ML20206P975

Monthly Operating Rept for Apr 1999 for Cooper Nuclear Station

ML20206P975
Person / Time
Site:	Cooper
Issue date:	04/30/1999
From:	Nelson K NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML20206P973	List: ML20206P968 ML20206P975
References
NUDOCS 9905190032
Download: ML20206P975 (4)

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APPENDIX A OPERATING DATA REPORT DOCKET NO. 050-8298 UNIT NAME Cooper Naclear Stattun DATE' 5/13/99 COMPLETED BY K. E. Nelson TELEPilONE (402) 825-50M Reporting Period: Apri 1999 This Month Yr.-to-Date Cumulative

1. Design Electrical Rating (Net MWe). 778 N/A N/A The nominal net electrical output of the unit specified by the utility and used for the purpose of plant design.

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l 2, Maximum Dependable Capacity (Net MWe): 764 N/A N/A The gross electrical output as measured at the output terminals of the turoine-i generator during the most restrictive I

seasonal conditions minus the normal I station service loads.

3. Number ofIlours the Reactor Was Critical. 719 0 2.879 0 164,565 8 i

The total number of hours during the ]

gross hours of the reporting period that the reactor was critical.

4. Number ofilours the Generator Was On Line. 79.0 2,879 0 162,245 1 (Also called Service llours). The total number of hours during the gross hours of the reporting period that the unit operated i with the breakers closed to the station bus.

The sum of the hours the generator was on line plus the total outage hours should equal the gross hours in the reporting period.

5. Unit Reserve Shutdown ifours. 00 00 00 The total number of hours during the gross hours of the reporting period that the unit was removed from service for economic or similar reasons but was available for .

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6. Net Electrical Energy (MWil). 554,097 0 2,173,751 6 108,064382 2 l The gross electrical output of the unit measured at the output terminals of the turbine-generator minus the normal station service loads during the gross hours of the reporting period, expressed in mega-watt hours Negative quantities should not be used.

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, APPENDIX C SAFETY / RELIEF VALVE CHALLENGES  !

APRIL 1999 i There were no operational challenges to the safety valves or safety relief valves during the month ofApril.

The as-found testing of the safety relief valves removed during Refueling Outage 18 was completed during April 1999. Of the six pilot assemblies and two complete valves tested, one pilot assembly was identified to have an initial automatic actuation of 5.56% above its setpoint.

This result is outside of the required 3% Technical Specification limit. A Licensee Event Report is being generated.

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'i l ATTACHMENT 3 LIST OF NRC COMMITMENTS l Correspondenc,e No: NLS990049 i

The following table identifies those actions committed to by the District in this document. Any other actions discussed in the submittal represent intended or l planned actions by the District. They are described to the NRC for the NRC's I

.information and are not regulatory commitments. Please notify the NL&S Manager at j

, Cooper Nuclear Station of any questions regarding this document or any associated I regulatory commitments.

COMMITTED DATE l COMMITMENT OR OUTAGE None-l l

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l PROCEDURE NUMBER 0.42 l REVISION NUMBER 6 l PAGE 9 OF 13 __]