Text

Monthly Operating Repts for Mar 1993 for Limerick Generating Station Units 1 & 2
	ML20035E799
Person / Time
Site:	Limerick
Issue date:	03/31/1993
From:	Helwig D, Meck K; PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	; NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
	NUDOCS 9304190263
	Download: ML20035E799 (12)
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T.S.6.9.1.6 l

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i PHILADELPHIA ELECTRIC COMPANY t

i LIMERICK GENERATING STATION P. O. BOX 2300 f

SANA 10GA, PA 19464-2300 f

(215) 327-1200, EXT, 3000 l

i DAVID R. HELWIG April 13, 1993 i

VICE PRES l DENT Docket Nos. 50-352 LIMERICK GENERATING STATION 50-353 I

License Nos. NPF-39 l

NPF-85 t

U.

S. Nuclear Regulatory Commission l

Attn:

Document Control Desk Washington, DC 20555

Subject:

Limerick Generating Station Monthly Operating Report For Units 1 and 2 i

[

Enclosed are the monthly operating reports for Limerick Units l

1 and 7 for the month of March, 1993 forwarded pursuant to l

Technical Specification 6.9.1.6.

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Very truly yours, 3

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KWM/dtc l-l l

Enclosures j

cc:

T. T. Martin, Administrator, Region I, USNRC (w/ enclosures)

N.

S.' Perry, USNRC Senior Resident Inspector LGS l

(w/ enclosures) l i

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9304190263 930331 y

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Docket No. #50-352 l

Attachment to Monthly Operating Report for

(

)

March 1993 t

LIMERICK GENERATING STATION i

i UNIT 1 l

l MARCH 1 THROUGH MARCH 31, 1993 a

l I.

NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES i

Limerick Unit 1 began the month of March at a nominal 100% of 1

rated thermal power.

On Sunday, March 12, at 0540 hours0.00625 days 0.15 hours 8.928571e-4 weeks 2.0547e-4 months power was reduced to 68% of rated to perform scram time and main turbine control valve testing and a rod pattern adjustment.

At 1211 hours0.014 days 0.336 hours 0.002 weeks 4.607855e-4 months power was restored to 100% of rated.

At 1450 l

hours, power was reduced to 95% due to thermal limits concerns t

caused by erroneous TIP data obtained during LPRM j

calibrations.

At 1715 hours0.0198 days 0.476 hours 0.00284 weeks 6.525575e-4 months , power was returned to 100% of rated thermal power.

Unit 1 ended this operating period at a

100% of rated thermal power.

i Unit 1 occurrences during the operating period included:

i At 1534 hours0.0178 days 0.426 hours 0.00254 weeks 5.83687e-4 months on March 28, Unit 1 entered Tech. Spec. 3.0.3 j

i due to both trains of the Standby Gas Treatment System being l

inoperable.

The "A"

filter train was blocked to support the Unit 2

drywell purge and the "B"

filter train became inoperable when the filter outlet valve was found in mid position and tripped on thermals.

Tech. Spec.

3.0.3 was exited when the valve was reset and the "B"

filter train was l

declared operable.

f II.

CHALLENGES TO MAIN STEAM SAFETY RELIEF VALVES

)

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

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50 - 352 UNIT LIMERICK.

UNIT l

DATE APRIL 10. 1993 COMDANY PHILADELPHIA ELECTRIC COvrANY kARL MECM REPORTS SUPERVISOR BUSINESS UNIT LIMERICM GENERATING ETATION i

TELEPHONE (215) 327-1200 EXTENSION 3320 MONTH MARCH 1993 DAY AVERAGE DAILV DOWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWE-NET)

(MWE-NET)

[

I 1

1057 17 104B 2

1059 19 1059 3

1057 19 1101 1

4 1049 2(!

1018 5

1052 21 1055 f

1056 2;

100?

7 1059 23 1049 0

1050 24 105E P

1052 25 1057 to 1048 26 1054

- 1057 -

27 1039

.11 12, 978 28 1046 13 1046 29 1049 14 1060 30 1051 15 1034.

31 1046 i

.1 16 1056 i

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=

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ODERATING DATA REPORT DOCMET NO. 50 - 352 DATE APRIL 10. 1993 COMPLETED BY PHILADELPHIA ELECTRIC COMDANV kARL MECk REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 OPERATING STATUS 1 UNIT NAME: LIMERICK UNIT 1 NOTES: THERE WA5 ONE LOAD DROD

2. REPORTING PERIOD:

MARCH. 1993 GREATER THAN 20% DUE TO 3.

LICENSED' THERMAL POWER (MWT):

3293 SCRAM TIME. AND MAIN 4 NAMEPLATE RATING (GROSS MWE):

1138 TURBINE CONTROL VALVE

5. DESIGN ELECTRICAL RATING (NET MWE)t 105$

TESTING AND CONTROL ROD l

C.

MAXIMUM DEPENDABLE CAPACITV (GRO55 MWE): 1092 PATTERN ADJU$TMENT.

l

}

7.

MAXIMUM DEPENDABLE CAPACITY (NET MWE):

1055 l

B.

18 CHANGE 5 OCCUA IN CADACITY RATINGS (ITEMS NUMBER 3 THROUGH 7) SINCE LAST REPORT. G!vE REA5ON5:

9.

POWER LEVEL TO WHICH RESTDICTED. Ir ANv (NET MWE):

10. REASONS FOR RESTRICTIONS. IF ANY:

THIS MONTH VR-TO-DATE CUMULATIVE

11. HOURS IN REPORTING DERIOD 744 2.160 62.784

12. NUMBER OC HOUR 5 REACTOR WA5 CRITICAL 744.0 2.160.0 49.709.2

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0

-0.0 14 HOURS GENERATOR ON-LINE 744.0 2.160.0 48.718.2

'5.

UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED (MWH) 2.442.523 7,090.517 148,823.982

17. GROS 5 ELECTRICAL ENERGY GENERATED (MWH) 809.730.

2.352.210 48.328.350

18. NET ELECTRICAL ENERGY GENERATED (MWH) 781.536 2.269.185 46.309.702 PAGE 1 OF 2

_ _. _ _ _ _ _. _. _. _. _ -.. _. _ _ -. _ _.., _ ~.... _. _ _ _ _.. _ _. _..

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OPERATING DATA REPORT (CONTINUED)

DOCKET No. 50 - 352 DATE APRIL 10. 1993 THIS MONTH vp-TO-DATE CUMULATIVE

19. UNIT SERVICE FACT 00 100.0 100.0 77.6

20. UNIT AVAILABILITV FACTOR 100.0 100.0 77.6

21. UNIT CAPACITV FACTOR (U51NG MDC NET) 99.6 99.6 69.9

22. UNIT CAPACITY FACTOR (USING DER NET) 99.6 99.6 69.9

23. UNIT FORCED OUTAGE RATE 0.0 0.0 5.1 24 SHUTDOWN $ SCHEDULED OVER NEXT 6 MONTHS (TVPE. DATE. AND DURATION OF EACH)t 25..IF SHUTDOWN AT END OF REPORT PERIOD. ESTIMATED DATE OF STARTUP:

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

FORECAST ACHIEVED IN1T!*L CRITICALITV 12/19/"44 12/22/B4 INITIAL ELECTRIC 1TV MID APRIL 85 4/13/85 COVMERCIAL OPERATION 157 QTR 86 2/01/06 PAGE 2 0F 2-

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UNIT SHUTDOONS AND POtVER REDUCTIONS DOCKET NO. 50 - 352

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UNIT NAME LIMERICK ONIT 1 DATE APRIL 10. 1993 REPORT MONTH MARCH. 1993 COMPLETED BV PHILADELPHIA ELECTRIC COMPANY MARL MECW REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EMTENSION 3320 METHOD OF LICENSEE SYSTEM COMPONENT CAUSE AND CORRECTIVE TVPE DURATION REASON SHUTTING DOWN EVENT CODE CODE ACTION TO NO.

DATE (1)

(HOURS)

(2)

REACTOR (3)

REPORT a (4)

(5)

PREVENT RECURRENCE 4

930312 5-000.0 0

4' N/A AB CRDRVE LOAD WAS REDUCED 32% FOR CONTROL ROD SCRAM TIME TESTING. MAIN TURBINE CONTROL VALVE TESTING AND CONTROL ROD PATTERN ADJUSTMENT 5

930312 F

000.0 B

4 N/A RB INSTRO REACTOR POWER WA5 REDUCED TO 95% DUE TO THERMAL LIMITS CONCERN 5 CAUSED BY ERRONEOU5 TIP DATA OBTAINED DURING LPRM CALIBRATION 5 i

(1)

(2)

(3)

(4) z. rORCED' REASON METHOD EXWIBIT G-INSTRUCTIONS 5-SCHEDULED-A - EQUIPMENT FAILORE (EXPLAIN) 1. MANUAL FOR PREPARATION Oc OATA B - MAINTENANCE OR TEST 2 - MANUAL SCRAM.

ENTRY SHEET $ FOR LICENSEE C - REFUELING 3 - AUTOMATIC SCRAM.

EVENT REPORT (LER)

D - REGULATORY. RESTRICTION 4 - OTHER (EMPLAIN)

FILE _(NUREG-01611 E - O ERATOR TRAINING 4 LICENSE EXAMINATION F - ADMINISTRATIVE (E=

G - ODERATIONAL ERROR (EMDLAIN)

H-OTHER(EXPLAIN)

EXHIBIT I - SAME SOURCE f

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l Docket No. #50-353 Attachment to Monthly Operating Report for March 1993 Page 1 of 2 LIMERICK GENERATING STATION l

UNIT 2 MARCH 1 THROUGH MARCH 31, 1993 I.

NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES 3

Limerick Unit 2 began the month of March in Refuel, OPCON 5, j

with reassembly in progress during the unit's second refueling i

outage.

On March 3 at 1130 hours0.0131 days 0.314 hours 0.00187 weeks 4.29965e-4 months , Unit 2 entered OPCON 4 with the RPV head fully tensioned.

On March 13 at 1652 hours0.0191 days 0.459 hours 0.00273 weeks 6.28586e-4 months , the MODE switch was placed in start-up and Unit 2 entered OPCON 2.

By 2245 hours0.026 days 0.624 hours 0.00371 weeks 8.542225e-4 months , the reactor was critical.

On March 16 at 1410 hours0.0163 days 0.392 hours 0.00233 weeks 5.36505e-4 months OPCON 1 was entered and at 2026 hours0.0234 days 0.563 hours 0.00335 weeks 7.70893e-4 months the generator was

'1 synchronized for the warming period prior to the overspeed test.

At 2346 hours0.0272 days 0.652 hours 0.00388 weeks 8.92653e-4 months the generator was resynchronized following overspeed trip testing.

At 0039 hours4.513889e-4 days 0.0108 hours 6.448413e-5 weeks 1.48395e-5 months on March 17, the main turbine tripped due to a stator water cooling runback caused by a low flow to the generator bushings.

The generator was synchronized at 0559 hours0.00647 days 0.155 hours 9.242725e-4 weeks 2.126995e-4 months on the same day.

Unit 2 achieved 100% of rated thermal power on March 19.

On March 20, power was reduced to 90%

for a rod pattern adjustment.

On March 21, power was reduced to 97% for a rod l

pattern adjustment.

On March 26 at 1343 hours0.0155 days 0.373 hours 0.00222 weeks 5.110115e-4 months , the Unit 2 reactor scrammed during turbine valve testing.

On March 27 at 1250 hours0.0145 days 0.347 hours 0.00207 weeks 4.75625e-4 months , OPCON 2 was entered and by 2118 hours0.0245 days 0.588 hours 0.0035 weeks 8.05899e-4 months the reactor was critical.

On March i

28 at 0731 hours0.00846 days 0.203 hours 0.00121 weeks 2.781455e-4 months the main turbine generator was synchronized to the grid and Unit 2 was returned to 100% of rated thermal power on March 29.

On March 30, power was reduced to 90% for a rod pattern adjustment.

Unit 2 ended the operating period at 100% of rated thermal power.

l i

Docket No. #50-353 Attachment to Monthly l

Operating Report for March 1993 Page 2 of 2 Unit 2 occurrences during the operating period included:

On March 3 an inadvertent start of D22 Diesel Generator occurred during performance of the D22 Loss of Power Logic System Functional Test.

The cause of this event was misunderstood verbal communications, in that during the test, a member of the test team reported that the engine had been shutdown for 150 seconds and the engine could be reset.

At 2000 hours0.0231 days 0.556 hours 0.00331 weeks 7.61e-4 months , the test director believed that 101/D22 breaker had been tripped af ter seeing the operator manipulate 101/D22 I

breaker.

Hearing that the engine could be reset, he gave direction to the test team member in the D22 Bay to reset the engine using the ENGINE SHUTDOWN / RESET push button.

This action skipped the step to place the 101/D22 breaker to Trip, which would have removed the LOOP signal from the D22 bus.

As a consequence, the D22 Diesel Generator started.

At 1342 hours0.0155 days 0.373 hours 0.00222 weeks 5.10631e-4 months on March 26, 1993 the Unit 2 Main Turbine tripped during performance of the Main Turbine Stop and Combined Intermediate Valve (CIV) Exercise Test.

The turbine trip resulted in a reactor scram.

TRIP procedures and normal shutdown procedures were executed.

The cause of the turbine trip was due to air en?rapment in the Electro Hydraulic Control (EHC) system at a CIV.

The presence of air in the EHC system led to a perturbation of the Emergency Trip System fluid, which resulted in the Turbine Stop Valves closing.

At 1534 on March 28, Unit 2 entered Tech. Spec. 3.0.3 due to both trains of the Standby Gas Treatment System being INOPERABLE.

The "A"

filter train was blocked to support the Unit 2

drywell purge and the "B"

filter train became inoperable when the filter outlet valve was found in mid position and tripped on thermals.

Tech. Spec.

3.0.3 was exited when the valve was reset and the "B"

filter train was declared operable.

II.

CHALLENGES TO MAIN STEAM SAFETY RELIEF VALVES There were no challenges to the Main Steam Safety Relief Valves during the month.

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GVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50 - 353 UNIT LIMERICv UNIT 2 DATE annIL 10, 1993 COMPANY PHILADELPHIA ELECTRIC COMDANY MARL MECK REDORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 i

MONTH MARCH 1993 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWE-NET)

(MWE* NET) 1 0

17 106 2

0 te

$$9 3

0 19 1006 4

0 20 1062 5

0 21 1073 0

0 22 1077 i

-7 0

23 1067 e

C 24 -

1074 9

.0 25 1073 10 0

26 610 11 0

27 0

12 0

28 354 13 0

29 1043 14 0

30 1030 4

15

'O 31 1064 16 4

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OPERATING DATA REPORT DOCKET NO. 50 - 353 DATE APRIL 10, 1993 COMPLETED BV DHILADELPHIA ELECTRIC COMPANY MARL MECH REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 OPERATING STATUS 1.

UNIT NAME: LIMERICK UNIT 2 NOTES: THE UNIT WA5 IN A REFUEL

2. REPORTING PERIOD:

MARCH. 1993 OUTAGE UNTIL MARCH 16TH.

~3.

LICENSED THERMAL >0WER(MWT):

3293 THE TURDINE CAME OFF*LINE 4 NAMEPLATE RATING (GROSS MWEJ:

113B 3 TIMES DURING THE MONTH 5.

DESIGN ELECTRICAL RATING (NET MWE) 1055 TURBINE TRIP TESTING. STATOR Ei MAXIMUM DEPENDABLE CAPACITV (GROSS MWE): 1092 WATER COOLING 10W FLOW. AND 7 MAXIMUM DEPENDABLE CAPACITY -(NET MWE):

1055 i

AIR ENTRAINED IN EHC SYSTEM.

l B.

IF CHANGES OCCUR IN CAPACITY RATINGS IITEM5 NUMBEA 3 THDOUGH 7) SINCE LAST REPORT. GIVE REASONS:

9.

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

10. REASONS FOR RESTRICTIONS. IF ANY:

4 THIS MONTH YR-TO-DATE-CUMULATIVE 1

11 HOURS IN REPORTING PERIOD 744 2.160 28.296

12. NUMBER OF HOURS REACTOR WAS CRITICAL 401 7 801.8 24.042.0

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 0.0 14 HOURS GENERATOR ON-LINE 315.9 697.9 23.354.4 3

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED (MWH) 952.102 1.769.096 734735.246 4

17. GROS $ ELECTRICAL ENERGY GENERATED (MWH) 303.570 563.670 24.316,776 3

18. NET ELECTRICAL ENERGY GENERATED (MWH) 290.359 536.045 23.399.092 1

PAGE 1 0F 2 1

1 i

4 s

i

OPERATING DATA REPORT (CONTINUED)

DOCMET NO 50 - 353

~

DATE APRIL 10. 1993 THIS MONTH VP-TO-DATE CUMULATIVE 19i UNIT SERVICE FACTOR 42.5 32.3 82.5

20. UNIT AVAILABILITY FACTOR 42.5 32.3 82.5

21. UNIT CAPACITY FACTOR-(USING MOC NET) 37.0 23.5 78.4

22. UNIT CAPACITY FACTOR (U5ING DER NET) 37.0 23.5 78.4

23. UNIT FORCED OUTAGE RATE 13.0.

20.0 5.2 2A. SHUTDOWN 5'5CHEDULED OVER NEAT 6 MONTHS (TYPE. DATE. AND DURATION OF EACH):

25. 1F 5HUTDOWN AT END OF REPORT PERIOD. ESTIMATED DATE OF STARTUP:

26. UNITS IN TEST'5TATUS (PRIOR TO COMMERCIAL OPERATION):

F0DECAST ACHIEVED INITIAL CPITICALITY 08/12/89 08/12/89 tNITIAL ELECTRICITY 09/Ot/89 09/01/69 COYMERCIAL OPERATION 02/01/90 01/08/9C 1

AGE 2 0F 2 I

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UNIT SHUTDOWN 5 AND POWER REDUCTIONS DOCKET NO. 50 - 353 UNIT NAME LIMERICK UNIT 2

[

DATE APRIL 10, 1993 REPORT MONTH MARCH, 1993 COMPLETED BY PHILADELPHIA ELECTRIC COMPANY KARL MECk REPORTS SUPERVISOR BUSINESS UNIT LIMER.CM GENERATING STtTION TELEPHONE (215) 327-1200 EXTENSION 3320 I

I METHOD O' LICEN5EE ' SYSTEM' COMPONENT CAUSE AND CORRECTI'vE TYPElDURATIONl REASON SHUTTING D0mN EVENT s CODE CODE ACTION TO NO.

DATE (1)l (HOURS)l (2)

REACTOR (J)

REPORT a l (4)

PREVENT RECURRENCE 6......__._.................__................(5) 3 930301 5

380.4 C

4 N/A ZZ ZZZZZZ THE UNIT REMAINED IN THE SECOND REFUELING OUTAGE 4

930316 5

000.6 B

4 N/A HA TURBIN THE MAIN TURDINE TRIP TEST WAS PERFORMED AND THE GENERATOR SVCHRONIZED TO THE GRID S

93031T F

005.3 A

4 N/A l WG HTEXCH THE MAIN TURBINE TRIPPED OFF-LINE DU5 TO LOW FLOW IN THE STATOR WATER COOLING SYSTEM T

930320.

5 000.0 B

4 N/A RB l CONROD REACTOR POWEP WA5 REDUCED TO 90% TO PERFORM i

l l

i REACTOR CONTROL RCD PATTERN ADJUSTMENTS I

i 1

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e i 93U321 i 5 4 000.0 1

B I

c N/A i

'RB l CONROD i REACTO4 POWER WAS REDUCED TO 97% TO PERFORM l

1.

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i REACTOR CONTROL ROD PATTERN ADJUSTMENTS l

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A 3

2-93-005 l

Ha l TURBIN THE UNIT AUTOMATICALLY SHUTDOWN DUE TO AIR l

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ENTRAINED IN THE MAIN TURBINE ELECTRO l

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l HVDRAULIC CONTROL SYSTEV i

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930330 E

000.0 i

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N/A l RB CONROD REACTOR POWER WAS REDUCED TO 90% TO PERFORM i

I REACTOR CONTROL ROD DATTERN ADJUSTMENTS l

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1 428.1 I

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(1)

(2)

(3)

(4)

F - FORCED REASON METHOD EXHle!T G - INSTRUCTIONS 5 - SCHEDULED A - EQUIPMENT FAILURE (EXPLAIN) 1 - MANUAL FOR PREEARATION OF 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) a E - OPERATOR TRAINING + LICENSE EXAMINATION F - ADMINISTRATIVE (5)

'G - OPERATIONAL ERROR (EXPLAIN)

H-OTHER(EXPLAIN)

Exw1 BIT I - SAME SOURCE

_ -.

ML20035E799

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