ML20065J604

Monthly Operating Repts for Mar 1994 for Ei Hatch Nuclear Plants

ML20065J604
Person / Time
Site:	Hatch
Issue date:	03/31/1994
From:	Beard R, Beckham J GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HL-4561, NUDOCS 9404180320
Download: ML20065J604 (12)

Text

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, Georgia Power Company

• , 40 inverrms Center Parkway Post Offce Box 1295

- Birr6ingham, Alabama 35201 Telephone 205 877 7279 J. T. Beckham, Jr. Georgia Power c

A Vice Prosident Nuclear Hatch Project the scurrem dectr:c system April 12, 1994 Docket Nos. 50-321 HI,4561 50-366 000005 U.S. Nuclear Regulatory Commission ATFN: Document Control Desk Washington, D.C. 20555 Edwin I. Hatch Nuclear Plant Monthlv Opemting Reports Gentlemen:

Enclosed are the March 1994 Monthly Operating Reports for Edwin I. Hatch Nuclear Plant - Unit 1, Docket No. 50-321, and Unit 2, Docket No. 50-366. These reports are submitted in accordance with the requirements of Technical Specification 6.9.1.10. l Sincerely,

'}/ 'q J. T. Beckham, Jr.

SRP/sp

Enclosures:

1. March Operating Report for Plant Hatch - Unit 1

2. March Operating Report for Plant Hatch - Unit 2 c: (See next page.)

,I 9404100320 940331 PDR ADOCK 05000321 (( 1.

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Georgia Power 1 U.S. Nuclear Regulatory Commission Page 2 April 12, 1994 c: Georeia Power Cornvany Mr.11. L Sumner, Nuclear Plant General Manager NORMS U.S. Nuclear Regulatory Commission. Washincton. D.C.

Mr. K. Jabbour, Licensing Project Manager - Hatch U.S. Nuclear Regulatory Commission. Reelon 11 Mr. S. D. Ebneier, Regional Administrator Mr. L D. Wert, Senior Resident Inspector - Ilatch Utility Data Instityte. Inc.

Mr. Fred Yost, Director - Research Services 1

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l Enclosure 1 l

Plant Hatch Unit 1 Monthly Operating Report '

March 1994 Table of Contents Page Narrative Report El-1 Operating Data Report El-2 Average Daily Power Level El-3 Unit Shutdowns and Power Reductions El-4 Illa 561

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e PLANT E. I. HATCH - UNIT ONE DOCKET NO.: 50-321 DATE: APRIL 6, 1994 NARRATIVE REPORT COMPLETED BY: R. M. BEARD TELEPHONE: (912) 367-7781 x2878 JMARCH 1 0000 Shift continued to maintain rated thermal' power.

MARCH 13 0035 Shift began reducing load to a Turbine Control Valve Testing,pproximately 600 GMWe to performTurbin a Control Rod Sequence Exchange.

MARCH 13 1234 Shift began ascension to rated thermal power.

MARCH 13 1432 Rated thermal power was attained.

MARCH 25 2100 Shift rc Aced load to approximately 600 GMWe when Plant Service Water to the Turbine Building isolated. The isolation occurred when a LOCA signal was inadvertantly generated during the performance of an Analog Transmitter Trip System surveillance.

MARCH 25 2338 Shift began ascension to rated ' thermal power.

MARCH 26 0210 Rated thermal power was attained.

MARCH 29 0101 A loss of Main Generator field excitation led to a load rejection by:

Turbine-Generator System and' resulted in an automatic reactor shutdown.

MARCH 31 1402 Shift began withdrawing control rods for_ unit startup.

MARCH 31 1808 Shift brought the reactor critical.

MARCH 31 2400 Shift continued with unit startup activities.

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i OPERATING DATA REPORT DOCKET NO.: 50-321 ,

DATE: APRIL 6, 1994 l COMPLETED BY: R. M. BEARD l

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OPERATING STATUS

1. UNIT NAME: E. I. HATCH - UNIT ONE-

2. REPORT PERIOD: MARCH 1994

3. LICENSED THERMAL POWER (MWt : 2436

4. NAMEPLATE RATING (GROSS MWe : 850

5. DESIGN ELECTRICAL RATING N T MWe : 776.3

6. HAXIMUM DEPENDABLE CAPACI Y GROS MWe): 774

7. MAXIMUM DEPENDABLE CAPACITY NET MWe): 741

8. IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS 3 THROUGH 7) SINCE LAST REPORT, GIVE REASONS: NO CHANGES

9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MWe): NO RESTRICTIONS

10. REASONS FOR RESTRICTION, IF ANY: N/A THIS MONTH YEAR-TO-DATE CUMULATIVE

11. HOURS IN REPORTING PERIOD: 744.0 2160 '159959-

12. NUMBER OF HOURS REACTOR WAS CRITICAL: 678.9 2094.9 120098.3

13. REACTOR RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0~

14. HOURS GENERATOR ON LINE: 673.0 2089.0 115045.6-

15. UNIT RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0

1630330 5071702 258180236

16. GROSS THERMAL ENERGY GENERATED (MWHt)He):

17. GROSS ELECTRICAL ENERGY GENERATED (MW 523440 1636030 82980360

18. NET ELECTRICAL ENERGY GENERATED (MWHe): 500216 1566755 78957249

19. UNIT SERVICE FACTOR: 90.5% 96.7% 71.9%

20. UNIT AVAILABILITY FACTOR: 90.5%- 96.7% 71.9%-

21. UNIT CAPACITY FACTOR USING MDC NET : 90.7% 97.9% 65.9%

22. UNIT CAPACITY FACTOR USING DER NET : 86.6% 93.4% 63.3%

23. UNIT FORCED OUTAGE RA E: 9.5% 3.3% 11.8%'

24. SHUTDOWNS SCHEDULED OVER THE NEXT 6 MONTHS (TYPE, DATE, AND DURATION OF EACH):

54 Day Refueling Outage tentatively scheduled for September 21, 1994.

25. IF SHUTDOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP:

Generator on line April 1, 1994.

26. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION): N/A El-2

PLANT E. I. HATCH - UNIT ONE DOCKET N0.: 50 '21-a DATE: APRIL 6, 1994 AVERAGE DAILY POWER LEVEL COMPLETED BY: R. M. BEARD.

TELEPHONE: (912) 367-7781 x2878 DAY Net MWe 1 .............. 749 2 .............. 749 3 .............. 755 4 .............. 753 5 .............. 753 6 .............. 752 7 .............. 748 8 .............. 747 9 .............. 743 10 .............. 750 11 .............. 759 12 .............. 755 13 .............. 671 14 .............. 752 15 .............. 752 16 .............. 754 17 .............. 757 18 .............. 751 19 .............. 752 20 .............. 751 21 .............. 747 22 .............. 749 23 .............. 749 24 .............. 745 25 .............. 717 26 .............. 744 27 .............. 742 28 .............. 744 29 .............. 0 30 .............. 0 31 .............. 0 l

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET N0.: 50-321 DATE: APRIL 6, 1994 UNIT NAME: E. I. HATCH - UNIT ONE COMPLETED BY: R. M. BEARD TELEPHONE: (912) 367-7781 x2878 REPORT MONTH: MARCH 1994 R H S E E Y T A T LICENSEE SC Y S H EVENT T0 COMPONENT CAUSE & CORRECTIVE' P DURATION 0 0 REPORT ED CODE ACTION TO NO. DATE E (HOURS) N D NUMBER HE (SUBCODE) PREVENT RECURRENCE 94-001 940329 F 71.0 A 3 94-003 HA GENERA A loss of Main Generator (X) field excitation led to a load rejection by-the Turbine-Generator System and resulted in an automatic reactor shutdown.

Field excitation was lost when arcing occurred between the Main Generator Exciter (MGE) brush rigging and one of the collector rings- on the MGE rotor. The primary cause for the arcing is believed- to be the stickin of a carbon brush in the. g brush rigging.

Corrective actions include replacing the damaged MGE rotor and increasing the frequency of brush inspection to a daily interval.

TYPE: REASON: METHOD: EVENTS REPORTED INVOLVE A GREATER THAN 20%

F-FORCED A-EQUIPMENT FAILURE (EXPLAIN) 1-MANUAL REDUCTION IN AVERAGE S-SCHEDULED B-MAINTENANCE OR TEST 2-MANUAL SCRAM DAILY POWER LEVEL FOR C-REFUELING 3-AUTOMATIC SCRAM THE PRECEDING 24 HOURS.

D-REGULATORY RESTRICTION 4-CONTINUATIONS E-0PERATOR-TRAINING & LICENSE 5-LOAD REDUCTION F-ADMINISTRATIVE 9-0THER (EXPLAIN)

G-0PERATIONAL ERROR (EXPLAIN)

H-0THER (EXPLAIN)

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4 Enclosure 2 Plant Hatch Unit 2 Monthly Operating Report March 1994 Table of Contents Page Narrative Report E2-1 Operating Data Report E2-2 Average Daily Power level E2-3 Unit Shutdowns and Power Reductions E2-4 1

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PLANT E. I. HATCH - UNIT TWO DOCKET NO: 50-366 DATE: APRIL 6, 1994 NARRATIVE REPORT COMPLETED BY: R. M. BEARD TELEPHONE: (912) 367-7781.x2878 MARCH 1 0000 Shift continued to maintain approximately 550 CMWe te monitor offgas activity and fuel performance.

MARCH 5 0147 Shift began reducing load to approximately 500 GMWe to perform Control Rod Drive Exercises.

MARCH 5 0409 Shift began ascension to 70% of rated thermal power.

MARCH 5 0445 70% of. rated thermal power was attained with unit load at approximately 550 GMWe.

MARCH 13 0021 Shift began reducing load to approximately 500 GMWe to perform-Control Rod Drive Exercises.

MARCH 13 0143 Shift began ascension to 70% of rated thermal power.

MARCH 13 0245 70% of rated thermal power was attained with unit load at approximately 550 GMWe.

MARCH 15 0600 Shift began reducing load in preparation for a unit shutdown.

sMARCH 16 0119 The unit entered the 11th Refueling Outage when shift removed the generator from the grid.

MARCH 31 2400 Personnel continued activities associated with the lith Refueling Outage.

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OPERATING DATA REPORT DOCKET N0: 50-366 DATE: APRIL 6, 1994 COMPLETED BY: R. M. BEARD TELEPHONE: (912) 367-7781 x2878 OPERATING STATUS:

1.-UNIT NAME: E. I. HATCH - UNIT TWO 2.. REPORTING PERIOD: MARCH 1994 MWt : 2436

3. LICENSED

4. NAMEPLATE THERMAL RATING (GROSS POWER (MWe : 850

5. DESIGN ELECTRICAL RATING (N T MWe): 784  ;

6. MAXIMUM DEPENDABLE CAPACITY (GROSS MWe): 798

7. MAXIMUM DEPENDABLE CAPACITY (NET MWe): 765

8. IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS 3 THROUGH 7) SINCE LAST REPORT, GIVE REASONS: NO CHANGES

9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MWe): NO RESTRICTIONS 1

-10. REASONS FOR RESTRICTION, IF ANY: N/A THIS MONTH YEAR-TO-DATE CUMULATIVE

11. HOURS IN REPORTING PERIOD: 744.0 2160 127585.

12. NUMBER OF HOURS REACTOR WAS CRITICAL: 361.8 1777.8 97518.0 13.' REACTOR' RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0

14. HOURS GENERATOR ON LINE: 361.3 1777.3 94003.3

15. UNIT RESERVE SHUTDOWN HOURS: 0.0 0.0 .

0.0

16. GROSS THERMAL ENERGY GENERATED (MWHt): 599920 3068906 206540780 17.-GROSS ELECTRICAL ENERGY GENERATED (MWHe): 192200 992470 67607210

18. NET ELECTRICAL ENERGY GENERATED (MWHe): 179435 938165 64372856

19. UNIT SERVICE FACTOR: 48.6% 82.3% 73.7%

20.- UNIT AVAILABILITY FACTOR: 48.6% 82.3% 73.7%

21. UNIT CAPACITY FACTOR USING MDC NET): 31.5% '56.8% 66.0%

22. UNIT CAPACITY FACTOR USING DER NET): '30.8% 55.4% 64.4%

23. UNIT FORCED OUTAGE RA E: 0.0% 0.0% 7.3%. i

'24. SHUTDOWNS SCHEDULED OVER THE NEXT 6 MONTHS (TYPE, DATE, AND OURATION OF EACH): N/A.

25. IF SHUTDOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP: N/A Generator on-line tentatively scheduled for April 27, 1994,

26. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION): N/A E2-2

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PLANT E. I. HATCH - UNIT TWO DOCKET NO: 366 DATE: APRIL 6, 1994 AVERAGE DAILY POWER LEVEL ' COMPLETED BY:' R. M. BEARD -l TELEPHONE: (912) 367-7781 x2878 DAY Net MWe 1 .............. 518 2 .............. 517 3 .............. 522 4 .............. 520 5 .............. 516 6 .............. 521 7 .............. 519 8 .............. 517 9 .............. 515 10 .............. 517 11 .............. 522 12 .............. 520 13 .............. 517 14 .............. 520 15 .............. 311 16 .............. 0 17 .............. 0 18 .............. 0 19 .............. 0 20 .............. 0 21 .............. 0 22 .............. 0 23 .............. 0-24 .............. 0 25 .............. 0 26 .............. 0 27 .............. 0 28 .............. 0 29 .............. 0 30 .............. 0 31 .............. 0 E2-3

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET N0: 50-366

, DATE: APRIL 6, 1994 UNIT NAME: E. I. HATCH - UNIT TWO COMPLETED BY: R. M. BEARD TELEPHONE: (912) 367-7781 x2878 REPORT MONTH: MARCH 1994 R M S E E Y T A T LICENSEE SC Y S H EVENT T0 COMPONENT CAUSE & CORRECTIVE P DURATION 0 0 REPORT ED CODE ACTION TO NO. DATE E (HOURS) N D NUMBER HE (SUBCODE) PREVENT RECURRENCE 94-002 940315 S 0.0 C 5 N/A RC FUELXX Shift began reducing power to shut down the unit for the 11th Refueling Outage.94-003 940316 S 382.7 C 2 N/A RC FUELXX The unit entered the lith Refueling Outage when the generator was removed from the grid.

TYPE: REASON: METHOD: EVENTS REPORTED' INVOLVE A GREATER THAN 20%

F-FORCED A-EQUIPMENT FAILURE (EXPLAIN) 1-MANUAL REDUCTION IN AVERAGE

'S-SCHEDULED B-MAINTENANCE OR TEST 2-MANUAL SCRAM DAILY POWER LEVEL FOR C-REFUELING 3-AUTOMATIC SCRAM THE PRECEDING 24 HvURS.

D-REGULATORY RESTRICTION 4-CONTINUATIONS E-OPERATOR TRAINING & LICENSE 5-LOAD REDUCTION F-ADMINISTRATIVE 9-0THER (EXPLAIN)

G-0PERATIONAL ERROR (EXPLAIN)

H-0THER (EXPLAIN)

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