ML20129B163

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

ML20129B163
Person / Time
Site:	Oyster Creek
Issue date:	09/30/1996
From:	Egan D, Roche M GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
6730-96-2310, NUDOCS 9610220346
Download: ML20129B163 (7)

Text

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GP" Nuclear, Inc. 1 l Aoute #9 South

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Forked we NJ 8731-0388

'el009-9714000 -

1 October 15, 1996 6730- % -2310 U. S. Nuclear Regulatory Commission Attention: Document Control Desk 9 Washint.sa, DC 20555 1

SUBJECT:

Oyster Creek Nuclear Generating Station Docket No. 50-219 Monthly Operating Report - September,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, 7LL16es Michael B. Roche Vice President & Director Oyster Creek MBR/BDeM/gl Enclosures ,

i cc: Administrator, Region I (2 copies) j NRC Project Manager NRC Resident inspector 9610220346 960930 ADOCK 05000219 QI j PDR ..

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SUMMARY

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SEPTEMBER,1996 1

Oyster Creek automatically shutdown on September 4 at 2053 on low condenser vacuum. A valve j controller problem during condenser backwash caused the event. Because the event occurred close to the scheduled start date of 16R, a decision was made to remain shutdown and begin the outage early.

The plant generated 54,664 net MWH during the month and achieved an MDC net capacity factor of 123 %.

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MONTHLY OPERATING REPORT Licensee Event Reports - September.1996 On 07/13/96, the B Augmented Offgas (AOG) Recombiner Outlet Hydrogen Analyzer was left in the test mode while placing the AOG system in service. This monitor measures the outlet hydrogen concentration and isolates cnd bypasses the AOG system on a high level condition. Tech Spec 3.15 requires the hydrogen analyzer to be operable whenever the AOG System is in service. This deviation from the Tec Specs was discovered on 08/18/96.

The cause of this event has been determined to be inadequate written communications, as the AOG operating procedure does not contain effective controls for placing the AOG system into service. Upon discovery, -

immediate corrective action was taken to place the analyzer into service. Additional long term corrt.ctive actions will be taken prior to restart from the current refueling outage to review the procedure for revisior and provide a briefmg to operators on system startup.

The safety significance of this event has been determined to be minimal. Redundant monitoring, equipment was fully operable while the analyzer was out of service and would have provided suflicient warning of a hydrogen concentration concern.

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OPERATING DATA REPORT OPERATING STATUS

1. Docket: 50-219

2. Reporting Period: September,1996

3. Utility Contact Paul G. Edelmann (609)-971-4097

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 flours 720.0 6575.0 234695.0

13. Ilours RX Critical 92.9 5812.5 160145.4

14. RX Reserve Shutdown llours 0.0 0.0 918.2

15. Ilours Generator On-Line 92.9 5756.5 156567.2

16. UT Reserve Shutdown llours 0.0 0.0 0.0

17. Gross Thermal Energy (MWil) 178886 10823345 271342838

18. Gross Electric Energy (MWil) 58906 3632114 91049689

19. Net Electric Energy (MWil) 54664 34 % 582 87365747

20. UT Service Factor 12.9 87.6 66.7

21. UT Available Factor 12.9 87.6 66.7

22. UT Capacity Factor (MDC Net) 12.3 85.9 60.7

23. UT Capacity Factor (DER Net) 11.7 81.8 57.3

24. UT Forced Outage Rate 35.5 4.0 9.7

25. Forced Outage llours 51.1 242.5 16780.7

26. Shutdowns Scheduled Over Next 6 Months (Type, Date, Duration) 16R Outage, September 4,1996; 45 to 55 Days

27. lf Currently Shutdown, Estimated Startup Date: October 17,1996

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Oyster Creek Station #1 -

Docket No. 50-219 t

Refueling Information - August.1996 Name of Facility: Oyster Creek Station #1 Scheduled date for next refueling shutdown: September 7,1996 (Actual Date: Sept. 4,1996) _

Scheduled date for restart following refueling: Currently projected for October 17,1996 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 sur plier, unreviewed design or performance analysis methods, significant changes in fuel design, new operating ,

procedures:

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1. General Electric Fuel Assemblies - Fuel design and performance analysis methods have been l 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 NOTE: Reported fuel assembly numbers are as of October 1,1996, at 12:00 noon.

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 will be lost after the 1996 refueling outage.

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AVERAGE DAILY POWER LEVEL 4

NET MWe DOC K ET # . . . . . . . . . . . . . 50-219 U NIT . . . . . . . . . . . . . . . . Oyster Creek #1 REPORT DATE . . . . . . . . . . 10/4/96 COMPILED BY. . . . . . . . . . . Paul G. Edelmann TELEPHONE #. . . . . . . . . . . (609) 971 4097 Month: September,1996 DAY MW DAY MW 1 612 16 0 2 612 17 0 3 612 18 0 4 526 19 0 5 0 20 0 6 0 21 0 7 0 22 0 8 0 23 0 9 0 24 0 10 0 25 0 l 11 0 26 0 I 12 0 27 0 13 0 28 0 l 14 0 29 0 15 0 30 0 1 l

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UNIT SHUTDOWNS AND POWER REDUCTIONS l

l DOCKET NO: 50-219 l UNIT NAME: Ovster Creek l

DATE: October 11. 1996 COMPLT'D BY: David M. Ecan TELEPHONE: 609/971-4818 l

i REPORT MONTH: September 1996 TrrE ueTuoo or sEuTTnts cam. AcTI0ss/m===Ts No. M F: Forced DURATION BEASON (1) DOIER THE REACTOR S: Scheduled (hours) OR REDUCDIG POIfER (2) 6 9/4/96 F 51.1 a 3 Plant trip on Low Condenser Vacuum. A valve controller problen: during condenser backwash was i.he root cause of the event.

9/7/96 S 576 n/a n/a Plant remained shutdown. Scheduled start of 16R reached 9/7/96.

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) 4 v_______. . - - _ _ _ _ _ _ _ _ _ - _ - _ _ _ _