ML020150547
| ML020150547 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 01/08/2002 |
| From: | Sumner H Southern Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| HL-6172, TS 5.6.4 | |
| Download: ML020150547 (7) | |
Text
Lewis Sumner Southern Nuclear Vice President Operating Company, Inc.
Hatch Project Support 40 Inverness Parkway Post Office Box 1295 Birmingham, Alabama 35201 Tel 205.992.7279 Fax 205-992.0341 SOUTHERN X COMPANY Energyto Serve Your World SM January 8, 2002 Docket Nos. 50-321 50-366 HL-6172 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 Edwin I. Hatch Nuclear Plant Monthly Operating Reports Ladies and Gentlemen:
Enclosed are the December 2001 Monthly Operating Reports for Edwin I. Hatch Nuclear Plant Unit 1, Docket No. 50-32 1, and Unit 2, Docket No. 50-366. These reports are submitted in accordance with Technical Specifications 5.6.4.
Respectfully submitted, H. L. Sumner, Jr.
IFL/eb
Enclosures:
- 1. December Monthly Operating Report for Plant Hatch Unit 1
- 2. December Monthly Operating Report for Plant Hatch Unit 2 cc: Southern Nuclear Operating Company Mr. P. H. Wells, Nuclear Plant General Manager SNC Document Management (R-Type A02.001)
U. S. Nuclear Regulatory Commission, Washington D. C.
Mr. L. N. Olshan, Project Manager - Hatch U. S. Nuclear Regulatory Commission, Region II Mr. L. A. Reyes, Regional Administrator Mr. J. T. Munday, Senior Resident Inspector - Hatch Utility Data Institute, Inc.
Ms. Barbara Lewis - McGraw-Hill Companies 7,
Enclosure 1 Plant Hatch Unit 1 Monthly Operating Report December 2001 Table of Contents Page El-1 Operating Data Report El-2 Unit Shutdowns and Power Reductions
OPERATING DATA REPORT Docket No.: 50-321 Unit Name: E. I. Hatch Unit 1 Date: January 2, 2002 Completed By: R. M. Beard Telephone: (912) 367-7781 x2878 Operating Status
- 1. Reporting Period: DECEMBER 2001
- 2. Design Electrical Rating (Net MWe): 864.6
- 3. Maximum Dependable Capacity (Net MWe): 863 This Month Year To Date Cumulative
- 4. Number of Hours Reactor Was Critical: 744.0 8,709.1 182,514.4
- 5. Hours Generator On Line: 744.0 8,689.5 176,693.6
- 6. Unit Reserve Shutdown Hours: 0.0 0.0 0.0
- 7. Net Electrical Energy Generated: 646,166 7,496,174 127,904,137 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES Date Tag No. Event Description No challenges this month.
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UNIT SHUTDOWNS Docket No.: 50-321 Unit Name: E. I. Hatch Unit 1 Date: January 2, 2002 Completed By: R. M. Beard Telephone: (912) 367-7781 x2878 Reporting Period: DECEMBER 2001 Type Method of F: Forced Duration Shutting Cause/Corrective Actions No. Date S: Scheduled (Hours) Reason (1) Down (2) Comments No unit shutdowns occurred this month.
(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 Examination 5-Other (Explain)
F-Administrative G-Operational Error (Explain)
H-Other (Explain)
CAUSE/CORRECTIVE ACTION/COMMENTS:
NARRATIVE REPORT Unit 1 operated at rated thermal power for most of the month of December. The only exceptions were a load reduction on 12/2/01 to approximately 615 GMWe (-2070 CMWT) for a Control rod Sequence Exchange and Control Rod Drive Scram Time Testing. Load was then reduced further, to approximately 570 GMWE
(-1795 CMWT), for Turbine Control Valve Testing and minor maintenance activities in the Condenser Bay.
The unit was returned to rated thermal power later that day. The second load reduction occurred on 12/15/01, to approximately 880 GMWe (-2630 CMWT), for Turbine Stop Valve and Turbine Bypass Valve Testing. The unit was returned to rated thermal power a short time later.
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Enclosure 2 Plant Hatch Unit 2 Monthly Operating Report December 2001 Table of Contents Page Operating Data Report E2-1 Unit Shutdowns and Power Reductions E2-2
OPERATING DATA REPORT Docket No.: 50-366 Unit Name: E. I. Hatch Unit 2 Date: January 2, 2002 Completed By: R. M. Beard Telephone: (912) 367-7781 x2878 Operating Status
- 1. Reporting Period: DECEMBER 2001
- 2. Design Electrical Rating (Net MWe): 859
- 3. Maximum Dependable Capacity (Net MWe): 878 This Month Year To Date Cumulative
- 4. Number of Hours Reactor Was Critical: 594.3 7,670.9 158,102.7
- 5. Hours Generator On Line: 594.3 7,618.3 153,775.1
- 6. Unit Reserve Shutdown Hours: 0.0 0.0 0.0
- 7. Net Electrical Energy Generated: 516,628 6,584,534 113,194,616 CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES Date Tag No. Event Description No challenges this month.
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UNIT SHUTDOWNS Docket No.: 50-366 Unit Name: E. I. Hatch Unit 2 Date: January 2, 2002 Completed By: R. M. Beard Telephone: (912) 367-7781 x2878 Reporting Period: DECEMBER 2001 Type Method of F: Forced Duration Shutting Cause/Corrective Actions No. Date S: Scheduled (Hours) Reason (1) Down (2) Comments01-003 011225 F 149.7 A 3 An automatic reactor scram occurred due to high neutron flux due to failure of outboard MSIV, 2B21-F028B, Licensee Event Report 2-01-003.
The cause of failure was determined to be valve stem seperation due to high cycle fatigue. The investigation continues to identify the exact conditions that resulted in the failure. The unit remains in a forced outage at the end of the reporting period due to repair of another damaged valve in the feedwater system.
(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 Examination 5-Other (Explain)
F-Administrative G-Operational Error (Explain)
H-Other (Explain)
CAUSE/CORRECTIVE ACTION/COMMENTS:
NARRATIVE REPORT Unit 2 began the month of December operating at rated thermal power. Shift reduced load to approximately 565 GMWe (-1763 CMWT) on 12/14/01 to repair a steam leak on an inspection port manway cover on the "A" MSR Hotwell Drain Tank. Minor repairs in the Condenser Bay, monthly Turbine Stop Valve Testing, Turbine Bypass Valve Testing, and Control Rod Drive Exercises were completed while at reduced load. The unit was returned to rated thermal power early on 12/15/01. Shift reduced load again on 12/17/01 to approximately 910 GMWe (-2735 CMWT) to perform a rod pattern adjustment necessitated by the load reduction on 12/15/01.
The unit was returned to rated thermal power within the hour. Another load reduction was initated on 12/19/01 to approximately 675 GMWe (-2070 CMWT) to perform additional repair to the steam leak on the "A" MSR Hotwell Drain Tank. The unit was returned to rated thermal power early 12/20/01. The unit then experienced an automatic reactor scram on high neutron flux due to failure of outboard MSIV, 2B21 -F028B. Activities associated with the repair of the MSIV were completed around noon on 12/31/01; however, the unit remains in a forced outage due to the discovery of and need to repair damage to the 4th Stage "B" Feedwater Heater Bypass Valve, 2N21-F114B.
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