ML042920044

September 2004 Monthly Operating Report for Davis-Besse

ML042920044
Person / Time
Site:	Davis Besse
Issue date:	10/14/2004
From:	Allen B FirstEnergy Corp, FirstEnergy Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
3097
Download: ML042920044 (8)

Text

Davis-Besse Nuclear Power Station FirstEnr~ Oak Harbor, Ohio 43449-9760 Docket No. 50-346 License No. NPF-3 Serial No. 3097 October 14, 2004 United States Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555-0001 Monthly Operating Report, September 2004 Davis-Besse Nuclear Power Station Unit 1 Ladies and Gentlemen:

Enclosed is a copy of the Monthly Operating Report for the Davis-Besse Nuclear Power Station for the month of September 2004.

Also, please find enclosed a revision to the August 2004 Monthly Operating Report, Operating Data Report page. The update is due to a discrepancy discovered in the time for the August 4, 2004, reactor trip that was used to calculate the number of hours the reactor was critical for the month. This discrepancy resulted in a change from the Number of Hours the Reactor Was Critical for the month from 668.8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to 668.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />. The Year to Date and Cumulative hours the reactor was critical were also updated accordingly.

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

Very truly yours, Barry S. Allen Director - Site Operations Davis-Besse Nuclear Power Station AWB/s Enclosures cc: DB-1 NRC/NRR Senior Project Manager DB-1 Senior Resident Inspector NRC Region III Administrator Z)4

Docket No. 50-346 License No. NPF-3 Serial No. 3097 Distribution bcc: B. S. Allen, DB-2101 A. W. Bless, DB 3065 B. D. Boles, DB-1056 D. R. Converse, DB-3310 J. J. Grabnar, DB-3210 L. J. Kovach, DB-1056 A. R. Miller, DB-1056 M. E. O'Reilly, GO-18 R. Runo, GO-14 T. Schneider, A-GO-17 G. C. Wilson, DB-2103 D. R. Wuokko, DB-3065 F. Heizer, PUCO B. Lewis, Utility Data Institute, Inc.

R. Prijatel, Fuel Accounting, GO-6 R. Schomaker, Framatome American Nuclear Insurers CNRB Administrator INPO Records Center Ohio EPA - DERR Compliance Utility Radiological Safety Board

Docket No. 50-346 License No. NPF-3 Serial No. 3097 Page 1 of 1 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 Director - Performance Improvement (419-321-7181) at Davis-Besse of any questions regarding this document or associated regulatory commitments.

Commitments Due Date None N/A

Docket No. 50-346 License No. NPF-3 Serial No. 3097 Monthly Operating Report for September 2004 (two pages to follow)

OPERATING DATA REPORT DOCKET NO. 50-0346 UNIT NAME Davis-Besse Unit 1 DATE 10/01/04 COMPLETED BY A. R.Miller TELEPHONE 419-321-7824 REPORTING PERIOD September, 2004 YEAR TO MONTH DATE CUMULATIVE 1 Design Electrical Rating (MWe-Net). 906 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). 882 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. 720.0 4,603.0 152,237.3 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. 720.0 4,420.0 149,457.1 (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. 0.0 0.0 5,532.0 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.

6 Net Electrical Energy (MWH). 636,241 3,807,960 122,939,757 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.

UNIT SHUTDOWNS DOCKET NO. 50-346 UNIT NAME Davis-Besse #1 DATE 10/01/04 COMPLETED BY A.R. Miller REPORTING PERIOD: September, 2004 TELEPHONE (419) 321-7824 NO. DATE TYPE DURATION REASON (1) METHOD OF CAUSE/CORRECTIVE ACTIONS F: FORCED (HOURS) SHUTTING S: SCHEDULED DOWN (2) COMMENTS No Unit Shutdowns.

SUMMARY

The reactor was at 100% power for the majority of the month. On September 5, the unit downpowered to approximately 90% for Main Turbine Control Valve, Combined Intermediate Valves Testing. On September 25, the unit downpowered to approximately 90% for Main Turbine Valve Testing.

(1) Reason: (2) Method:

A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip/Scram C-Refueling 3-Automatic Trip/Scram D-Regulatory Restriction 4-Continuation E-Operator Training & License Exam 5-Other (Explain)

F-Administrative G-Operational Error (Explain)

H-Other (Explain)

Docket No. 50-346 License No. NPF-3 Serial No. 3097 Revised August 2004 Monthly Operating Report Operating Data Report Page (one page to follow)

OPERATING DATA REPORT DOCKET NO. 50-0346 UNIT NAME Davis-Besse Unit 1 DATE 10/05/04 COMPLETED BY A. R.Miller TELEPHONE 419-321-7824 REPORTING PERIOD August, 2004 YEAR TO MONTH DATE CUMULATIVE 1 Design Electrical Rating (MWe-Net). 906 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). 882 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. 668.7 3,883.0 151,517.3 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. 637.9 3,700.0 148,737.1 (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. 0.0 0.0 5,532.0 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.

6 Net Electrical Energy (MWH). 554,935 3,171,719 122,303,517 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.