ML20154J396

Monthly Operating Rept for Apr 1988

ML20154J396
Person / Time
Site:	Vogtle
Issue date:	04/30/1988
From:	Dilworth S, Mcdonald R GEORGIA POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
SL-4661, NUDOCS 8805260332
Download: ML20154J396 (7)

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GEORGIA POWER

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l MONTHLY OPERATING DATA REPORT PLANT V0GTLE UNIT 1*

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' Georgia Power b ENCLOSURE-TABLE OF CONTENTS PLANT V0GTLE - UNIT 1 NRC DOCKET 50-424 OPERATING LICENSE NPF-68 HONTHLY OPERATING REPORT Aori l . 1988 NARRATIVE REPORT Page E-1 OPERATING DATA REPORT Page E-2  !

AVERAGE DAILY POWER LEVEL Page E-3  !

UNIT SHUTDOHNS AND POWER REDUCTIONS Page E-4

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.s NARRATIVE REPORT DOCKET NO. 50-424 UNIT 1 DATE: MAY 3,1988 COMPLETED BY: S.C. DILWORTH TELEPHONE: (404) 724-8114 x3070 APRIL 1 00:00 UNIT OPERATING AT 100% POWER WITH NO OPERATING PROBLEMS.

APRIL 7 08:46 REACTOR TRIP DUE TO TURBINE TRIP, TURBINE TRIP ON HIGH STATOR COOLING TEMPERATURE.

APRIL 8 01:25 MANUALLY TRIPPED MAIN TURBINE AND OPENED REACTOR TRIP BREAKERS.

PLANT STILL IN MODE 3 FROM PREVIOUS TRIP.

APRIL B 23: 40 UNIT 1 ENTERED MODE 2.

APRIL 9 00:17 UNIT 1 REACTOR IS CRITICAL.

APRIL 9 03:17 UNIT 1 ENTERED MODE 1.

APRIL 9 11:03 UNIT 1 TIED TO GRID.

APRIL 10 15:52 UNIT 1 OPERATING AT 100% POWER WITH NO OPERATINS PROBLEMS.

APRIL 20 10:00 NI-41 INOPERABLE. REDUCED POWER TO 98%.

APRIL 20 13:05 INCREASING POWER TO 100%.

APRIL 20 15:00 OPERATING AT 100% POWER WITH NO OPERATING PROBLEMS.

APRIL 24 09:22 MANUAL REACTOR TRIP DUE TO STEAM GENERATOR 84 LEVEL AT 42%. LOOP 4 MAIN FEEDWATER ISOLAT!ON VALVE NOT RESPONDING TO OPEN SIGNAL.

APRIL 27 11:45 UNIT 1 ENTERED MODE 2.

APRIL 27 12:15 UNIT 1 REACTOR IS CRITICAL.

APRIL 27 21:09 UNIT 1 ENTERED MODE 1.

APRIL 29 03:37 UNIT 1 T!ED TO GRID.

APRIL 29 04:00 UNIT 1 OPERATING AT 100% POWER WITH NO OPERATING PROBLEMS.

APRIL 30 24: 00 UNIT 1 OPERATING AT 100% POWER WITH NO OPERATING PROBLEMS.

SUMMARY

REPORT UNIT 1 THE FOLLOWING ITEMS WERE MODIFIED AND OR REPA! RED DURING THE OUTAGES. ALL WERE CRITICAL PATH ITEMS AND ARE LISTED IN THE ORDER THEY OCCURREC.

1. THE ONLY CRITICAL PATH ITEM FOR THE OUTAGE ON APRIL 7 WAS REPLACEMENT OF THE UNDERSIZED LINKAGE SHAFT WITH THE CORRECT S!!E SHAFT ON VALVE ITCV-6000

2. THE CRITICAL PATH ITEMS FOR THE OUTAGE ON APRIL 24 INCLUDED REPLACEMENT OF FOUR RELAYS, TWO ABASTAT T!MERS AND TWO AIR SOLEN 0!DS. ON APRIL 26, TRANSFORMER NB-10 WAS SHORTED OUT AND WAS REPLACED WITH TRANSFORMER ANB06, WHICH BECAME THE CRITICAL PATH ITEM.

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

1. UNIT NAME: A. W. V06TLE UNIT 1

2. REPORT PERIOD: APR 98

3. LICENSED THERMAL POWER (MWt): 3411

4. NAMEPLATE RATING (6ROSS MWe): 1157

5. DESIGN ELECTRICAL RATINS (NET MWe): 1101

6. MAXIMUM DEPENDABLE CAPACITY (6ROSS MWe): 1133

7. MAXIMUM DEPENDABLE CAPACITY (NET MWe): 1079

8. IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS 3 THROUGH 7) $1NCE LAST REPORT, SIVE REASONS:

9. POWER LEVEL TO WHICH RESTRICTED, 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: 719 2903 8040

12. NUMBER OF HOURS REACTOR WAS CRITICAL: 604.6 2224.9 6277.8

13. REACTOR RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0

14. HOURS GENERATOR ON-LINE: 578.5 2150,6 6079.2

15. UNIT RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED (MWH): 1907244 7116240 19777287.8

17. GROSS ELEC. ENERGY GENERATED (MWH): 635710 2371050 6555030

18. NET ELEC. ENERGY GENERATED (MWH): 598280 2224740 6146260

19. REACTOR SERV!CE FACTOR 84.1% 76.6% 78.1%

20. REACTOR AVAILIBILITY FACTOR 84.1% 76.6% 78.1%

21. UNIT SERV!CE FACTOR: 80.5% 74.4% 75.6%

22. UNIT AVAILABILITY FACTOR: 80.5% 74.4% 75.6%

23. UNIT CAPACITY FACTOR (USING MDC NET): 77.1% 71.0% 70.8%

24. UNIT CAPACITY FACTOR (USINS DER NET): 75.6% 69.6% 69.4%

25. UNIT FORCED OUTAGE RATE: 19.5% 24.4% 21.3%

26. SHUTDOWNS SCHEDULED OVER THE NEXT 6 MONTHS (TYPE, DATE. AND DUPATION OF EACH) REFUELING OUTAGE SEPTEMBER 18, 1988 50 DAYS.

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

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

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ed UNIT 1 AVERAGE DAILY DOCKET NO. 50-424 POWER LEVEL DATE: MAY 3.1988 COMPLETED SY S. C. DILWORTH TELEPHONE: (404) 724-8114 x3870 DAY- Net MW 1 ......... 1087 2 ......... 1045 3 ......... 1083 4 ......... 1083 5 ......... 1091 6 ......... 1092 7 ......... 374 0 ......... 0 9 ......... 187 10 ......... 963 11 ......... 1088 12 ......... 1090 13 ......... 1089 14 ......... 1090 15 ......... 1084 16 ......... 1093 i 17 ......... 1089 18 ......... 1088 19 ......... 1085 20 ......... 1082 21 ......... 1086 22 ......... 1086 23 ......... 1087 24 ......... 396 25 ......... 0 26 ......... 0 27 ......... 0 28 ......... 444 29 ......... 1083

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-424 DATE: MAY 3,1988 UNIT NAME: V0GTLE UNIT 1 COMPLETED BY: S. C. DILWORTH TELEPHONE: (404) 724-8114 r3870 REPORT MONTH APR 99 I I I I IR1 M !S I 1 1 I I I I IE1 EI I Y  ! I i

! I ITI I AI T !LICENSEEl S C i 1 1 1 1 IYI 1S H EVENT 1 T 0 !COMPONENTI CAUSE & CORRECTIVE I I I I P IDURATIONI O 0 REPORT I E D 1 CODE I ACTION TO I I NO. I DATE I E f(HOURS) !N : 0: NUMBER I M E 1(SUBCODE)I PREVENT RECURRENCE I l 55~f'l556I6ft'F'!"56I25'l'6"~5':"57d~l'T3'~l"TCV""lS55' BEL 65""""'""""

I 88-8 18804241 F I 90.25 i A l 2: N/A I SJ  ! ISV ISEE BELOW l l I I I 1 1 1, I I I  !......l...l........l...l...l........l.....l.........l.............................I F FORCED REASON: METHOD: EVENTS REPORTED INVOLVF.

St SCHEDULED A-EQUIPMENT 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 - CONT!NUATIONS THE PRECEEDING 24 HOURS.

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

G-OPERATIONAL ERROR (EXPLAIN)

H-0THER (EXPLAIN) 88-7 CAUSE: THE CAUSE OF THIS EVENT IS A FAILURE OF A LINKAGE SHAFT ON STATOR COOLING VALVE (1TCV-6000) TEMPERATURE CONTROLLER. V!BRATION OF UNDERLYING EQUIPMENT SK!D LED THE UNDERS!!ED LINKAGE SHAFT TO STRIP THE ENGAGED THREADS AND DROP OUT OF A NYLON THUMB NUT, GIVING A SIGNAL FOR ITCV-6800 TO CLOSE.

BB-7 CORRECTIVE ACTION: IMMEDIATE CORRECTIVE ACTION INCLUDES REPLACEMENT OF THE UNDERSIZED LINKAGE SHAFT WITH THE CORRECT S!!E SHAFT. .

98-9 CAUSE: REACTOR OPERATOR MANUALLY TRIPPED THE REACTOR IN ANTICIPATION OF AN AUTOMATIC TRIP DUE TO STEAM GENERATOR 84 LEVEL AT 421. OPERATORS WERE MANUALLY UNABLE TO OPEN LOOP 44 MAIN FEEDWATER ISOLATION VALVE.

THE VALVE WOULD NOT RESPOND TO AN OPEN SIGNAL.

98-8 CORRECTIVE ACTION: THE CORRECTIVE ACTION WAS TO REPLACE THOSE COMPONENTS WHICH ACTIVATE THE LOOP #4 MAIN FEEDWATER ISOLATION VALVE. THEY INCLUDE: FOUR RELAYS, TWO AGASTAT TIMERS AND TWO AIR SOLEN 0 IDS.

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AtiaMa, Gec<g'a 30308

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R. P. Mc Donstd 1% $<Xtfco 6xBC 5rstem Esecutw Oce PresdeN tiacita 0;41stans SL-4661 0080m X7GJ17-V510 May 16, 1988 Director, Office of Resource Management  :

U. S. Nuclear Regulatory Commission Washington, D.C. 20555 ..

PLANT V0GTLE - UNIT 1 NRC 00CKET 50-42 4 OPERATING LICENSF NPF-68 HONTHLY OPERAT 9G REPORT Gentlemen:

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

April, 1988. This report is submitted in accordance with the requirements of Technical Specificaticn Section 6.8.1.5.

Sincerel3b I.P. Mcdonald ( .

6 JAE/Im

Enclosure:

1. Vogtle Unit 1 Monthly Operating Report for April, 1988 c: Georaia Power Comoany Mr. P. D. Rice Mr. G. Bockheid, Jr.

GO-NORMS U. S. Nuclear Reculatory Commission .

Dr. J. N. Grace, Regional Administrator Mr. J. B. Hopkins Licensing Project Manager, NRR (2 copies)

Mr. J. F. Rogge Senior Resident Inspector-0perations, Vogtle l

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