ML20134M976

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

ML20134M976
Person / Time
Site:	Oyster Creek
Issue date:	10/31/1996
From:	Egan D, Nash R, Roche M GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
6730-96-2339, NUDOCS 9611260109
Download: ML20134M976 (7)

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{ GPU Nuclear, Inc.

( U.S. Route #9 South NUCLEAR Post Office Box 388

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Forked River, NJ 08731-0388 Tel 609-9714000 November 15, 1996 6730-96-2339 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 - October,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, .

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Michael B. Roche Vice President & Director Oyster Creek MBR/BDeM/gl -

Enclosures ,

i ec: Administrator, Region I (2 copies)

NRC Project Manager ,

NRC Resident Inspector

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9611260109 961031 I PDR ADOCK 05000219~

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SUMMARY

October.1996

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When October began, Oyster Creek was in its 16th. refueling outage. On October 20,1996, the

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plant began startup, but was forced to shut down due to an excessive steam leak from V-1-312.  ;

After repairing the valve, the plant started up and the generator was placed on line at 1957 on  !

October 23,1996, officially ending 16R. On October 25,1996, plant operators manually '

scrammed the reactor in response to a generator runback. The plant remained shutdown for the j remainder of October.  :

j The plant generated 13,273 net MWii during the month and achieved an MDC net capacity  :

factor of 2.9%. ,

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! MONTHLY OPERATING REPORT L Licensee Event Renorts - October.1996 i i

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j. LER 96-007 was filed October 4,1996. i i

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On September 4,1996, the A North Main Condenser was being placed into backwash mode for routine cleaning. The A North inlet valve did not close resulting in a decrease in condenser i vacuum. A low vacuum reactor scram occurred as designed. A pressure increase occurred as L expected and two of the five Electromatic Relief Valves actuated to relieve pressure until the .  ;

j ccedenser bypass valves opened. The root cause of the event was the valve motor controller  ;

which did not close the valve on demand. -

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functioned as designed.  :

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Immediate corrective action was taken to stabilize the plant and subsequently place the reactor in the cold shutdown mode. Prior to restart from the current 16R refueling outage, corrective -

actions will be taken to repair the controller and evaluate the deficiency for potential generic l.

concerns; I

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. l Oyster Creek Station #1 i Docket No. 50-219 )

Ref ueling Information - October.1996 Name of Facility: Oyster Creek Station #1 Scheduled date for next refueling shutdown: September 1998 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.

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 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 the spent fuel pool was lost after the 1996 refueling outage.

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j AVERAGE DAILY POWER LEVEL d

NET MWe i

DOC K ET # . . . . . . . . . . . . . 50-219

, UNIT................ Oyster Creek #1 REPORT DATE . . . . . . . . . . 11/1/96

COMPILED BY. . . . . . . . . . . Rick Nash TELEPHONE #. . . . . . . . . . . (609) 971-4851 i

Month: October,1996 DAY MW DAY MW 1 0 16 0 2 0 17 0 3 0 18 0 4 0 19 0 5 0 20 0 6 0 21 0 7 0 22 0 8 0 23 37 9 0 24 374 10 0 25 299 11 0 26 0  !

12 0 27 0 13 0 28 0 14 0 29 0 15 0 30 0 31 0

1 OPERATING DATA REPORT OPERATING STATUS

1. Docket: '

50-219

2. Reporting Period: October,1996  ;

3. Utility Contact Rick Nash (609)-971-4851

4. Licensed Thermal Power (MWt): 1930

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

6. Design Electrical Rating (Net MWe) 650

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

12. Report Period Hours 745.0 7320.0 235440.0

13. Hours RX Critical 104.4 5916.9 160249.7

14. RX Reserve Shutdown Hours 0.0 0.0 918.2 ,

15. Hours Generator On-Line l 40.0 5796.5 156607.2

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16. UT Reserve Shutdown Hours 0.0 0.0 0.0

17. Gross Thermal Energy (MWH) 61975 10885320 271404813

18. Gross Electric Energy (MWH) 18165 3650279 91067854

19. Net Electric Energy (MWH) 13273 3509855 87379020 l

20. UT Service Factor 5.4 79.2 66.5

21. UT Available Factor 5.4 79.2 66.5

22. UT Capacity Factor (MDC Net) 2.9 77.5 60.5

23. UT Capacity Factor (DER Net) 2.7 73.8 57.1

24. UT Forced Outage Rate 83.5 7.1 9.8

25. Forced Outage Hours 203.2 445.7 16983.9

26. Shutdowns Scheduled Over Next 6 Months (Type, Date, Duration)

None

27. Currently Shutdown, Estimated Startup Date: November 6,1996 (actual)

• O. D UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO: 50-219 UNIT NAME: Ovster Creek DATE: November 11, 1996 -

COMPLT'D BY: David M. Eaan- ,

TELEPHONE: 609/971-4818 REPORT MONTH: October 1996 .-

Tres sermon or smorrDes m _ ur. ACTIONS / m s i No. DATE F: Forced DURATION StERSON (1) DOURI THE REhCTOR ,;

S: Schedsled (hours) OR REDUCDBS FONER (2)  ;

6 9/4/96 S 501.8 a 3 Plant trip on Low Condenser Vacuum. A i valve controller problem during condenser  !

F 46.2 a backwash was the root cause of the event. -

Plant remained shutdown. Scheduled start of 16R reached on 9/7/96. 46.2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of l 16R unscheduled from 10/21/96 to 10/23/96 '

due to V-1-312 steam leak.

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Manual Scram at 1200 on 10/25/96 in  ;

7 10/25/96 F 157.0 a 2 response to a Generator Runback.  !

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SUMMARY

. f (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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