ML050250221
| ML050250221 | |
| Person / Time | |
|---|---|
| Site: | Three Mile Island  |
| Issue date: | 01/11/2005 |
| From: | Chick G AmerGen Energy Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 5928-05-20003 | |
| Download: ML050250221 (3) | |
Text
AmerGen Energy Company, LLC Telephone: 717-948-8000 AmerGen An Exelon Company SM Three Mile Island Unit 1 Route 441 South, P.O. Box 480 Middletown, PA 17057 January 11, 2005 5928-05-20003 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 DECEMBER 2004 Enclosed are two copies of the December 2004 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 Chick Plant Manager GEC/awm
Enclosure:
Appendix A, and Appendix B cc: Administrator, Region I TMI-1 Senior Resident Inspector File 04001
Document Control Desk 5928-05-20003 Page 2 of 3 APPENDIX A OPERATING DATA REPORT DOCKET NO. 50-289 DATE January 11, 2005 COMPLETED BY A. W. MILLER TELEPHONE (717) 948-8128 REPORTING PERIOD: December 2004 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 8,784.0 183,661.9 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 8,784.0 182,047.2 (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). 595,257.0 7,273,321.0 145,001,320.4 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 5928-05-20003 Page 3 of 3 APPENDIX B UNIT SHUTDOWNS DOCKET NO. 50-289 DATE January 11, 2005 COMPLETED BY A. W. MILLER TELEPHONE (717) 948-8128 REPORTING PERIOD: December 2004 Generator Off Une Method of Cause & Corrective No Date Type' Duration Reason2 Shutting Action to (Hours) Down Prevent Recurence Reactorw None 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 December at a nominal 100% power level. On December 3rd, at approximately 21:00, an unplanned power reduction to approximately 75% was performed to facilitate investigation and repair of a leak in the heater drain system. This was caused by degradation of a piping weld at a structural penetration. Power level was restored to nominal full power at approximately 06:15 on December 7th. On December 9th, at approximately 12:30, an unplanned power reduction to approximately 23% was performed to facilitate investigation and repair of a steam leak in the Intermediate Building. This was caused by degradation of an instrument connection. Power level was restored to nominal full power at approximately 14:10 on December 10th, and remained at nominal full kpower for the remainder of the month.