Text

Monthly Operating Repts for Jul 1990 for Limerick Generating Station Units 1 & 2
	ML20058P166
Person / Time
Site:	Limerick
Issue date:	07/31/1990
From:	Meck K; PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	;
Shared Package
ML20058P129	List: ML20058P126; ML20058P166; ML20058P179;
References
	NUDOCS 9008160105
	Download: ML20058P166 (9)
	v • d • e

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. ; ... a 3902092810 i

f Docket No. #50 352 N Attachment to Monthly )

Operating Report for !

July 1990.

UMERICK GENERATING STATION

, - UNIT 1 ',

. JULY 1 THROUGH JULY 31,1990.

l. NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES l Limerick Unit 1 began the raonth of July at a nominal 7% of rated thermal power. On July 3 at 0330 hours0.00382 days 0.0917 hours 5.456349e-4 weeks 1.25565e-4 months , the main turbine generator was synchronized to the grid. On June 5, the reactor achieved -

100% of rated thermal power.' On July 6, reactor power was briery reduced to 95% for a control j

rod patten adjustment. On July 9, reactor power was briefly reduced to 98% of rated thermal pnwer due to high turbine back pressure. - On July 12, reactor power was briefly reduced to 95% for a contrca rod pattern adjustment. On July 15, reador power was briefly reduced to 98% due to high turbine back pressure. On July 20 and 27, reactor power was briefly reduced to 95% for a control ,

rod pattom adjustment. Limerick Unit 1 ended the month of July at a nominal 100% of rated thermal power.

Operational events that c arred during the month of July included:

- On July 5, during the performarx:e of the Standby Gas Treatment System (SGTS) ,

flow test the Reactor Water Cleanup (RWCU) System isolated. The isolation was '

due to a RWCU regenerative heat exchanger room high temperature signal used-for steam leak detection. Thc high temperature signal was created by several small steam leaks in the room in conjunction with the ventilation isolation necessary to perform the SGTS flow test. A four-(4) hour notification was made for an Engineered Safety Feature (ESF) actuation.

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11. CHALLENGES TO THE MAIN STEAM SAFETY RELIEF VALVES l

There wem no challenges to the Main Steam Safety Relief Valves during the month of July, i-

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'9008160105 900809 PDR R ADOCK 05000352 l PDC

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- AVERJ.GE DAILY UNIT POWEA LEVEL, '

DOCKET NO. 50 - 352 ,

UNIT LIMERICK UNIT 1 [

DATE AUGUST.3. 1990 COMPANY PHILADELPHIA ELECTRIC COMPANY KARL MECK REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320

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MONTH JULY.1990 ,

DAY AVERAGE DAILY POWER LEVEL DAV - AVERAGE DAILV'. POWER LEVEL (MWE-NET) (MWE-NET) 1 0 17 1013 2 'b' 18 1006 .

~~..

3

-267 .19 1008 4 "833 20 - 1006 5 940 21 1012 6 1016 22 .1001

-7 1026- 23 996 t _1018 24 1021 9 992 25 1007 10 1007 26 1019 11 1038 27 -1013 12 997 28 "1017 13 1D33 29 1020 14 -1026 '3C 1014 15 1004 31 1016 16 1012 4

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OPEQ$ TING DATO CEPORT - ,

DOCxET NO. So - 352 DATE AUGUST 3 1990 39020928101 ..[

-COMPLETED BY PHILADELPHIA ELECTRIC COMPANY KARL MECK REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 OPERATING STATUS

1. UNIT NAMES. LIMERICK UNIT 1 l NOTES: THERE WERE NO LOAD REDUCTIONS l

2. REPORTING PERIOD: JULY. 1990 GREATER THAN 20% AFTER THEs l'

3. LICENSED THERMAL POWER (MWT):' 3293 ) UNIT WAS RETURNED TO SERVICE.

l 4 NAMEPLATE RATING (GROSS WWE): 1138 1 l

S. DESIGN ELECTRICAL RATING (NET MWE): 1055 1 g

6. MAXIMUM DEPENDABLE CAPACITY (GROSS MWE): 1092 1 l

7. dAXIMUM DEPENDABLE CAPACITY (NET MWE): 1055 l

8. IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS NUMBER 3 THROUGH 7) SINCE LAST REPORT. GIVE REASONSi

9. POWER LEVEL TO WHICH RESTRICTED. IF ANY (NET MWE):

10. REASONS FOR RESTRICTIONS. IF-ANY:

THIS MONTH YR-TO-DATE CUMULATIVE

11. HOURS IN REPORTING PERIOD 744 '5.087 39.e07

12. NUMBER OF HOURS REACTOR WAS CRITICAL 744.0 4.599.9 31.728.7

13. REACTOR RESERVE SHUTDOWN HOURS OO O.0 0.0 14 HOURS GENERATOR ON-LINE 692$5 .4.463.5 31.135.1

15. UNIT RESERVE SHUTDOWN HOURS 0.0 O.0 O.0

16. GROSS THERMAL ENERGY' GENERATED (WWH) 2.256.302 14.290.068 92.153.508 17 GROSS ELECTRICAL ENERGY GENERATED (MsH) 711.880 4.597.010 29.783.580

18. NET ELECTRICAL ENERGY GENERATED (F#H) 680.528 4.421.206- ~28.477.602 PAGE 1 OF 2

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .- __=_______= . _ _ _ _ - , ~. - - . . . .- - - . - . - - = , . _ . _ _ _ =

OPEXaTING DATA DEPORT (CONTINUED) ~ DOCKET NO. 50 - 352 ..

___ ___ 39020928.10.- .

DATE AUGUST 3 1990 -

THIS MONTH VR-TO-DATE CUWULATIVE

19. UNIT SERVICE FACTOa 93.1 87.7 79.0 -

20. UNIT AVAILABILITV' FACTOR 93.1 87.7 79.0

21. UNIT CAPACITY FACTOR (USING MDC NET) 86.7 82.4 68.5

22. UNIT CAPACITY FACTOR (USING DER NET) 86.7 82.4 68.5

23. UNIT FORCED OUTAGE RATE- 0.0 4.8 3.2 :

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

REFUELING OUTAGES SEPTEMBER 07.1990: 75 DAVS 25 IF SHUTDOWN AT END OF REPORT PERIOD. ESTIMATED DATE OF STARTUP: .

26. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION): FORECAST ACHIEVED INITIAL CRITICALITY 12/19/84 12/22/84 INITIAL ELECTRICITV MID APRIL 85- 4/13/85 COMMERCIAL OPERATION '1ST OTR 86 2/01/06 -

PAGE 2 OF 2

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3902092810

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UNIT SHUTDOWNS (ND POWER CEDUCTIONS . DOCKET NO. 50 - 352 _ _

UNIT NAME LIMERICK UNIT 1 DATE AUGUST 3. 1990 ,

REPORT-MONTH JULV. 1990 COMPLETED.8Y PHILADELPHIA ELECTRIC COMPANY MARL MECK REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215).327-1200 EXTENSION 3320 1 I METHOD OF LICENSEE SYSTEMICOMPONENTl CAUSE AND CORRECTIVE ~

l lTVPE DURATIONjREASON SHUTTING DOwNlI EVENT CODE l CODE l ACTION TO (4) $ (5) [ PREVENT RECURRENCE NO.] DATE (1).~(HOURS)l (2) REACTOR (3) i REPORT * ~ __

l J l i i i 1 21 l 900703 S C51.5 A 2 N/A- ! ZZ { ZZZZZZ TURBINE REMAINED OFF-LINE UNTIL 1 CORRECTIVE ACTION WAS COMPLETED ON MSIV.

22 900706 5 000.0 F 4 N/A ZZ ZZZZZZ LOAD WAS REDUCED 5% TO PERFORM CONTROL ROD PATTERN ADJUSTMENT.

l I 23 l 900709 F 000.0 F 4 N/A ZZ ZZZZZZ l LOAD WAS REDUCED 2% DUE TO HIGH TURBINE l

l BACK PRESSURE.

I 5 F 4 N/A ZZ ZZZZZZ LOAD WAS REDUCED 5% TO PERFORM CONTROL

~24 8 900712 000.0 1 ROD PATTERN ADJUSTMENT.

l I l ZZ ZZZZZZ "' LOAD WAS REDUCED Z% DUE TO HIGH TURBINE-25 900715 F 000.0 F 4 ~N/A l BACK PRESSURE.'

l - ,

23 900720 5 000.0 F 4 l N/A ZZ ZZZZZZ- LOAD WAS REDUCED 5% TO PERFORM CONTROL

! ROD.. PATTERN' ADJUSTMENT.

27 900727 5 000.0 F 4 .N/A ZZ ZZZZZZ LOAD WAS REDUCED 5% TO PERFORM CONTROL ROD PATTERN ADJUSTMENT.

1 1_____ }.

l 51.5 l-(1) -(2) (3) (4)

F - FORCED REASON METHOD EXHIBIT G - INSTRUCTIONS A - EQUIPMENT FAILURE ( EXPLAIN) 1 - MANUAL FOR PREPARATION OF DATA S - SCHEDULED ENTRY SHEETS FOR LICENSEE B - MAINTENANCE.OR TEST 2 - MANUAL SCRAM.

C - REFUELING 3 - AUTOMPTIC SCRAM. ' EVENT REPORT (LER)

D - REGULATORY RESTRICTION 4 - OTHER (EXPLAIN) FILE (NUREG-0161)

E - OPERATOR TRAINING + LICENSE EXAMINATION F -JADMINISTRATIVE (5) -

G - OPERATIONAL ERPOR (EXPLAIN)

H - OTHER(EXPLAIN) EXHIBIT I'- SAME SOURCE'

[

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3902092)10 1 Docket No. #50-353 Attachment to Monthly :

Operating Report for .

July 1990 j LIMERICK GENERATING STATION ,

UNIT 2 ' .

JULY 1 THROUGH JULY 31,1990 l

I. NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES

~ Limerick Unit 2 began the month of July in OPCON 4. The unit had been shut down during the '

month of June for a routine maintenance outage, On July 10, the unit entered OPCON 2 at 0615 '3

hours and criticality was achieved at 1810 hours0.0209 days 0.503 hours 0.00299 weeks 6.88705e-4 months . 5 July 12 at 1119 hours0.013 days 0.311 hours 0.00185 weeks 4.257795e-4 months , the main turbine generator was synchronized to the grid. On July 15. ;21 hours2.430556e-4 days 0.00583 hours 3.472222e-5 weeks 7.9905e-6 months main turbine condenser vacuum began to rapidly degrade, leading to a turbine trip are actor automatic scram at 0931 hours0.0108 days 0.259 hours 0.00154 weeks 3.542455e-4 months . The 1 unit was subsequently placed in cold shutdown for Investigation and repair. On July 20, the drain line, which caused the loss of vacuum, was repaired snd other maintenance continued. On July 23, the unit entered OPCON 2 at 0338 hours0.00391 days 0.0939 hours 5.588624e-4 weeks 1.28609e-4 months and achieved criticality at 0615 hours0.00712 days 0.171 hours 0.00102 weeks 2.340075e-4 months . On July 24 at f 1725 hours0.02 days 0.479 hours 0.00285 weeks 6.563625e-4 months , the main turbine generator was synchronized to the grid. On July 27, the reactor achieved 100% of rated thermal power. On July 29 at 1247 hours0.0144 days 0.346 hours 0.00206 weeks 4.744835e-4 months , reactor power was reduced to a nominal 60% due to a control rod drift problem identified.during testing. ' Power was further reduced to 50% to establish a new control rod pattern for ascension to full power. On July 31, the reactor achieved 100% of rated thermal power.

Operational events that occurred during the month of July included:

On July 13, during preparations to work on the '2C' Reactor Enclosure Exhaust Fan, (

the air supply line to a solenoid valve (SV 076-255C) that supplies air to the exhaust fan blade positioner was sheared off. The loss of air caused the '2A' and '2B' Reactor Enclosure Exhaust Fans to cycle to minimum blade pitch,' causing a positive reactor enclosure differential pressure. The excessive positive pressure i caused the failure of a reactor enclosure blowout panel, which resulted in a loss of.

secondary containment. Maintenance repaired the blowout panet and secondary containment was restored -within the allowable. Technical Specification Action Statement timo limits.

On July 15, the Main Turbine tripped on low main condenser vacuum causing an automatic reactor shutdown. The loss of condenser vacuum was caused by a failed Main Turbine lube oil drain line which penetrates the condenser shell. The Main Condenser was blocked and the lube oil drain line was repaired.~ Supports were added on all the lube oil drain lines in the condenser to prevent future failures.

On July 29, with the reactor at 100% power, control rod 30 31 began to drift out following a single notch withdrawal signal during the control rod exercise test. The Reactor Operator was able to give the control rod an Insert signal to fully insert the l control rod. The control rod was declared inoperable and isolated for Technical Specification compliance. The control rod has remained inoperable pending further I testing and operability verification.

i

.ll. CHAlI FNGES TO MAIN STEAM SAFETY RELIEF VALVES There were no challenges to the Main Steam Safety Relief Valves during the month of July.

"bvECOGE DAILY UNIT POWER LEVEL .

DOCKET NO. 50 - 353 39020928.IO._.

UNIT LIMERICK UNIT 2 ,

DATE AUGUST 3. 1990 COMPANY PHILADELPHIA ELECTRIC COMPANY KARL MECK-REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 MONTH JULY 1990 DAY AVERAGE DAILY POWER LEVEL DAY ' AVERAGE DAILY POWER LEVEL (MWE-NET) (MWE-NET)'

1 0 17 0 2 0 18 0 3 0 19 0 4 0 20 O 5 -0 21 0 6 'O 22 0 7 0 23 0 8 0 24 41 9 0 25 442 10 0, 26 835

'11 0 27 1024 12 90 28 1047 13 342 29 824 14 819 3 0. ' 991 15 309- 31- ,1032

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-3902092816

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ooCxE,NO. So._ 353-DATE AUGUST 3. 1990 .

COMPLETED BY PHILADELPHIA ELECTRIC _COMPANV; KARL MECK REPORTS SUPERVISOR.

BUSINESS UNIT-LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320, OPERATING STATUS

1. UNIT NAME: LkhERICK UNIT 2 NOTES: THERE WAS ONE FORCED SHUTDOWN 2.' REPORTING PERIOD: JULY. 1990 AND ONE LOAD REDUCTION GREATER

3. LICENSED THERMAL POWER (MwT): 3293 THAN 20% AFTER'THE UNIT. RETURN

4. NAMEPLATE RATING (GROSS MwE): 1138 TO SERVICE.

5. DESIGN ELECTRICAL RATING (NET MwE): 1055

6. MAXIMUM DEPENDABLE-CAPACITV (GROSSMwk): 1092 _

7. MAXIMUM DEPENDAELE CAPACITV (NET MwE): 1055

l

8. IF CHANGES OCCUR IN CAPACITV RATINGS (ITEh5 NUMBER 3 THROUGH 7) SINCE.LANT REPORT. GIVE REASONS:

9. POWER LEVEL.TO whICH RESTRICTED, IF ANV (NET MwE):

10. REASONS FOR RESTRICTIONS. IF ANY:

.THIS MONTH 'YR-TO-DATE' CUMULATIVE

11. HOURS IN REPORTING PERIOD 744 4.919 4.919

12. NUMBER OF HOURS REACTOR WAS CRITICAL 321.1 ~4.120.7 4.120.7

13. REACTOR RESERVE-SHUTDOWN HOURS - 0.0 0.0 0.0 14 HOURS GENERATOR ON-LINE 244.8 3.965.4 3.965.4

= ___- ._ __

15. UNIT RESERVE SHUTDOWN HOURS _

0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED (MwH)= 664.733 12.626.901 12.626.981

17. GROSS ELECTRICAL ENERGV GENERATED (MwH)- 195.810 4.176.5}6. _

-4.176.516

18. NET ELECTRICAL ENERGY GENERATED (MwH) 183.354- 4.016.164 4.016.164 PAGE t OF 2.

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OPEZTING DATA LEPORT:(CONTINUED) DOCKET NO. 353 .

DATE AUGUST 3. 1990' .

THIS MONTH YR-TO-DATE CUMULATIVE--

19. UNIT SERVICE FACTOR. 32.9 80.6 80.6

20. UNIT AVAILABILITY FACTOR 32.9 80.6 80.6 2.. UNIT CAPACITY FACTOR (USING MDC NET) 23.4 77.4 77.4 23.4'

22. UNIT CAPACITY FACTOR (USING DER NET) -

7

'7.4' 77.4

23. UNIT FORCED OUTAGE RATE 33.4 8.7 8.7 24 SHUTDOWNS SCHED' J LED OVER NEXT 6' MON HS (TYPE. DATE. AND DURATION OF EACH):

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

26 UNITS IN TEST STATUS (PRIOR 70 COMMERCIAL OPERATION)- FORECAST ACHIEVED INITIAL CRITICALITY 08/12/89 08/12/89 INITIAL ELECTRICITV 09/01/89' 09/01/89 COMMERCIlAL OPERATION 02/01/90 01/08/90 4

PAGE 2 OF 2 M

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m UNIT SHUTDOWNS AND' POWER C. EDUCTIONS DOCKET NO. 50 - 353 -

_. ~39020928-101 UNIT NAME LIMERICK - UNIT 2 _

DATE AUGUST 3. 1990 ,_

REPORT MONTH JULY. 1990 COMPLETED BY PHILADELPHIA ELECTRIC COMPANY ._

KARL MECK REPORTS SUPERVISOR BUSINESS UNIT-LIMERICK GENERATING STATION' TELEPHONE (215) 327-1200 EXTENSION 3320 I 'l l' METHOD CF l LICENSEE SYSTEM l COMPONENT ' CAUSE AND CORRECTIVE

'l TVPEjDURATION, REASON l SHUTTING DOWNI EVENT CODE l CODE- ACTION TO NO.I DATE (1)l (HOURS) (2) l REACTOR (3) l REPORT s (4) l (5) H PREVENT RECURRENCE _-

! I I I I i 15 i 900712 1 5 1 275.3 8 4 N/A ZZ ZZZZZZ j REACTOR REMAINED SHUTDOWN TO COMPLETE A-1 l l l SHORT MAINTENANCE OUTAGE.

I i ~ .

. I 16 COO 715 l_ F 122.5 A 3 N/A ZZ ZZZZZZ. l~ TURBINE TRIPPED AND THE REACTOR AUTO-

! H I MATICALLY SCRhMMED FOLLOWING A LOSS OF l-CONDENSER VACUUM.

I I , i 17 i COO /20 S l 101.4 B 4 N/A I ZZ ZZZZZZ l REACTOR REMAINED SHUTDOwi TO COMPLETE f l 1 i MAINTENANCE.

1 I i 10 I 900729 F l 000.0 A 4 N/A' ZZ ZZZZZZ REACTOR POWER WAS REDUCEO TO 60% TO l l l { ISOLATE A . CONTROL ROD DRIFT PROBLEM.

! l l THEN TO 50%.70 ESTABLISH NEW CONTROL i j ROD PATTERN. - , _

i l ..... .l i l 499.2 l' (1) -(2) .(3) (4)

F - FORCED REASON METHOD .

, EXHIBIT G - INSTRUCTIONS S - SCHEDULED A - EQUIPMENT-FAILURE ( EXPL AIN) 1 - MANUAL FOR PREPARATION 05 DATA B - MAINTENANCE OR TEST 2 - MANUAL' SCRAM. ENTRY SHEETS FOR LICENSEE C - REFUELING 3 - AUTOMATIC SCRAM. EVENT REPORT (LER)

D - REGULATORY RESTRICTION .

4 - OTHER (EXPLAIN) FILE (NUREG-0161)

E - OPERATOR TRAINING + LICENSE EXAMINATION F - ADMINISTRATIVE (5)

G - OPERATIONAL ERROR ( EXPL AIN )

H - OTHER(EXPLAIN) EXHIBIT I - SAME SOURCE-

- _ - ~ -m-m__. L. ,

ML20058P166

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