ML041350485

April 2004 Monthly Operating Report for Davis-Besse, Unit 1

ML041350485
Person / Time
Site:	Davis Besse
Issue date:	05/13/2004
From:	Allen B FirstEnergy Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
3052
Download: ML041350485 (6)

Text

Davis-Besse Nuclear Power Station Fs e

5501 North State Route 2 ff.r Oak Harbor, Ohlo 43449-9760 Docket No. 50-346 License No. NPF-3 Serial 3052 May 13, 2004 Document Control Desk U. S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 Ladies and Gentlemen:

Monthly Operating Report, April 2004 Davis-Besse Nuclear Power Station Unit 1 Enclosed is a copy of the Monthly Operating Report for the Davis-Besse Nuclear Power Station for the month of April 2004.

Please direct questions to Brian D. Boles, Manager - Plant Engineering at (419) 321-7302.

Very truly yours, Barry S. Allen Plant Manager Davis-Besse Nuclear Power Station AWB/s Enclosures cc: DB-1 NRC/NRR Senior Project Manager DB-1 Senior Resident Inspector NRC Region Im Administrator P7>l

Docket No. 50-346 License No. NPF-3 Serial 3052 Distribution bcc: B. S. Allen, DB-2101 A. W. Bless - DB Compliance, DB 3065 B. D. Boles, DB-1056 D. R. Converse, DB-3310 J. J. Grabnar, DB-3210 F. Heizer, PUCO L. J. Kovach, DB-1056 B. Lewis, Utility Data Institute, Inc.

M. E. O'Reilly, GO-18 R. Prijatel, Fuel Accounting, GO-6 R. Runo, A-GO16A R. Schomaker, Framatome D. R. Wuokko, Supervisor - DB Licensing, DB-3065 M. D. Zawacki, DB-1056 American Nuclear Insurers CNRB Administrator, DB-3344 INPO Records Center Ohio EPA - DERR Compliance Utility Radiological Safety Board

Docket Number 50-346 License Number NPF-3 Serial 3052 Page 1 of I COMMITMENT LIST The following list identifies those actions committed to by the Davis-Besse Nuclear Power Station in this document. Any other actions discussed in the submittal represent intended or planned actions by Davis-Besse. They are described only as information and are not regulatory commitments. Please notify the Manager - Regulatory Affairs (419-321-8450) at Davis-Besse of any questions regarding this document or associated regulatory commitments.

Commitments Due Date None N/A

Docket Number 50-346 License Number NPF-3 Serial Number 3052 Page 1 of 3 Monthly Operating Report for April 2004 (two pages to follow)

OPERATING DATA REPORT DOCKET NO.

UNIT NAME DATE COMPLETED BY TELEPHONE 50-0346 Davis-Besse Unit 1 05/01/04 A. R. Miller 419-321-7824 REPORTING PERIOD Aprl, 2004 YEAR TO DATE MONTH CUMULATIVE 1 Design Electrical Rating (MWe-Net).

The nominal net electrical output of the unit specified by the utility and used for the purpose of plant design.

2 Maximum Dependable Capacity (MWe-Net).

The gross electrical output as measured at the output terminals of the turbine-generator during the most restrictive seasonal conditions minus the normal station service loads.

3 Number of Hours the Reactor Was Critical.

The total number of hours during the gross hours of the reporting period that the reactor was critical.

4 Number of Hours the Generator Was On Line.

(Also called Service Hours). The total number of hours during the gross hours of the reporting period that the unit operated with 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 Hours.

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 operation.

906 882 720.0 720.0 0.0 1,007.3 855.1 0.0 148,641.6 145,892.2 5,532.0 6 Net Electrical Energy (MWH).

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.

617,954 666,941 119,798,740

f.

UNIT SHUTDOWNS DOCKET NO.

UNIT NAME DATE COMPLETED BY REPORTING PERIOD:

April, 2004 TELEPHONE 50-346 Davis-Besse #1 4/06/04 A.R. Miller (419) 321-7824 NO.

DATE TYPE DURATION REASON (1)

METHOD OF CAUSE/CORRECTIVE ACTIONS F: FORCED (HOURS)

SHUTTING

&: SCHEDULED DOWN (2)

COMMENTS No Unit Shutdowns

SUMMARY

The reactor was at 100% power for the majority of the month of April, however, a few power reductions were performed during the month. The plant achieved 100% power on April 4, 2004 at 0019 hours2.199074e-4 days <br />0.00528 hours <br />3.141534e-5 weeks <br />7.2295e-6 months <br />. On April 5, 2004 from 2025 to 2153 hours0.0249 days <br />0.598 hours <br />0.00356 weeks <br />8.192165e-4 months <br /> plant power was reduced from approximately 1 00% to approximately 80% power to repair a 41 60V bus tie transformer breaker. Upon repair to the breaker on April 6, 2004 at 0040 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />, plant power was returned to approximately 1 00% power (attained at 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br />). On April 7, 2004 at 1508 hours0.0175 days <br />0.419 hours <br />0.00249 weeks <br />5.73794e-4 months <br /> plant power was reduced from approximately 1 00% to approximately 96% due to the loss of two non-essential 480 volt busses which occurred simultaneously with the loss of #1 Circulating Water Pump. All necessary actions were completed on April 7, 2004 at 2035 hours0.0236 days <br />0.565 hours <br />0.00336 weeks <br />7.743175e-4 months <br />, and plant power was returned to approximately 1 00% (attained at 2218 hours0.0257 days <br />0.616 hours <br />0.00367 weeks <br />8.43949e-4 months <br />). On April 18 and 19, 2004, power was reduced as necessary to maintain Main Condenser Pressure less than 5.0 inch HG. On April 18, 2004, plant power was reduced to approximately 92% at 1800 hours0.0208 days <br />0.5 hours <br />0.00298 weeks <br />6.849e-4 months <br /> and returned to approximately 1 00%

power at 2300 hours0.0266 days <br />0.639 hours <br />0.0038 weeks <br />8.7515e-4 months <br />. On April 19, 2004, plant power was reduced to approximately 98% at 1842 hours0.0213 days <br />0.512 hours <br />0.00305 weeks <br />7.00881e-4 months <br /> and returned to approximately 100% power at 2017 hours0.0233 days <br />0.56 hours <br />0.00333 weeks <br />7.674685e-4 months <br />.

(1) Reason:

A-Equipment Failure (Explain)

B-Maintenance or Test C-Refueling D-Regulatory Restriction E-Operator Training & License Exam F-Administrative G-Operational Error (Explain)

H-Other (Explain)

(2) Method:

1-Manual 2-Manual Trip/Scram 3-Automatic Trip/Scram 4-Continuation 5-Other (Explain)