HL-5393, Monthly Operating Repts for Apr 1997 for Ei Hatch Nuclear Plant Units 1 & 2

Monthly Operating Repts for Apr 1997 for Ei Hatch Nuclear Plant Units 1 & 2

ML20141D842
Person / Time
Site:	Hatch
Issue date:	04/30/1997
From:	Shannon Rogers, Sumner H SOUTHERN NUCLEAR OPERATING CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HL-5393, NUDOCS 9705200213
Download: ML20141D842 (12)

Text

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, lawis$mener seashorn Neeleer Veo Preskkert Operating Company. loc.

a-Hatch poject Support 40 invemess Parkway Post Office Box 1295 Birmingharn. Alabama 35201 Tel 205 932.7279 Fax 205 992.0341 SOUTHERN h COMPANY Energy to Serve YourWorld*

Docket Nos. 50-321 50-366 HL-5393 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 ,

Edwin I. Hatch Nuclear Plant Monthly Operatine Reports Gentlemen:

Enclosed are the April 1997 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 Technical Specifications requirements.

Sincerely,

'~

h H. L. Sumner, Jr.

CLT/eb

Enclosures:

1. April Monthly Operating Report for Plant Hatch Unit I /

2. April Monthly Operating Report for Plant Hatch Unit 2 cc: Southern Nuclear Operatine Comnany Mr. P. H. Wells, Nuclear Plant General Manager NORMS' U. S. Nuclear Reentatory Commission. Washington D. C.

Mr. K. Jabbour, Licensing Project Manager - Hatch U. S. Nuclear Regulatory Commission. Region 11 Mr. L. A. Reyes, Regional Administrator Mr. B. L. Holbrook, Senior Resident Inspector - Hatch ,

LMity Data Institute. Inc. -

n'QQQf7 Mr. Fred Yost, Director - Research Services 9705200213 970430 i llllllllll))'lll{ll PDR ADOCK 05000321 ,

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1 Enclosure 1 1

- Plant Hatch Unit 1 l Monthly Operating Report  ;

April 1997

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4 Table of Contents 4

P3ss l Narrative Repon El-1 f Operating Data Report El-2 l, Average Daily Power Level El-3 i

Unit Shutdowns and Power Reductions El-4 i

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PLANT E.1. HATCH - UNIT ONE DOCKET No.: 50-321  ;

DATE:MAY 2,1997 NARRATIVE REPORT COMPLETED BY: S. B. ROGERS TELEPHONE: (912) 367-7781 x2878 APRIL 1 0000 Shift continued to maintain rated thermal power.

APRIL 24 2345 Shift began reducing load to approximately 665 GMWe to remove the "B" Condensate Pump from service. The pump was removed from service to repair a leaking cooling coil on the upper bearing of the pump motor.

APRIL 25 0908 While repairs were being made to the "B" Condensate Pump motor, Shift began further reducing load to approximately 640 GMWe to perform Turbine Control Valve Testing, Control Rod Scram Time Testing, and a Control Rod Sequence Exchange.

. APRIL 26 0532 Shift began ascension to rated thermal power. Fuel preconditioning

' measures were implemented to prevent fuel degradation during ascension.

APRIL 26 1812 The unit attained rated thermal power.

APRIL 30 2400 Shift continued to maintain rated thermal power.

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1 DOCKET NO.: 50-321

- OPERATING DATA REPORT ']'

DATE: MAY 2,1997 .

COMPLETED BY: S.B. ROGERS

' TELEPHONE: (912) 367-7781 x2878 OPERATING STATUS

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

2. REPORT PERIOD: APRIL 1997

- 3. LICENSED THERMAL POWER (MWt): 2558  ;

4. NAMEPLATE RATING (GROSS MWe): 850'

. 5. DESIGN ELECTRICAL RATING (NET MWe): 822.1 )

6. MAXIMUM DEPENDABLE CAPACITY (GROSS MWe): 835 l

7. MAXIMUM DEPENDABLE CAPACITY (NET MWe): 800 i

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 i

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

11. HOURS IN REPORTING PERIOD: 719.0 2879 186982 l

12. NUMBER OF HOURS REACTOR WAS CRITICAL: 719.0 2786.1 :145018.9 l

13. REACTOR RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0 ,

14. HOURS GENERATOR ON LINE: 719.0 2758.6 139686.1

15. UNIT RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED (MWHt): 1816471 6995771 317310447

17. GROSS ELECTRICAL ENERGY GENERATED (MWHe): 597172 2296393 102159115 l

18. NET ELECTRICAL ENERGY GENERATED (MWHe): 573419 2203281 97286691  !

19. UNIT SERVICE FACTOR: 100.0 % 95.8 % 74.7 % l

20. UNIT AVAILABILITY FACTOR: 100.0 % 95.8 % - 74.7% i

21. UNIT CAPACITY FACTOR (USING MDC NET): 99.7 % 95.7 % 69.2% l

22. UNIT CAPACITY FACTOR (USING DER NET): 97.0% 93.1 % 66.7 % {

23. UNIT FORCED OUTAGE RATE: 0.0% 0.0% 10.0%

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

37 Day Refueling Outage tentatively scheduled for October 11,1997.  ;

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

26. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION): N/A j i

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PLANT E.1. HATCH - UNIT ONE DOCKET NO.: 50-321 1 i

DATE: MAY 2,1997 AVERAGE DAILY POWER LEVEL COMPLETED BY: S. B. ROGERS i i

TELEPHONE: (912) 367-7781 x2878 ,

. APRIL 1997 1

DAY Net MWe 1................... 811 2............................ 811 3,........................... 809 4 .. . . . ........... 808 5 . . . .. .. . . . . . . . 806 6 . . . . . . . . . . . 805 7 .... 806 8 . . ... . . . . . . . . . 807 9 . . . . . . . . . . . . . 808 10 .. . . . . . . . . . . . . . . . . . . . . . . . 811 11.................. 807 12........................ 804 13 .. .. . . . . . . . . . . . . . . . . . 807 14.......................... 810 15............ 812 16 .. . . . . . . . . . . . . . . . . . 810 17.......................... 809 18.................... 811 1 9 . . .. .. . . . . . . . . . . . . . . . 810 20.................... 807

21. . . . . . . . . . . . . . . . . . . 804 22..,,.................. 801 2 3 .. .... . . . . . . . . . . . . . 805 24 . .... . . . . . . . . . . . . . . . . 800 25.................... 613 26 . . . . .. . . . . .. . . . . . . . . . . 729 27......................... 800 2 8 .... .. . . . . . . . . . . . 798 29 . ... . . . . . 804 ,

30........................ 804 E1-3 1

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.: 50-321 DATE: MAY 2,1997 UNIT NAME: E.1. HATCH - UNIT ONE COMPLETED BY: S. B. ROGERS TELEPHONE: (912) 367-7781 x2878 REPORT MONTH: APRIL 1997 R M S E E Y T A T LICENSEE SC Y S H EVENT TO COMPONENT CAUSE & CORRECTIVE P DURATION O O REPORT ED CODE ACTION TO NO. DATE E (HOURS) N D NUMBER ME (SUBCODE) PREVENT RECURRENCE 97-003 970424 F 0.0 - A 5 N/A HH HTEXCH Shift reduced load to approximately (C) 665 GMWe to remove *B" Condensate Pump from service for repair of the motor cooling coil.

The motor cooling coilwas repaired and the unit was returned to rated thermal power.

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

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

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

G-OPERATIONAL ERROR (EXPLAIN)

H OTHER (EXPLAIN)

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7 Enclosure 2 Plant Hatch Unit 2 Monthly Operating Report Anril 1997 Table of Contents  ;

P_ age F

Ntfrative Report E2-1 Operating Data Repo 1 E2-2 Average Daily Power Level E2-3 Unit Shutdowns and Power Reductions E2-4 r

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CC-;KET NO.: 50-366

. PLANT E.1. HATCH - UNIT 1WO DATE: MAY 2,1997 NARRATIVE REPORT COMPLETED BY: S.B. ROGERS TELEPHONE: (912) 367-7781 x2878 APRIL 1 0000 Personnel continued activities associated with the 13th Refueling Outage.

l APRIL 2 0010 Fuel shuffle was completed.

APRll 18 0534 Shift began withdrawing control rods for unit startup.

APRIL 18 1046 Shift brought the reactor critical.

APRIL 20. 0940 Shift tied the Main Generator to the grid.

APRIL 20 1411 Shift removed the Main Generator from the grid for Turbine overspeed l

trip testing.

APRIL 20 1510 Shift tied the Main Generator to the grid and began ascension to I' rated thermal power.

APRIL 22 0623 During the functional test of the new feedwater control system, the unit experienced a runback of both Reactor Recirculation Pumps to Speed Limiter No.1 when a link was opened to simulate the loss of "B" feedwater flow signal. The runback placed the unit's power and flow conditions in the immediate Exit Region of the Power to Flow Map at 48% rated thermal power and 35% core flow.

APRIL 22 0625 Shift began actions to place the unit outside the immediate Exit Region of the Power to Flow Map.

APRIL 22 0658 Shift brought the unit to operating conditions outside the immediate Exit Region of the Power to Flow Map at approximately 55% rated thermal l

power and 52% core flow.

APRIL 22 1028 Shift began ascension to rated thermal power.

APRIL 22 1850 Shift began reducing load due to decreasing vacuum in the Main Condenser.

APRIL 22 1907 An automatic reactor scram occurred on Turbine Stop Valve Closure when the Mala Turbine tripped on low condenser vacuum. The High Pressure Coolant injection System (HPCI) and Reactor Core Isolation Cooling Syste.n (RCIC) automatically initiated and injected into the vessel to restore reactor water level.

APRIL 24 1230 Shift began withdrawing control rods for unit startup.

AFRIL 24 2225 Shift brought the reactor critical.

APRll 25 1710 Shift tied the Main Generator to the grid and began ascenrion to rated thermal power.

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PLANT E.1. HATCH - UNIT TWO DOCKET NO.: 50-366 DATE: MAY 2,1997 NARRATIVE REPORT COMPLETED BY: S. B. ROGERS TELEPHONE: (912) 367-7781 x2878 APRIL 27 0015 Shift began reducing load to approximately 570 GMWe in preparation for removing "B" Condensate Booster Pump from service after receiving a high temperature alarm on the outboard bearing.

l APRIL 27 0050 Shift began ascension to rated thermal power after investigation revealed that the bearing high temperature alarm was false.

APRIL 28 1217 Shift began reducing load to approximately 630 GMWe to perform.a Control Rod Pattem Adjustment.

APRIL 28 1800 Shift began ascension to rated thermal power.

APRll 29 0323 The unit attained rated thermal power.

APRIL 30 2400 Shift continued to maintain rated thermal power.

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' OPERATING DATA REPORT DOCKET NO.: 50-366 DATE: MAY 2,1997 T- . COMPLETED BY: S. B. ROGERS .

1- TELEPHONE: (912) 367-7781 x2878

' OPERATING STATUS ,

1. UNIT NAME: E. l. HATCH - UNIT TWO j 3.

~ 2. REPORT PERIOD: APRIL 1997  ;

e 3. LICENSED THERMAL POWER (MWt): 2558 j J. 4. NAMEPLATE RATING (GROSS MWe): . 850  :

5. DESIGN ELECTRICAL RATING (NET MWe): 784

' 6. MAXIMUM DEPENDABLE CAPACITY (GROSS MWe): 853 l

818

7. MAXIMUM DEPENDABLE CAPACITY (NET MWe):

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  !

i THIS MONTH YEAR-TO-DATE CUMULATIVE'  !

11. HOURS IN REPORTING PERIOD: 719.0' 2879 154608 l

12. NUMBER OF HOURS REACTOR WAS CRITICAL: 249.9 2002.4 121161.1 i

13. REACTOR RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0  !

!- 14. HOURS GENERATOR ON LINE: 183.3 1935.4 117226.0 l

15. UNIT RESERVE SHUTDOWN HOURS: 0.0 -0.0 0.0 l 4' 343046 4772191 262998925 j

16. GROSS THERMAL ENERGY GENERATED (MWHt):

17. GROSS ELECTRICAL ENERGY GENERATED (MWHe): 107801- 1593176 86348639 i

18. NET ELECTRICAL ENERGY GENERATED (MWHe): 96635 1517497 82296659 ,

19. UNIT SERVICE FACTOR: 25.6 % 67.2% 75.8% i j- 20. UNIT AVAILABILITY FACTOR: 25.6% 67.2% 75.8% j

21. UNIT CAPACITY FACTOR (USING MDC NET): 16.4% 64.4 % 69.2% l e

22. UNIT CAPACITY FACTOR (USING DER NET): 17.1% 67.2% 67.9% -l 4 23. UNIT FORCED OUTAGE RATE: 27.5% 3.5% 6.5%

24. SHUTDOWNS SCHEDULED OVER THE NEXT 6 MONTHS (TYPE, DATE, AND DURATION OF EACH): N/A 1

25. IF SHUTDOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP: N/A  !

26. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATIOS.",: N/A l

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. PLANT E. I. HATCH - UNIT TWO DOCKET NO.: 50-366 DATE: MAY 2,1997 ,

AVERAGE DAILY POWER LEVEL ' COMPLETED BY: S. B. ROGERS TELEPHONE: (912) 367-7781 x2878 APRIL 1997 DAY NetMWa t 1..................... O I 2 . ... O  !

l 3...................... 0 4 4....................... 0 5........ . . . . . . . . 0 6...................... 0 7 .. .. . . . . . . . . . . . . . . . . . . . 0 8....................... 0 9.. . . . . . . . . . . . . . . . 0 10 . . . ...... . . . . . . . . 0 11......................... 0 12 . .. ... ... . 0 13..... . . . . . . 0 14.. ......... . .. 0 1 5 .. . . . . . . . . .. .. .. 0 16...... . 0 ,

17 .. . . . . . . . . . .. 0 18 .. .. . . . . . . . . . . . . . . 0 1 9 . . . . . . . . .. . . . O  !

2 0 .. .. . . . . . . . . . . 79

21. . . . . . . . . ... 262 22.. ...... . . . . . . . . 351 <

23. . . . . . . . . . . .... 0 24 .. . . . .. . . . . . . . 0 I

2 5 .. . . . . . . . . . . . . . . 30 26 . .. . . . . . . . . .. . .. 427 i 27....... .... .. 733 28 .. .. . . . . . . .. . 711 29 . . . . . . . . . . .. 818 30... .. . . . . 819  ;

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l UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.: 50-366 DATE: MAY 2,1997 UNIT NAME: E. l. HATCH - UNIT TWO COMPLETED BY: S. B. ROGERS TELEPHONE: (912) 367-7781 x2878 REPORT MONTH: APRIL 1997 R M S E E Y i T A T LICENSEE SC Y S H EVENT TO COMPONENT CAUSE & CORRECTIVE P DURATION O O REPORT ED CODE ACTION TO ,

NO. DATE E (HOURS) N D NUMBER ME (SUBCODE) PREVENT RECURRENCE 97-003 970315 S 464.67 C 4 N/A RC FUELXX Activities associated with the 13th Refueling Outage continued.97-004 970420 S .98 B 5 N/A HA TURBIN The generator was removed from the grid for turbine overspeed i trip testing.97-005 940422 F 70.05 H 3 97-007 HF HTEXCH An automatic reactor scram (D) occurred from Turbine Stop Valve i Closure when the Main Turbine  :

tripped on low condenser vacuum.

HPCI and RCIC automatically initiated and injected into the vessel to restore water level.  !

Cause of the low condenser vacuum and corrective actions to prevent  !

recurrence are still under investigation. ,

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

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

S-SCHEDULED BAAAINTENANCE OR TEST 2-MANUAL SCRAM DAILY POWER LEVEL FOR C-REFUELING 3-AUTOMATIC SCRAM THE PRECEDING 24 HOURS.

D-REGULATORY RESTRICTION 4-CONTINUATIONS  !

E-OPERATOR TRAINING & LICENSE 5-LOAD REDUCTION F-ADMINISTRATIVE 9CTHER (EXPLAIN) ,

G4PERATIONAL ERROR (EXPLAIN) I H-OTHER (EXPLAIN)

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