ML20154C143

Monthly Operating Repts for Aug 1988 for Point Beach Nuclear Plant Units 1 & 2

ML20154C143
Person / Time
Site:	Point Beach
Issue date:	08/31/1988
From:	Fay C, Krause C WISCONSIN ELECTRIC POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CON-NRC-88-083, CON-NRC-88-83 VPNPD-88-453, NUDOCS 8809140248
Download: ML20154C143 (10)

Text

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OPERATING DATA REPORT

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DOCKET NO. 50-266 DATE September 7, 1988 l

COMPLETED BY C. W. KRAUSE l

TELFPHONE 414 221 2001 l

OPERATING STATUS

1. UNIT NAME:

POINT BEACH NUCLEAR PLANT UNIT 1

. NOTES

2. REPORTING PERIOD:

AUGUST 1988

3. LICENSED THERMAL POWER (MWT):

1518.

4

4. NAMEPLATE RATING (SROSS MWE):

523.8

5. DESISN ELECTRICAL RATING (NET MWE):

497.

6. MAXIMUM DEPENDABLE CAPACITY (6ROSS MWE):

509.

7. MAXIMUM DEPENDABLE CAPACITY (NET MWE):

485.

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IF CHANGE 3 OCCUR IN CAPACITY RATINGS (ITEMS NUMBER 3 THROU6H 7) SINCE LAST REPORT, SIVE REASONS:

NOT APPLICABLE

9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MWE): NOT APPLICABLE

10. REASONS FOR RESTRICTIONS, (IF ANY):

NOT APPLICABLE THIS MONTH YR TO DATE CUMULATIVE

11. HOURS IN REPORTING PERIOD 744 5,855 156,215

12. NUMBER OF HOURS REACTOR WAS CRITICAL 744.0 4,918.7 127,696.5

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 652.7

14. HOURS GENERATOR ON LINE 744.0 4,858.8 124,903.5

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.6 837.9

16. GROSS THERMAL ENERGY SENERATED (MWH) 1,126,721 7,285,045 172,912,099

17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 385,140 2,489,210 58,312,580

18. NET ELECTRICAL ENER6Y SENERATED (MWH) 368,634 2,3B0,149 55,533,668

19. UNIT SERVICE FACTOR 100.0 83.0 80.0

20. UNIT AVAILABILITY FACTOR 100.0 83.0 80.5

21. UNIT CAPACITY FACTOR (USING MDC NET) 102.2 83.8 72.9

22. UNIT CAPACITY FACTOR (USING DER NET) 99.7 81.8 71.5

23. UNIT FORCED OUTAGE RATE 0.0 0.0 2.0

24. SHUTDOWNS SCHEDULED OVER NEIT 6 MONTHS (TYPE, DATE, AND DURATION OF EACH):

NONE

25. IF SHUTDOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP:

NOT SHUTDOWN DATA REPORTED AND FACTORS CALCULATED AS REQUESTED IN NRC LETTER DATED SEPTEMBER 22, 1977 8809140298 880831 PDR ADOCK 05000266 F:

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DOCKET NO.

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UNIT 'r4AME Point Beach, Unit 1 DATE September 7, 1988 COMPLETED BY C.

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TELEPHONE 414/221-2001 1

AVERAGE DAILY UNIT POWER LEVEL MONTH AUGUST 1988 AVERAGE AVERAGE AVERAGE DAILY DAILY DAILY POWER LEVEL POWER LEVEL POWER LEVEL

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497 11 499 21 484 2

497 12 499 22 488 3

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r NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE Docket No.

50-266 Unit Name Point Beach Unit 1 Date September 7, 1988 Completed By C. W. Krause Telephone 414/221-2001 Unit L operated at full power capacity of 495 MWe net throughout the period with no significant load reductions.

The unit surpassed 58 billion kW-hrs on August 6, 1988.

On August 24, 1988, the pressurizer liquid space - containment isolation valve 1-953 was discovered in mid-position.

The first occurrence of this valve problem was witnessed on July 12, 1988.

Once agrin, inspections of the valve and the operator failed to identify the cause of problem.

The valve was extensively cycle tested.

After testing, the valve experienced leakage, not evident previous to the tests.

Valve 1-953 was manually isolated and further investigations are being conducted.

A supplement to LER 88-006 is being drafted to document the circumstances of this event.

During a review of the control board design, a deficiency in the safety injection system circuitry was identified.

Both trains of safety injection signals are wired through a single "safety injection block" switch.

The failure of this switch could potentially cause the loss of both safeguards trains.

Problems with the switch have not been experienced.

A modification to add a second switch and separate the two trains is underway.

The circumstances regarding this evaluation are to be documented in LER 88-007.

During a review of the Final Safety Analysis Report, Steam Line Rupture Accident, an unanalyzed condition was identified.

If an in-containment steam line break occurs with a coincidental failure of one train of feedwater isolation, feedwater would be added to the steam generators via the condensate or heater drain tank pumps.

This feedwater addition would cause an increase in containment pressure, above that analyzed in the FSAR.

Further evaluations are being conducted and the results will be documented in LER 88-008.

On August 31, 1988, following its scheduled surveillance test, the G01 emergency diesel experienced a failure to shutdown during the nonnal cooldown.

Troubleshooting and further tests could neither identify a failed component nor duplicate the abnormal i

condition.

Investigations are ongoing and Licensee Event Report 88-009 or a letter will be submitted to document the circumstances of the event.

I-Other safety-related maintenance included the ten-year overhaul of service water pump P32F; the replacement of safety injection flow transmitters FT-924 and FT-925, due to post-operation zero shifts; and the seal replacement on spent fuel recirculating pump P12A.

The blowdown evaporator reboiler tube bundle replacement modification is 98% complete.

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OPERATING DATA REPORT DOCKET NO. 50-301 j

DATE September 7, 1988 COMPLETED BY C. W. KRAUSE 1

TELEPHONE 414 221 2001 OPERATINS STATUS

1. UNIT NAME:

POINT BEACH NUCLEAR PLANT UNIT 2

. NOTES

2. REPORTING PERIOD:

AUSUST 1988

3. LICENSED THERMAL POWER (MWT):

1518.

4. NAMEPLATE RATING (6ROSS MWE):

523.8

5. DESIGN ELECTRICAL RATINS (NET MWE):

497.

6. MAIIMUM DEPENDABLE CAPACITY (GROSS MWE):

509.

7. MAXIMUM DEPENDABLE CAPACITY (NET MWE):

485.

8. IF CHANSES OCCUR IN CAPACITY RATINBS (ITEMS NUMBER 3 THROUGH 7) SINCE LAST REPORT, GIVE REASONS:

NOT APPLICABLE

9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MWE):

NOT APPLICABLE

10. REASONS FOR RESTRICTIONS, (IF ANY):

NOT APPLICABLE THIS MONTH YR TO DATE CUMULATIVE

11. HOURS IN REPORTING PERIOD 744 5,855 141,000 1

12. NUMBER OF HOURS REACTOR WAS CRITICAL 744.0 5,835.6 124,230.0 l

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 1.1 216.1

14. HOURS GENERATOR ON LINE 744.0 5,792.2 122,262.3 4

15. UNIT RESERVE SHUTDOWN HOURS 0.0 5.0 297.4

16. GROSS THERMAL ENERGY GENERATED (MWH) 1,129,392 8,729,665 173,300,260

17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 386,780 2,985,650 58,765,870 l

18. NET ELECTRICAL ENERGY GENERATED (MWH) 369,654 2,853,809 55,989,552

19. UNIT SERVICE FACTOR 100.0 98.9 86.7 l

20. UNIT AVAILABILITY FACTOR 100.0 99.0 86.9 i

21. UNIT CAPACITY FACTOR (USING MDC NET) 102.4 100.5 81.1

22. UNIT CAPACITY FACTOR (UCING DER NET) 100.0 98.1 79.9

23. UNIT FORCED DUTAGE RATE 0.0 0.4 1.2 I

24. SHUTDOWNS SCHEDULED DVER NEIT 6 MONTHS (TYPE, DATE, AND DURATION OF EACH):

Seven-week refueling and maintenance outage scheduled to begin October 8, 1988.

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25. IF SHUTDOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP:

h0T SHUTDOWN DATA REPORTED AND FACTORS CALCULATED AS REQUESTED IN NRC LETTER DATED SEPTEMBER 22, 1977 4

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DOCKET NO.

50-301 UNIT NAME Point Beach, Unit 2-DATE September 7, 1988 COMPLETED BY C. W.

Krause TELEPHONE 414/221-2001 AVERAGE DAILY UNIT POWER LEVEL MONTH AUGUST-1988 AVERAGE AVERAGE AVERAGE DAILY DAILY DAILY POWER LEVEL POWER. LEVEL POWER LEVEL DAY MWe NET DAY MWe NET DAY MWe NET 1

500 11 498 21 490 2

500 12 498 22 485 3

501 13 500 23 489 4

500 14 500 24 490 5

500 15 498 25 490 6

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SUMMARY

OF OPERATING EXPERIENCE Docket No.

50-301 Unit Name Point Beach Unit 2 Date September 7, 1988 Completed By C. W. Krause Telephone 414/221-2001 Unit 2 operated at full power capacity of approximately 497 MWe net throughout the period with no significant load reductions.

Safety-related maintenance included the replacement of nuclear instrument power range channel 41 high voltage power supply and the replacement of safety injection flow transmitters FT-324 and FT-925 due to post-operation zero shifts.

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Wisconsin Electnc macwmr 231 W MICHIG AN,P O. BOX 2046, MILWAUKEE, Wl 53201 (414)221-2345 VPNPD-88-453 NRC-88-083 September 8, 1988 U.

S. NUCLEAR REGULATORY COMMISSION Document Control Desk Mail Station Pl-137 Washington, D. C.

20555 Gentlemen:

DOCKETS 50-266 AND 50-301 MONTHLY OPERATING REPORTS POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 Attached are monthly operating reports for Units 1 and 2, Point Beach Nuclear Plant, for the calendar month of August 1988.

Very trul

yours, (Ij-a ft C. W. Fay Vice President Nuclear Power Attachments Copics to R.

S.

Cullen, PSCW NRC Regional Administrator, Region III NRC Resident Inspector

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