ML20133M175

Monthly Operating Rept for Dec 1996 for Oyster Creek Nuclear Generating Station

ML20133M175
Person / Time
Site:	Oyster Creek
Issue date:	12/31/1996
From:	Dougher J, Egan D, Roche M GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
6730-97-2006, NUDOCS 9701220289
Download: ML20133M175 (7)

Text

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8 GPU Nuclear,Inc.

j g U S. Route #9 South Forked ve NJ 731 0388 Tei 609-9714000 January 14, 1997 6730-97-2006 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555

SUBJECT:

Oyster Creek Nuclear Generating Station Docket No. 50-219 Monthly Operating Report - December,1996 In accordance with the Oyster Creek Nuclear Generating Station Operating License No. DPR-16, Appendix A, Section 6.9.1, enclosed are two (2) copies of the Monthly Operating Data (Gray Book information) for the Oyster Creek Nuclear Generating Station.

If you should have any questions, please contact Ms. Brenda DeMerchant, Oyster Creek Regulatory Affairs Engineer, at 609-971-4642.

Very truly yours, Q Michael B. Roche Vice President & Director Oyster Creek MBR/BDeM/gl 220036 k

Enclosures -

cc: ' Administrator, Region I (2 copies) b NRC Project Manager NRC Resident inspector jk

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SUMMARY

DECEMBER,1996 During the month, the plant generated 476,495 MWh net electric which was 103.5% ofits MDC rated capacity, i

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MONTHLY OPERATING REPORT Licensee Event Reports - December.1996 I

i LER 96-012 was filed December 11.'1996 On November 12,1996, it was discovered that a condition outside the seismically qualified design bases existed for the 4160 vac switchgear buses IC and ID due to having the EC and ED Tie -

circuit breakers racked out and resting on the floor inside the cubicle. This condition has been present throughout the plant's operating history. The cause of this condition is previous seismic

. qualification walkdowns failed to identify this problem. ,

The safety significance of this condition is minimal since approved plant operating procedures are  ;

. in place to mitigate the consequences of a station blackout combined with the low probability of a seismic event.

Corrective actions include removing the tie breakers from the switchgear cubicle, procedural changes to ensure the 4160 vac circuit breakers were not left racked out in the switchgear, and evaluation of ,

methods for securing the circuit breaker in the cubicle.

LER 96-013 was filed December 12.1996 l 1

On November 13,1996, it was discovered that mounting bolts were missing from a seismic <

restraint frame around Motor Control Center (MCC) DC-2. The MCC was declared inoperable i and a Technical Specification LCO was entered. The four missing bolts were reinstalled and the  ;

MCC subsequently declared operable.

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This condition was caused by personnel error. The seismic restraint was disassembled to support recent modification work. A final MCC walkdown at the completion of the work overlooked the l bolts not being installed.

1 The safety significance of this occurrence is minimal since the equipment powered by this MCC is not relied upon to prevent or mitigate the consequences of an accident.

Required Reading will be issued andjob orders provided with specific instructions to prevent recurrence.

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4 Oyster Creek Station #1 l Docket No. 50-219 ,

Refueling Information - December.1996 Name of Facility: Oyster Creek Station #1 Scheduled date for next refueling shutdown: September 1998 i

Scheduled date for restart following refueling: October 1998 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment? No 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, new operating procedures:

1. General Electric Fuel Assemblies - Fuel design and performance analysis methods have been approved by the NRC.

i The Number of fuel assemblies: (a) in the core = 560 (b) in the spent fuel storage pool = 2236 (c) in the new fuel storage vault = 8 4

The present licensed spent fuel pool storage capacity and the size of any increase in licensed

storage capacity that has been requested or is planned, in number of fuel assemblies

Present Licensed Capacity: 2645 The projected date of the last refueling that can be discharged to the spent fuel pool assuming the l present licensed capacity:

Full core discharge capacity to the spent fuel pool was lost after the 1996 refueling outage.

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AVERAGE DAILY POWER LEVEL 1 NET MWe DOC KET # . . . . . . . . . . . . .

50-219 U NIT . . . . . . . . . . . . . . . . Oyster Creek #1 REPORT DATE . . . . . . . . . . 1/6/97 i COMPILED BY. . . . . . . . . . . John D. Dougher j TELEPHONE #. . . . . . . . . . .

. (609) 971- 2130 1

Month: December,1996 i

DAY MW DAY MW 1 641 16 639 1

2 640 17 640 3 640 18 638

. 4 640 19 640 5 639 20 642 6 642 21 641 7 640 22 642 I 8 641 23 636 9 642 24 642 10 639 26 642 11 640 26 639 1 12 638 27 645 13 638 28 643 14 639 29 641 i

' 1 15 640 30 642 31 644 i

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.. 1 OPERATING DATA REPORT  :

OPERATING STATUS - i

1. Docket: 50-219 l

2. Reporting Period: December,1996 l

3. . Utility Contact ' John G. Dougher (609)-971-2130

4. Licensed Thermal Power (MWt): 1930

5. Nameplate Rating (Gross MWe): 687.5 x 0.8 = 550 {

6. Design Electrical Rating (Net MWe) - 650 l 1

7. Maximum Dependable Capacity (Gross MWe): 641 l

8. Maximum Dependable _ Capacity (Net MWe): 619

9. If Changes Occur Above Since Last Report, Give Reasons: None i

10. Power livel to Which Restricted, if Any (Net MWe): None

11. Reason For Restriction, If Any: None Month Year Cumulative

12. Report Period Hours 744.0 8784.0 236904.0

13. Hours RX Critical 744.0 7255.9 161588.8

14. RX Reserve Shutdown Hours 0.0 0.0 918.2

15. Hours Generator On-Line 744.0 7107.1 157917.8

16. UT Reserve Shutdown Hours 0.0 0.0 0.0

17. Gross Thermal Energy (MWH) 1433830 13394587 273914081

18. Gross Electric Energy (MWH) 493981 4511692 91929267

19. Net Electric Energy (MWH) 476495 4339401 88208566

20. UT Service Factor 100.0 80.9 66.7

21. UT Available Factor 100.0 80.9 66.7

22. UT Capacity Factor (MDC Net) 103.5 79.8 60.7

23. UT Capacity Factor (DER Net) 98.5 76.0 57.3 )

24. UT Forced Outage Rate 0.0 7.8 9.8

25. Forced Outage Hours 0.0 $99.2 17137.4

' 26. Shutdowns Scheduled Over Next 6 Months (Type, Date, Duration) None

27. Currently Shutdown, Estimated Startup Date: N/A i

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UNIT SHUTDOWNS AND POWER REDUCTIONS ,

DOCKET NO: 50-219 UNIT NAME: Ossier Creek DATE- January 9.1997 ,

COMPLTD BY: David M. Egan TELEPHONE: 609/971-4818 REPORT MONTH December 1996  :

TYPE METHOD OF SHUTTING CORRECTIVE ACTIONS / COMMENTS No. DATE F: Forred DURATION REASON DOWN THE REACTOR OR S: Scheduled (hours) (1) REDUCING PGHIR (2)

There were no shutdown or significant power reductions during this reporting period.

SUMMARY

(1) REASON (2) METHOD

a. Equipment Failure (Explain) e. Operator Training & Lic Exam 1. Manual

b. MaintenanceorTest f. Administratist 2. Manual Scram

c. Refueling g. Operational Error (Explain) 3. Automatic Scram

d. Regulatory Restriction h. Other(Explain) 4. Other(Explain) 4

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