ML20151V776

Monthly Operating Rept for Jul 1988 for Vogtle Unit 1.W/

ML20151V776
Person / Time
Site:	Vogtle
Issue date:	07/31/1988
From:	Dilworth S, Hairston W GEORGIA POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
VL-14, NUDOCS 8808230002
Download: ML20151V776 (8)

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l GEORGIA POWER  ;

COMPANY MONTHLY OPERATING DATA REPORT PLANT V0GTLE UNIT 1*

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' ENCLOSURE

TABLE OF CONTENTS  ;

PLANT V0GTLE - UNIT 1 1 NRC DOCKET 50-424-  :

TERATING LICENSE PFF-68

. MONTHLY OPERATING-REPORT-July,' 1988 i

NARRATIVE REPORT Page -1 -l OPERATING DATA REPORT Page E-2 a AVERAGE DAILY POWER LEVEL Page E-3 UNIT SHUTDOWNS AND POWER REDUCTIONS Page E-4 i

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i NARRATIVE REPORT DOCKET NO. 50-424 UNIT 1 DATE: AUGUST 3, 1988

-COMPLETED BY: S.C. DILWORTH TELEPHONE: (404) 724-8114 x3870 JULY 1 00:00 UNIT OPERATING AT 100% POWER WITH NO OPERATING PROBLEMS.

JULY 14 10: 01 TURBINE TRIP / 4EACTOR TRIP. ENTERED MODE 3.

JUL/ 15 15:16 ENTERED MODE 2.

JULY 15 15:55 REACTOR CRITICAL.  ;

JULY 15 21:23 ENTERED MODE 1. l JULY 17 04:14 UNIT TIED TO GRID.  !

JULY 18 05:32 UNIT AT 100% POWER WITH NO SIGNIFICANT OPERATING PROBLEMS. '

JULY 30 15:24 GENERATOR / REACTOR TRIP. ENTERED MODE 3.  !

JULY 31 11:04 ENTERED MODE 2. .

JdLY 31 12:00 REACTOR CRITICAL. l JULY 31 15:16 ENTERED MODE 1. j JULY 31 19:43 UNIT TIED TO GRID. i JULY 31 20:14 REACTOR TRIP. ENTERED MODE 3.  !

JULY 31 24:00 REACTOR IN MODE 3 AT THE END OF MONTH. l 1

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OPERATING DATA REPORT DOCKET NO. 50-424 DATE: AUGUST 3, 1988 COMPLETED BY: S.C. DILWORTH TELEPHONE: (404) 724-8114 x3870 OPERATING STATUS

1. UNIT NAME: A. W. V0GTLE UNIT t-

2. REPORT PERIOD: JULY, 1988

3. LICENSED THERMAL POWER (MWt): 3411

4. NAMEPLATE RATING (8ROSS MWe): 1157

5. DESIGN ELECTRICAL RATIN8 (NET MWa): 1101

6. MAXIMUM DEPENDABLE CAPACITY (GROSS MWe): 1122

7. MAXIMUM DEPENDABLE CAPACITY (NET MWe): 1079

8. !F CHAN8ES OCCUR IN CAPACITY RATINGS (ITEMS 3 THROU8H 7) SINCE LAST REPORT, GIVE REASONS

9. PCWER LEVEL TO WHICH RESTR!CTED, IF ANY (NET MWe): 'NO RESTR!CTIONS

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

11. HOURS IN REPORTING PERIOD: 744 5111 10248

12. NUMBER OF HOURS REACTOR WAS CRITICAL: 700.7 4389.7 8442.5

13. REACTOR RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0 4

14 HOURS GENERATOR ON-LINE: 654.7 4277.3 8197.9

15. UNIT RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED (MWH): 2220349 14312910 26973958.4

17. GROSS ELEC. ENERGY GENERATED (MWH): 724510 4753730 8937710

18. NET ELEC. ENERGY GENERATED (MWH): 684870 4489460 8410980

19. REACTOR SERVICE FACTOR 94.2% 85.9% 82.4%

20. REACTOR AVAILABILITY FACTOR 94.2% 85.9% 82.4%

21. UNIT SERVICE FACTOR: 88.0% 83.7% 80.0%

22. UNIT AVAILABILITY FACTOR: 88.0% 83.7% 80.0%

23. UNIT CAPACITY FACTOR (USING MDC NET): 85.3% 81.4% 76.0%

24. UNIT CAPACITY FACTOR (USIN8 DER NET): 83.6% 79.8% 74.5%

25. UNIT FORCED OUTA8E RATE: 12.01 15.5% 17.4%

26. SHUTDOWNS SCHEDULED OVER THE NEXT 6 HONTHS (TYPE, DATE, AND DURATION OF EACH) REFUELING -

OCTOBER 7 - 44 DAYS. ,

27. IF SHUTDOWN AT END OF REPORT PERIOD, EST! MATED OATE OF STARTUP: AU8UST 2,1988

28. UNITS IN TEST STATUS ( PRIOR TO COMMERCIAL OPERATIONis N/A I

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- 4 UNIT 1 AVERAGE DAILY DOCKET NO. 50-424 POWER LEVEL DATE: AUGUST 3, 1988 JULY, 1988 COMPLETED BY S. C. DILWORTH TELEPHONE: (404) 724-8114 x3870 i

DAY Nst MW j 1 ......... 1077 y 2 ......... 1081

• l 3 ......... 1000 + 1 4 ......... 1077 .I 5 ......... 1076 l 6 ......... 1077 7 ......... 1077 ,

8 ......... 1068 l 9 ......... 1066 l 10 ......... 1061 1 11 ......... 1062 l 12 ......... 1060 l

. 13 ......... 1065 j 14 ......... 823 1 15 ......... 0 l 16 ......... O I 17 ......... 452 18 ......... 1055 19 ......... 1063 20 ......... 1063 21 ......... 1067 22 ......... 1075 23 ......... 1074 24 ......... 1074 25 ......... 1074 26 ......... 1072 27 ......... 1071 20 ......... 1067 29 ......... 1063 30 ......... 664 31 ......... 0

• MDC CAN SE EXCEEDEO UNDER OPTIMAL CONDITIONG i

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-424 DATE: AUGUST 3, 1998 UNIT NAME: V0GTLE UNIT 1 COMPLETED BY: S. C. DILWOR7H TELEPHONE: (4041 724-8114 x3870  !

REPORT MONTH JULY, 1998 1 I i 1 1E!E1 Y  ! I t i I ITI I A I T ILICENSEEl S C I I t i I IYl 1S1HI EVENT ! T 0 ICOMPONENil CAUSE h CORRECTIVE I I I I P IDURATIONI O 1 0 : REPORT ! E D i CODE I ACTION TO I l NO. t DATE I E (HOURS) ! N D: NUMBER ! M E 1(SUBCODE)I FAEVENT RECURRENCE I l ii-9---lJUCfili-l-'sirii-li-l~i-l-~s7A'-~!iC--l-XPi"~~~iii"5iE05~~~~~~~~~~~~~~

l88-10 IJUL 301 F I 28.J2 A : 3! N/A I FK  ! INS ISEE BELOW- 1 198-11 IJUL 311'F I 3.77 !Hi31 N/A I AA {

I ECBD ISEE BELOW l l 1.......l...,_,l _,1.......,1. ,t __1 ______,1 _,,_l ..,_____1. ,__,,,________,,,,,,,,,,,,,1 F: FORCEO REASON: METHOD: EVENIS REPOR1ED INVOLVE i St SCHEDULED A-EOUIPMENT. FAILURE (EXPLAIN) 1 - MANUAL A GREATER THAN 20%  !'

B-MAINTENANCE OR TEST 2 - MANUAL SCRAM REDUCTION IN AVERAGE C-REFUELING 3 - AUTO. SCRAM DAILY POWER LEVEL FOR D. REGULATORY RESTRICTION 4 - CONTINUATIONS THE PRECEEDING 24 HOURS.

E-OPERATOR TR4INING k LICENSE 5 - LOAD REDUCTION F-ADMINISTRATIVE 9 - OTHER (EXPLAIN)

G-OPEEATIONAL ERROR (EXPLAIN) i H-0THER (EXPLAIN) l 98-9 CAUCE:

THE DIRECT CAU9E OF THIS EVENT 'S ATTRIBUTED TO A FAILURE OF A '

POTENTIAL TRANSFORMER (2A), WHICH CAUSED A PRIMARY SIDE FUSE TO '

FMIL. THE RESULTANT TRANSIENT CAUSED THE GENEAREX VOLTAGE REGULATOR TO INCREASE GENERATOR VOLTAGE TO THE VOLTS / HERTZ RELAY TRIP SETPOINT, WHICH SUBSEQUENTLY INITIATED A 6ENERATOR/ TURBINE / REACTOR TRIP.

98-9 CORRECTIVE ACTIONS:

THE FOLLOW'ING ITEMS WERE REPLACED: ALL PRIMARY ?OTENTIAL TRANSFOR FUSES, POTENTIAL TRANSFORMER 2A AND THE MALFUNCT!ON!NB CIRCUIT 90ARDS IN THE GENERREX SYSTEM. ALSO THE SENERREX SYSTEM NILL BE READJUSTED AND TESTED OURING THE FALL OUTAGE. THE FAILED COMPONEMTS ARE BEING EVALUATED FOR POSSIBLE ADDITIONAL CORRECTIVE ACTIONS. ,

88-10 CAUSE:

Tht CAUSE OF THIS EVENT WAS THE FAILURE OF A CONNECTION POINT DN DISCONNECT SWITCH 8161716 FOR PHASE 'A'. THE CONNECTION WAS BELIEVED TO BE LGOSE, CAUSING ARCING AND A HOT SPOT, WHICH RESULTED IN THE FAILURE OF THE INSULATOR CREATING A DIRECT PATH TO GROUND. THE CABLE MELTED AT THE DISCONNECT SWITCH AND SEPARATED.

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UNIT SHUTUOWNS AND POWER REDUCTIONS (CONTINUED)

'88-10 CORRECTIVE ACTIONS: TliE FAILED INSULATOR AND HARDWARE AT THE CONNECTION POINT WERE i REPLACED. AN INFRARED STUDY WAS CONDUCTED ON ALL SIMILAR CONNECTION POINTS. AN ENGINEERING STUDY KAS BEEN INIATIATED TO EVALUATE WHETHER ANY ADDITIONAL SUPPORT IS NEEDED.

i 08-11 CAUSE: THE DIRECT CAUS~ OF THE REACTOR TRIP WAS DUE TO A NEGATIVE FLUX RATE. '

f THUNDERSTORM WAS IN PROGRESS AND LIGHTNING STRUCK THE CONTAINMENT BUILDING. A POWER SURSE TO THE CONTROL ROD ORIVE SYSTEM RESULTED IN A LOSS OF POWER AND ALL RODS INSERTED.

98-11 COCRECTIVE ACTIONS: THE SUPERVISORY LOGIC 3 CARD IN THE LOGIC CABINFT WAS i REPLACED. ENGINEERING IS EVALUATING Tl!E SURGE PROTECTION SYSTEM TO DETERMINE HOW IT CAN BE IMPROVED.

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foorgia Power Company J33 Pedmont Avenue

[ At!anta. Georg'a 3030a Telephone 404 5264526 Maihng Address:

Post Office Bcx 4545 A :an;a, Georgia 30302 Georgia Power Nuclear Operations Departenent """*"'#*"'*"

VL-14  ;

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X7GJ17-YS10 August '12,1988 Director, Office of Resource Management i U. S. Nuclear Regulatory Comission i Washington, D.C. 20555 l l

PLAN 1 V0GTLE - UNIT 1  !

NRC DOCKET 50-424 l

ODERATING LICENSE NPF-68 l MONTHLY OPERATING REPORT j Gentlernen:

Enclosed is the Monthly Operating Report for Vogtle Unit 1 for {

July,1988 Thic report is submitted in accordance with the requirements l of Technical Specification Section 6.8.1.5.

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Sincerely,

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W. G. Hairston, III I Senior Vice President, 1 Nuclear Operations '

JAErlo

Enclosure:

1. Yogtle Unit 1 Monthly Operating Report for July,1988 l c: Georgia Power Company Mr. P. D. Rice Mr. G. Bockhold, Jr.

GO-NORMS U. S. Nuclear Regulatory Connission Dr. J. N. Grace, Regional Administrator Mr. J. B. Hopkins, Licensing Project Manager, NRR (2 copies)

Mr. J. F. Rogge, Senior Resident Inspector-Uperations, Yogtle JGN i i i

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