ML20096F607

Monthly Operating Rept for Apr 1992 for Oyster Creek Nuclear Generating Station

ML20096F607
Person / Time
Site:	Oyster Creek
Issue date:	04/30/1992
From:	J. J. Barton, Bradley E GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
C321-92-2155, NUDOCS 9205210251
Download: ML20096F607 (7)

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1 GPU Nuclear Corporation Q

gf Post Office Box 388 Route 9 South Forked River, New Jersey 08731-0388 609 971-4000 Wnur's Direct Dial Nurnber:

C321-92-2155 May 15,1992 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.

20555

Subject:

Oyster Creek Nuclear Generating. Station

-Docket No. 50-219 Honthly Operating Report In accordance with the Oyster Creek Nuclear Generating Station Operating License No. DPR-16, Appendix A, Section 6.9.1.C, 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 Brenda DeMercha it, Oyster Creek Licensing Engineer at (609) 971-4642.

Sincerely, j

.g J.J.

rton A-Vice President and Director U

Oyster Creek JJB/BDEM: Jc Attachment (MOR-RPT.APR) cc:

Administrator, Region 1 Senior NRC Resident Inspector Oyster Creek NRC Project Manager

.220001 9205210251 920430 PDR ADOCK 05000219 R

PDR GPU Nuclear Corporanon is a subsidiary of General Pubbc UUhties Corporahon

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. oyster _cra',k operated at full power for the entire month of

.. April a ad obtained an average daily gross generator output of 649 megawatts.

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" MONTHLY-OPERATING REPORT APRIL, 1992 The following Licensee Event Reports were_ submitted during the month of April, 1992.

LER 92-001-

- On March _12,1992 at,approximately 1033 hours0.012 days <br />0.287 hours <br />0.00171 weeks <br />3.930565e-4 months <br />, the Control Room received a report-

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that sparks were coming from the; status lights for the undervoltage protection circuit located on--the front' of the 4160 Volt emergency switchgear.

At:1200-hours,'it was determined-that all undervoltage protection for one of the safety related buses _ was _ _ inoperable, As the plant was shutting down to. satisfy technical specification: requirements, electrical personnel-prepared and implemented a work' package that replaced the damaged wiring, relay, lamp socket,

and fuse.

At 2223 hours0.0257 days <br />0.618 hours <br />0.00368 weeks <br />8.458515e-4 months <br />,: the undervoltage protection' circuitry was : declared.-

operable.and.the reactor. shutdown was~ terminated. The cause of this event has been attributed to the_ design of the lamp sockets and circuitry associated with the undervoltage protectfon status lamps. The_ force required to install a light

- bulb causes a reduction in the internal clearance between the base ground of the

. socket and the positive terminal.- The circuit involved is 125 volts DC so when the light bulb-burned out on March 12,1992,- an arc was. formed across the reduced internal _ clearance which'resulted in-a short circuit. -The safety significance of 'this ' event is minimal since _-the - redundant safety-related bus: was fully operab'e. Corrective action will consist:of an inspection of the other 4160 Volt switchgear and evaluation o-f the-need for design changes.

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z.7 oyster Creek Station #1 Docket No. 50-219 REFUELING'INFORMATION - APRIL, 1992 i

Name of Facility: Oyster Creek Statien #1 Scheduled date for next refueling shutdown:

January 15, 1993 Scheduled date-for restart following refueling March 30, 1993

- Will refueling or resumption of operation ti reaf ter require a Technical Specification change or other license amendment?

No Important-licensing considerations associated with refueling, e.g.,

new or dif ferent fuel design or supplier, unreviewed design or performance analysis

- methods,.significant changes in fuel design, new operating procedures:

1.

General Electric Fuel becamblies Fuel design and performance analysis methods have been approved by the NRC.

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Exxon Fuel Assemblies - No major changes have been made nor are there any anticipated.

The number of fuel ~assemblle s (a) In the cote 560

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(b) in the spent fuel storage pool = 1708 (c) in dry otorage 44

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The' present. licenshd spent fuel pool storaga. :apacity arid the size of any increase in licensed storage capacity that has.been requested or is planned, in

- number.of fuel' assemblies:

Present Licensed Capacity 2600 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 De t'

available through tne 1996 refueling outage.

NRC RPT.WPD/48 l,

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l OPERATING DATh REPORT OPERATING STATUS

1. DOCKET:

50-219

2. REPORTING PERIOD:

04/92

3. UTILITY CONTACT:

ED BRADLEY (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 (CROSS MWe):

632 8.

MAXIMUM DEPENDhBLE CAPACITY (NET MWa):

610 9.

IF CHANGES OCCUR ABOVE SINCE LAST REPORT, GIVE REASONS:

NONI

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

NONE

11. REASON FOR RESTRICTION, IF ANY:

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13ONE MONTH YEAR QUMULATIVE

12. REPOP.T PERIOD HOURS 719.0 2903.0 195959.0

13. HOURS RX CRITICAL 719.0 2903.0 127265.7

14. RX RESERVE SHUTDOWN HRS 0.0 0.0 918.2

15. HPS GENERATOR ON-LINE 719.0 2903.0 123985.3

16. UT RESERVE 7'iTDWN HRS 0.0 0.0 1208.6 r

ff 17 GROSS THERM ENERGY (MWH) 1385423 5546188 209871546

18. GROSS ELEC ENERGY (MWH) 466650 1875328 70560958

19. NET ELEC ENERGi (MWH) 449722 1807182 67713870

20. UT SERVICE FACTOR 100.0 100.0 63.3

21. UT AVAIL FACTOR 100.0 100.0 63.9

22. UT CAP FACTOR (MDC NET) 102.5 102.1 55.8

23. UT CAP FACTOR (DER NET) 96.2 95.8 53.2

24. UT FORCED OUTAGE RATE 0.0 0.0 11.2

25. FORCED OUTAGE HRS 0.0 0.0 15691.2

26. SHUTDOWNS SCHEDULLD INER UEXT 6 MONTHS (TYPE, DATE, DURATION):

NONE

27. IF CURRENTLY SHUTDOWN, ESTIMATED STARTUP DATE:

N/A NRC_RPT.WPD/50

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AVERAGE DAILY POWER LEVEL NET MWe l

DOCKET #.

50-219 UNIT.

OYSTER CREEK #1 REPORT DATE.

.MAY 5, 1992 COMPILED BY ED BRADLEY TELEPHONE f.

.609-971-4097 MONTH:

APRIL, 1992 EAI-MI i._A_Y M

1.

628 16.

624 2.

627 17.

627 3.

628 18.

625 4.

627 19.

628 5.

627 20.

627 6.

628 21.

625 7.

627 22, 623 8.

626 23.

624 9.

627 24, 622 10.

624 25.

622 11.

626 26.

624 12.

626 27.

625 13.

6.7 28, 624 14.

624 29.

624 15.

626 30.

622 NRC_RPT.WPD/49

3 C

t UNIT SIPJTDOWNS AND POWER REDUCTTONS DO3ET NO:

30-219 WIT NAME.

Oyster Creek DATE:

May 5.

1992

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COMPLT*D bye Javid Enan

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TELEPHONEq'.2 71-4818 REPORT MONTH:.

Apri1 1992 gCORRECTIVE 4

TYPE METHOD OF SNUTTING No.

DATE F:

Forced-,

DURATION.

REASON-(1)

DOWN THE REACTOR CR ACTIONS / COMMENTS Si Scheduled (hours)

REDUCING FOWER (2)

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There were no i

shutdowns or signif icar.t power reductiens durir.g the reporting pe. tod,'

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SUMMARY

(1) REASOM (2) METN)D i

a.

Fquipment Failure (Explain)'

e.

Operator Trainir4 r. Lie Exam 1.

Manual b.

Maintenance or Otst f,

Administrative 2.

Manual Scram c.

Refueling s.

Operational Error i.Explatn) 3.

Automatic Scra:n de Regulatory Restriction h.

Other (Explain) 4.

Other (Explair.)

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