/27/98 726 2/28/98 719

OPERATING DATA REPORT DOCKET NO. 50-251 UNIT NAME TURKEY POINT UNIT 4 DATE March 5 1998 COMPLETED BY TELEPHONE (Month/Year)

1. Design Electrical Rating (MWe-Net) 720

2. Maximum Dependable Capacity (MWe-Net) 693 MONTH -YTD- CUMULATIVE

3. Number of Hours Reactor Was Critical 672.0 1416.0 150723.5

4. Number of Hours Generator Was On Line 672.0 1416.0 146392.5

5. Unit Reserve Shutdown Hours 0.0 0.0 577.2 I'. 489360.0 1015319.0 94506956.0 Net Electrical Energy (MWH)

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-251 IINITNLLM I I 66 DATE: March 5 1998 OOMPLHTEOHY: O.

TELEPHONE: N006 6 66--6 00 REPORT MONTH ~00 No. Type'uration Reason>> Nethod & Corrective Action to (Hours) of Prevent Recurrence Reactor'ause Shutting Down N/A N/A N/A N/A N/A N/A F - Forced Reason Hethod

- Scheduled A - Equipment S

B - MaintenanceFailure or Test 1 Nanual 2 Nanual Scram C - Refueling 3 Automat)c Scram D - Regulatory restriction 4 - Continued E - Operator Training r 5 - Load Reduction License Examination 9 Other (Explain)

F - Administrative G - Operational Error (Explain)

H - Other (Explain)

SUMMARY

OF OPERATING EXPERIENCE DOCKET NO. 50-251 UNIT: Turke Point P4 DATE: March 5 1998 COMPLETE BY: C.

TELEPHONE: (~6-6 OT DNTH b Unit 4 operated at essentially 100% power for the entire month.

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