ML051100314

March 2005 Monthly Operating Report for Three Mile Island Unit 1

ML051100314
Person / Time
Site:	Three Mile Island
Issue date:	04/11/2005
From:	Chick G AmerGen Energy Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
5928-05-20096
Download: ML051100314 (3)

Text

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AmerGensm AmerGen Energy Company, LLC Telephone: 717-948-8000 An Exelon Company Three Mile Island Unit 1 Route 441 South, P0. Box 480 Middletown, PA 17057 April 11, 2005 5928-05-20096 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 THREE MILE ISLAND UNIT I (TMI UNIT 1)

OPERATING LICENSE NO. DPR-50 DOCKET NO. 50-289

SUBJECT:

MONTHLY OPERATING REPORT FOR MARCH 2005 Enclosed are two copies of the March 2005 Monthly Operating Report for Three Mile Island Unit 1. The content and format of information submitted in this report is in accordance with the guidance provided by Generic Letter 97-02.

Sincerely, Glen E. Chick Plant Manager GEC/awm

Enclosure:

Appendix A, and Appendix B cc: Administrator, Region I TMI-1 Senior Resident Inspector File 05001

Document Control Desk 5928-05-20096 Page 2 of 3 APPENDIX A OPERATING DATA REPORT DOCKET NO. 50-289 DATE April 11, 2005 COMPLETED BY A. W. MILLER TELEPHONE (717) 948-8128 REPORTING PERIOD: March 2005 YEAR TO MONTH DATE CUMULATIVE

1. DESIGN ELECTRICAL RATING (MWe NET). 819.0 ** **

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). 802.0 **

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 REACTOR WAS CRITICAL. 744.0 2,160.0 185,821.9 The total number of hours during the gross hours of the reporting period that the reactor was critical.

4. HOURS GENERATOR ON LINE. 744.0 2,160.0 184,207.2 (Service Hours) The total number of hours during the gross hours of the reporting period that the unit operated with the breakers closed to the station bus. The sum of the hours that the generator was on line plus the total outage hours in the reporting period.

5. UNIT RESERVE SHUTDOWN HOURS. 0.0 0.0 0.0 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). 633,072.0 1,842,344.0 146,843,664.4 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 megawatt hours. Negative quantities should not be used.

• • Design values have no 'Year to Date' or "Cumulative" significance.

Document Control Desk 5928-05-20096 Page 3 of 3 APPENDIX B UNIT SHUTDOWNS DOCKET NO. 50-289 DATE April 11, 2005 COMPLETED BY A. W. MILLER TELEPHONE (717) 948-8128 REPORTING PERIOD: March 2005 Generator Off Une Method of Cause & Corrective No Date Type' Duration Reason 2

Shutting Action to (Hours) Down Prevent Recurrence ReactorP None lI1I1 I I 2 3 F Forced Reason Method S Scheduled A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Other (Explain)

E-Operator Training & Ucensing Examination F-Administrative G-Operational Error (Explain)

H-Other (Explain)

SUMMARY

The unit began the month of March at a nominal 100% power level. On March 12th, at approximately 22:00, a planned power reduction to 13th.

approximately 90% power took place to facilitate main turbine control valve testing. Return to nominal full power occurred at approximately 03:21 on March The unit remained at nominal full power for the remainder of the month. The reactor was critical during the entire month. There were neither planned nor unplanned power level changes of > 20%.