Text

Monthly Operating Repts for Sept 1990 for Limerick Generating Station Units 1 & 2
	ML20064B318
Person / Time
Site:	Limerick
Issue date:	09/30/1990
From:	Leitch G, Meck K; PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	; NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
	NUDOCS 9010160108
	Download: ML20064B318 (11)
	v • d • e

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3906037860 T.S.6.9.1.6 l

PHILADELPHIA ELECTRIC COMPANY l

L,lMERICK GENER ATING ST ATION P. O. DOX A S AN ATOG A, PENNSYLV ANI A 19444 l

(216) 3271200, EXT. 3000 Oft AH AM M. LEITCH October 5, 1990 vi..........,

6.......................

50-353 License Nos. NPF-39 NPF-85 j

r U. S. Nuclear Regulatory Commission Attnt Document Control Desk Washington, DC 20555 i

'I

Subject:

Limerick Generating Station Monthly Operating Report For i

Units 1 and 2 i

Enclosed are the monthly operating reports for Limerick Units 1 and 2 for the month of September, 1990 forwarded pursuant to Technical Specification 6.9.1.6.

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i cci T. T. Martin, Administrator, Region I, USNRC T. J. Kenny, USNRC Senior Resident Inspector I

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9010160108 yovywe PDR ADOCK 05000332 i

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39060378601, l

Dookst No. #60 362

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Attachment to MontNy Operating Report for l

September 1990

[

UMERICK OENERATING STATION -

l UNn i J

l SEPTEMBER 1 THROUGH SEPTEMBER 30,1990 l

1. NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES l

Limerick Unt 1 began the month of September at a nominal 100% of rated thermal power, l

On September 7, at approximately 1830 hours0.0212 days 0.508 hours 0.00303 weeks 6.96315e-4 months , a reactor power decrease was begun. The reactor was manually scrammed at 2221 hours0.0257 days 0.617 hours 0.00367 weeks 8.450905e-4 months , from approximately 32% power, to the third refueling outage Operational Condition (OPCON) 4 was entered on September 8 and 6was entered on SepteW2er 13. ON September 24, OPCON 5* was entered and the first fuel bundle was offloaded from the core. Limerick Unit 1 ended the month of September in OPCON 6* with approximately one-quarter of the core off-loaded, in day 23 of a scheduled 75 day refueling outage, j

Note: OPCON 5* equates to fuel movement.

t Operational events that occurred during the month of September included:

-)

On September 16, D13 Diesel Generator (D/G) was run for its LOCA4.OOP test. As part

.i of the LOOP testing, the diesel was started on a bus under voltage signal. It automatloally closed onto the bus and loaded, however, a bus voltage of greater than 5.7 kV was noted.

Following voltage verification, the diesel was secured. The D13 sieguard bus and associated loads were declared inoperable. D13 safeguard bus and assochied loads were -

_l declared operable following various testing and receipt of an engineering evaluation on -

September 18. Following 013 D/G voltage regulator troubleshooting, repair of a suspect l

rectifier selector switch, and replacement of a shutdown relay, a test run was successfully performod on September 19. The LOCA/ LOOP test was next performed, resulting in a bus t

over voltage condition similar to the 9/15 event. The diesel was run several times during the following week for System Engineer and vendor troubleshooting of the voltage regulator, The D13 D/G was run satisfactorNy on September 28. The diesel was then started on -

t September 29 for performance of the LOCA-LOOP test. With the #1 rectifer bar* selected,

-l a bus over voltage condition occurred and the diesel was shutdown. The diesel was restarted using the #2 rectifier bank and the LOCA-LOOP testing was completed i

antisfactorly, The D13 D/G was declared operable on September 30.

II. CHAT i FNGES TO THE MA!N STEAM SAFETY RELIEF VALVES l

There were no challenges to the Main Steam Safety Relief Valves during the month of September.

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THAN 20% CRIOR TO WANUA.,

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g 4 NAMEPLATE RATING (GROSS wwE):

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OUTAGE.

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5. DESIGN ELECTRICAL RATING (NET wwE):

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6. wax!wUw DEPENDABLE CADACITY (GROSS wwE): 1092 i

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1055 i

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IF CHANGES OCCUR IN CAPACITV RATINGS (ITEMS NUwSER 3 THOOUGH 7) SINCE LAST REPORT. GIVE REASONS:

9. DOWER LEVEL TO wHICH RESTRICTED. Is Aw fNET wwEl.

10. REASONS FOR RESTRICTIONS. IF ANv:

THIS woNTH VR-TO-DATE CUsutATIVE 11 HO'JRS IN REPORTING PERIOD 720 6.551 40.871

12. NUABER Or HOURS REACTOR WAS CRITICAL 166.3.

5.510.2 32.639.0

13. REACTOR RESEpvE SHUTDOWN HOURS 0.0 0.0 0.0 14 '40URS GENERATOR 04-LINE 166.3 5.373.6 32.045.4

15. UNIT RESERVE SHUTDOWN HOURS 0.0

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16. GROSS THERMAL ENERGv GENERATED (www) 540.343 77.270.679 95.134.113

17. GDOSS ELECTRICAL ENERGY GENERATED (www) 173.910 5.555.990 30.742.560

18. NET ELECTRICAL ENERGv GENERATED (www) 164.701 5.339.695 2?.396.091 DAGE 1~O*-2 ac,

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OPER3 TING DATA REPORT (CONTINUE 3)

. DOCKET N0.7

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.L.L DATE OCTOBER 1.1990

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THIS MONTM VR-TO-DATE CUWULATIVE 23.1-87.0

- 78.4

19. UMIT SERV!CE FACTOR'

20. UNIT AVAILASILITY FACTOR 23.*

82.0 78.4 21 UNIT' CAPACITY F ACT OR (USING MDC NET) 21.7.

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22. UNIT CAPACITY FACTOR (USING DER NET) 21.7 77.3 68.2-O.0 3.6 3.0

23. UNIT FORCED OUTAGE RATE 2A. SHUTDOwwS' SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE. AND DURATION OF EACH)-

REFUELING OUTAGE: SEPTEmeEn 07.1990: 75 Days

25. IF SHUTD0mN AT END OF REPORT PERIOD. ESTIMATED DATE 08 STARTUP:

26. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION):

FORECAST ACHIEVED.

INITIAL CRITICALITV 12/19/8A 12/22/8A INITIAL ELECTRICITY WID APRIL 95 4/13/95 1ST OTR 96 2'01/90' COMMERCIAL OPERATrow PAGE'2.0F'.2-s=

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.USINESS.I1 LINERICM GENERATING STATION TELEPHONE (215)-327-1200 EXTENSION 3320 I

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lTYPElDURATIONIREASONISHUTTING DOWNl EVENT l CODE l CODE l ACTION TO NO.I DATE 1 (1)! (HOURS)l -(2) i REACTOR (3) l REPORT a I (4) I (5) ! PREVENT RECURRENCE

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EVENT REPORT-(LER)

D - REGULATORV RESTRICTION 4 - OTHER (EMPLAIN)

FILE (NUREG-0161)

E - OPERATOR TRAINING

LICENSE ENAMINATION F - ADMINISTRATIVE (5)

G - OPERATIONAL ERROR (EXPLAIN)

H - OTHER(EMPLAIN)

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3906037860 1; r

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' Dookst No. #50 353

[

Attachment to Monthly i

Operating Report for.

l September 1990 l

r UMERICK GENERATING STATION UNIT 2 i

SEPTEMBER 1 THROUGH SEPTEMBER 30,1990 j

J.,

i

1. NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES Limerick Unit 2 began the month of September at a nominal 98% of rated thermal power. On j

September 1, reactor power was reduced to 00% to repair an Electrohydraulic Control (EHC) system i

leak on #4 Main Turbine Control Valve. Retum to power was begun on September 2 and reactor -

power achieved 100% on Septomber 5 following completion of LPRM onlibrations. On ember 8, reactor power was briefly reduced to 90% to perform Main Turbine Control Valve test

. On September 10, at 0911 hours0.0105 days 0.253 hours 0.00151 weeks 3.466355e-4 months , the reactor automatically scrammed due to a Nuolear Steam upply Shutoff System (NSSSS) Group l isolation signal created during survet:ance testing.. On September 13, at 1815 hours0.021 days 0.504 hours 0.003 weeks 6.906075e-4 months , the reactor achieved criticailty, and the main turbine generator was synchronized.-

j to the grid at 2112 hours0.0244 days 0.587 hours 0.00349 weeks 8.03616e-4 months on September 14. Power ascension was continued and the reactor reached 100% power on September 16. On September 17, reactor power was briefly reduced to 90% to perform a Control Rod Pattom adjustment. On September 20, reactor power was briefly reduced to 95% to perform a Control Rod Pattom adjustment. Umerick Unit 2 ended the month of September at a nominal 100% of rated thermal power, Operational events that occurred during the month of September included:

i On September 10, a full NSSSS Group 1 MSIV isolation occurred due to an instrument failure. This occurred when a plant operator was reading the Turbine Enclosure Steam Tunnel Temperature D!V 4 switches in the Auxiliary Equipment Room, concurrent with l&C

?

testing of the NSSSS Main Steam line DIV 1 temperature instrumentation. Following the MSIV isolation, the reactor scrammed with the reactor vessel leve' 'xreasing to 48' and.

pressure rising to 1112 psig. HPCI and RCIC both started, but due to the short duration of I

the initiation signal, only RCIC injected to the reactor vessel. HPCI was run in the full flow test mode. The 'N' SRV opened initially on the pressure spike and the K, M, H, S and E SRV's were cycled to contral reactor pressure. The plant entered OPCON 4 at 2209 hours0.0256 days 0.614 hours 0.00365 weeks 8.405245e-4 months .

On September 11, l&C replaced the faulty temperature switch (TTS-025-216D) and satisfactorily performed a cal / functional test.

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11. CHAli FNGES TO MAIN S1EAM SAFETY RELIEF VALVES l

There was one challenge to the Main Steam Safety Relief valves during the month of September, i

The 'N' SRV opened when reactor pressure rose to 1112 psig following a scram due to an inadvertent NSSSS Group 1 MSIV isolation. This pressure is within the allowable setpoint range per I

Technical Specifications. See Operational Events section above for details.

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DOCMET NO. 50 - 353 DATE OCTOBER 1.1990 COMPLETED BV PHILADELPHIA ELECTRIC COMPANY MARL WECK REPORTS SUPERVISOR BUSINESS UNIT LIwERICE GENERATING STATION TELEPHONE (215) 32T-1200 EXTENSION 3320 OPERATING STATUS 1 UNIT NAME: LIMERICK UNIT 2 l NOTES: THERE WAS ONE LOAD REDUCTION I

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GREATER THAN 20% PRIOR TO AN l

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AUTO SCRAW FROM 100%.

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5. DESIGN ELECTRICAL RATING (NET wwE):

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6. MAXIMUM DEPENDABLE CAPACITY (GROSS MwE): 1097 1

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7 MAXIMUU DEPENDABLE CAPACITY (NET WWE):

1055 I

8.

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

9.

DOwE# LEVEL TO WHICH RESTRICTED. IF ANV (NET WWE):

10. REASONS FOR RESTRICTIONS. IF ANr.

THIS MONTH VR-TO-DATE' CumutATIVE 11 HOURS IN REPORTING PERIOD T2O 6.383 6.363.

12. NUMBER OF M9URS REACTOR WAS CRIT 1 CAL 638.9-5.350.3' 5.350.3

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 0.0 14 HOURS GENERATOR ON-LINE 612.0 5.061.7 5.061.7 -

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0

16. GROSS THERNAL ENERGV GENERATED /* W )

1.917.766 16.053.183 16.053.183 17 GROSS ELECTRICAL ENERGV GENERATED (NwH) 633.900 5.291.016

'5.291.016

18. NET ELECTRICAL ENERGv GENERATED (#wH) 600.471 5.095.255 5.085.255 PAGE-1 OF 2 e

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OPEOGTING DATd f.EPORT (CONTINt*ED)

DOCRE T NO., 50 - - JM 3906037860' DATE OCTOBER 1.1990 THIS WONTH VR-TO-DATE CU#ULATIVE 85.0 79.3 79.3

19. UNIT SERVICE FACTOR

20. UNIT AVAILABILITV FACTOR 85.0 79.3 79.3

21. UNIT CAPACITY FACTOR (USING MDC NET) 80.1 75.5 75.5 80.1

's. 5 75.5

22. UNIT CAPACITv FACTOR (USING DER NET)

23. UNIT FORCED OUTAGE RATE 15.0 12.8 12.8 24 SHUTDOWNS SCHEDULED OVER NEXT 6 wueYHS (TvPE. DATE. AND DURATION 08 EACH):

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

26. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION):

FORECAST ACHIEVED INITIAL CRITICALITV 08/12/89 08/12/89 INITIAL ELECTRICITv 09/01/89 09/01/89 COwwEDClat OPERATION 02/01/90 07/09/90 PAGE 2 05 2 m-

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UNIT SHUTDOWN 3 END POWE3 REDUCTIONS DOCKET NO. 50 - 353 UNIT NAME LINERICt UNIT Z DATE OCTO9E3 1.1990

__ _= ----= _ _

REPORT MONTH SEPTEMBER. 1990 CO*PLETED By PHILADELPHIA ELECTRIC COMPANY

-- _ - ~ = -

MARL MECK 3906037860 REPORTS SUPERv!SoR SUSINESS UNIT LINERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 i

i WETHOD OF I LICENSEE ISYSTEMICO*PONENTI CAUSE AND CORRECTIVE l

1 I

lTVPE' DURATIONlREASONISHUTTING DOWN1 EVENT l CODE I CODE I ACTION TO

'NO.)

DATE I (1).

(HOURS)l (2) l REACTOR (3) l REPORT s !

(4) 1 (5) l PREVENT RECURRENCE i

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C00.0 1

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ML20064B318

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