ML20100G510

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

ML20100G510
Person / Time
Site:	Oyster Creek
Issue date:	01/31/1996
From:	Edelmann P, Egan D, Roche M GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
6730-96-2059, NUDOCS 9602230214
Download: ML20100G510 (7)

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A, GPU Nuclear Corporation N@Igf Post Office Box 388 Route 9 South Forked River. New Jersey 08731-0388 609 971-4000 i Writer's Direct Dial Number:

February 15, 1996 6730-96-2059 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 - January,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,

} 0f Michael B. Roche Vice President & Director Oyster Creek MBR/BDeM/gl Enclosures cc: Administrator, Region I (2 copies)

NRC Project Manager NRC Resident inspector 22nnn 9602230214 960131 PDR ADOCK 05000219 PDR R

l /7 GPU Nuclear Corporation is a subsidiary of General Pubhc Utikties Corporation f k

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SUMMARY

l JANUARY,1996 l Oyster Creek entered January operating at 98% power due to the second stage reheaters being out of j service. The second stage reheaters were out of service because ofinstability in the reheater drain  !

system caused by failure of the auxiliary flash tank level control valve, V-4-103. On January 6 at 0304, the plant was shutdown to repair V-4-103. On January 8 at 1310, the plant was retumed to the  ;

grid. The plant operated at full power for the remainder of the reporting period. j i

t The plant generated 426,898 MWh net electric which was 92.7% ofits MDC rated capacity for the l

month. ,

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l LICENSEE EVENT REPORTS FILED DURING JANUARY.1996 i

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. LER 95-008:

i On 12/18/95 at 0437 hours0.00506 days <br />0.121 hours <br />7.225529e-4 weeks <br />1.662785e-4 months <br /> a reactor scram and tuibine trip occurred due to high reactor pressure. The cause of the event was a generator runback due to high stator cooling water temperature. The elevated cooling water temperature was caused by the failure of the system temperature control valve to properly regulate cooling water temperature. When  !

cooling water temperature reached the high tempemture setpoint of 89 C, the generator  !

protection system initiated a turbine generator runback. The closing of the turbine control  !

valves beyond the limit of the bypass valves reduced the mass flow capability of the turbine l control system and reactor pressure increased. When reactor pressure reached the high  ;

pressun: scram setpoint of 1045 psig, a reactor scram occurred as designed. Reactor power i peaked at 108.5% power during the pressure transient. After the scram, reactor water level l

dropped below the low level scram setpoint (139.48 in. TAF) to a level of 97 in. TAF and  !

then was recovered in accordance with plant procedures. The faulty temperature control valve was repaired and the stator cooling system was returned to opemtional status.

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Oyster Creek Station #1 Docket No. 50-219 REFUELING INFORMATION - JANUARY,1997 Name of Facility: Oyster Creek Station #1 Scheduled date for next refueling shutdown:

September,1996 Scheduled date for restart following refueling: Currently projected for November,1996 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?

No .

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Important licensing considerations associated with refueling, e.g., new or different fuel design or supp!ier, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures: 1

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

The number of fuel assemblies (a) in the core = 560 (b) in the spent fuel storage pool = 2048 (c) in dry storage = 24 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 present licensed capacity:

Full core discharge capacity to ths, spent fuel pool will be available through the 1996 refueling outage.

(pMoes-963414-96 cpdata.cor nport : 1 )

AVERAGE DAILY POWER LEVEL NET MWe DOCKET # . . . . . . . . . . . . . 50-219 UNIT . . . . . . . . . . . . . . . . Oyster Creek #1 REPORT DATE . . . . . . . . . . 2/1/96 COMPILED BY. . . . . . . . . . . Paul G. Edelmann j TELEPHONE #........... (609) 971- 4097 i

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i Month: January,1996 j i

DAY MW DAY MW 4 i 1 633 16 639 2 632 17 639 J

3 630 18 641 l 1 4 4 633 19 640 i i'

5 598 20 640 ,

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. 6 11 21 640 i 7 0 22 639 )

l 8 112 23 641 l

! 9 481 24 641

! 10 637 25 638 j 11 636 26 639 j 12 639 27 640 13 639 28 638

14 638 29 641 15 639 30 640 2

31 639 i

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OPERATIN3 DATA REPORT ,

l OPERATING STATUS )

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1. DOCKET: 50-219

2. REPORTING PERIOD: Jan-96 l

l 3. UTILITY CONTACT: Paul G. Edelmann (609) 971- 4097

{ 4. LICENSED THERMAL POWER (MWt): 1930 l 5. NAMEPLATE RATING (GROSS MWe): 687.5 x 0.8 = 550

6. DESIGN ELECTRICAL RATING (NET MWe): 650 1

7. MAXIMUM DEPENDABLE CAPACITY (GROSS MWe): 641

8. MAXIMUM DEPENDABLE CAPACITY (NET MWe): 619

9. IF CHANGES OCCUR ABOVE SINCE LAST REPORT, GIVE REASONS:

NONE

10. POWER LEVEL TO WHICH RESTRICTED,IF ANY (NET MWe):

NONE

11. REASON FOR RESTRICTION,IF ANY:

NONE MONTH YEAR CUMULATIVE 1

12. REPORT PERIOD HOURS 744.0 744.0 228864.0 l

13. HOURS RX CRITICAL 708.1 708.1 155041.0

14. RX RESERVE SHUTDOWN HRS 0.0 0.0 918.2

15. HRS GENERATOR ON-LINE 685.9 685.9 151496.6

16. UT RESERVE SHTDWN HRS 0.0 0.0 0.0

17. GROSS THERM ENERGY (MWH) 1295563 1295563 261815056

18. GROSS ELEC ENERGY (MWH) 443313 443313 87860888

19. NET ELEC ENERGY (MWH) 426898 426898 84296063

20. UT SERVICE FACTOR 92.2 92.2 66.2

21. UT AVAllFACTOR 92.2 92.2 66.2

22. UT CAP FACTOR (MDC NET) 92.7 92.7 60.1

23. UT CAP FACTOR (DER NET) 88.3 88.3 56.7

24. UT FORCED OUTAGE RATE 7.8 7.8 9.9

25. FORCED OUTAGE HRS 58.1 58.1 16596.3

26. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE,DATE, DURATION):

NONE

27. IF CURRENTLY SHUTDOWN ESTIMATED STARTUP DATE: N/A

3 UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO: 50-219 UNIT NAME: Ovster Creek DATE: February 13. 1996 COMPLT'D BY: David M. Ecan TELEPHONE: 971-4818 REPORT MONTH: January 1996 TYPE METHOD OF CORRECTIVE No. DATE F: Forced DURATION REASON (1) SHUTTING DOWN ACTIONS /COtetENTS S: Scheduled (hours) THE REAC"rOR OR REDUCING POWER (2) 1 01/06/96 F 58.1 b 1 The plant was manually shut down to repair auxiliary flash tank level control valve.

SUMMARY

(1) REASON (2) METHOD

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

b. Maintenance or Test f. Administrative 2. Manual Scram

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

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

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