ML20036B169

Monthly Operating Repts for Apr 1993 for Limerick Generating Station Units 1 & 2

ML20036B169
Person / Time
Site:	Limerick
Issue date:	04/30/1993
From:	Helwig D, Meck K PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9305180255
Download: ML20036B169 (12)

Text

T.S.6.9.1.6 PHILADELPHIA ELECTRIC COMPANY LIMERICK GENERATING STATION P. O. BOX 2300 SANATOGA, PA 19464-2300 (215) 327-1200, EXT. XKX)

DAVID R. HELWIG May 10, 1993 VICE PRESIDENT LIMERICK GENERATING STATION Docket Nos. 50-352 50-353 License Nos. NPF-39 NPF-85 U.

S.

Nuclear Regulatory Commission Attn:

Document Control Desk Washington, DC 20555

Subject:

Limerick Generating Station Monthly Operating Report For-Units 1 and 2 Enclosed are the monthly operating reports for Limerick Units 1 and 2 for the month of April, 1993 forwarded pursuant to Technical Specification 6.9.1.6.

Very truly yours,

=

[

IGG /dt c Enclosures cc:

T.

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

N.

S.

Perry, USNRC Senior Resident Inspector LGS (w/ enclosures) 9305180255 930430 QV i PDR ADOCK 05000352

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R.

PDR

L Docket No. #50-352 l

Attachment to Monthly

(

Operating Report for i

April 1993 i

h LIMERICK GENERATING STATION f

UNIT 1 APRIL 1 THROUGH APRIL 30, 1993 I.

NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES Limerick Unit 1 began the month of April at a nominal 100% of

~

rated thermal power (RTP).

On April 10, 1993 power was briefly reduced to 90% RTP for Main Turbine Control Valve testing.

On April 17, power was reduced to 35% RTP to change out the "1A" and "1B" Recirculation Pump Motor Generator Set l

Brushes.

The Brushes were replaced and RTP was restored to 100% the same day.

Unit 1 ended the month at a nominal 100%

of rated thermal power.

i Unit 1 occurrences during the operating period included:

On Monday, April 5, during the performance of an Instrument and Control Surveillance Test the technician inadvertently manipulated an incorrect radiation channel.

This resulted in a Group VIC isolation.

l II.

CHALLENGES TO MAIN STEAM SAFETY RELIEF VALVES t

There were no challenges to the Main Steam Safety Relief

(

Valves during the month.

i cp tgwx1 j

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t

1 AVERAGE DAILY UNIT POWER LEVEL e

DOCKET No. 50 - 352 UNIT LIMERICK UNIT 1 DATE MAY 10.1993 COMPANV PHILADELPHIA ELECTRIC COMPANY t

KARL MECK REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 MONTH APRIL 1993 DAY AVERAGE DAILY power LEVEL DAY AVERAGE DAILY POWER LEVEL t

(MWE-NET)

(MwE-NET) 1 1058 17 828

[

2 1051 18 1052 3

1055 19 1053 4

1058 20 1044 5

1056 21 1041 6

105E 2*

1074 7

1053 23 1037 E

1056 2a 1053 9

1046 25 1043 10 1032 26 1044 i

11 1053 27 1052 12 1054

28 1052 13 1053 29 1047 14 1046 30 1050 s

15 1047 s

(

16

- 1041 l-l i

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OPERATING DATA REPORT t.-

DOCKET NO. 50 - 352 DATE MAY 10.1993 COMPLETED BV PHILADELPHIA ELECTRIC COMPANV KARL MECk REPORT 5 SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 OPERATING STATUS 1 UNIT NAMEt LIMERICK

-UNIT 1 NOTES: THERE WAS ONE LOAD OROP

2. REPORTING PERIOD:

APRIL. 1993 GREATER THAN 20% TO 3.

LICENSED THERMAL POWER (MWT):

3293 REPLACE-THE A &B 4 NAMEPLATE RATING (GROSS MWE):

1138 REACTOR RECIRC. PUMP

5. DESIGN ELECTRICAL RATING (NET MWE):

1055 MOTOR GENERATOR SET l

1 E MAk! MUM DEPENDABLE CAPACITY (GROS 5 WWE): 1092 l

BRU5HE5.

l l

l 7 MAXIMUM DEPENDABLE CAPACITY (NET MWE):

105E 1

B.

IF CHANGES OCCUR IN CAPACITY RATINGS (ITEM 5 NUMBER 3 THQOUGH 7) SINCE LAST REPORT. GIVE REASON 5:

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

10. REASONS FOR RESTRICTIONS. IF ANy6 THIS MONTH VR*TO-DATE CUMULATIVE

.11 HOURS IN REPORTING PERIOD 719 2.879 63.503

12. NUMBER OF HOURS REACTOR WAS CRITICAL 719.0 2.879.0 50.428.2

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 0.0 14 HOUR 5 GENERATOR ON*LINE 719.0 2.079.0 49.437.2

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED (WWH) 2.352.996 9.443.513 151.176.978

17. GROSS ELECTRICAL ENERGY GENERATED (WWM) 775.590 3.127.800 49.103.940

'18.' NET ELECTRICAL ENERGY GENERATED (MWH) 749.795 3.018.980 47.0$9.497 PAGE 1 0F 2

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.4 OPERATING DATA' REPORT (CONTINUED)

. DOCKET NO. 50 - 352

............... _......... ~

DATE MAY 10.1993 THIS MONTH VR-TO-DATE CUMULATIVE

19. UNIT SERVICE FACTOR 100.0 100.0 77.9

20. UNIT AVAILABILITY FACTOR 100.0 100.0 77.9

21. UNIT CAPACITY FACTOR (USING MDC NET) 98.B 99.4 70.2

22. UNIT CAPACITY FACTOR (USING DER NET) 98.8 99.4 70.2

23. UNIT FORCED OUTAGE RATE 0.0 0.0 5.0 24 SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TVPE. DATE. AND DURATION OF EACH]!

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

UNITS IN TEST STATUS (PR104 TO COMMERCIAL OPERATION):

FORECAST ACHIEVED 26.

INITIAL CRITICALITV 12/19/04 12/22/04 INITIAL ELECTRIC 1TV MID APRIL 85 4/13/05 COMMERCIAL OPERAT10N 157 QTR 86 2/01/86 PAGE 2 0F 2 i

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i UNIT SHUTDOWNS AND DOWER REDUCTIONS DOCRET NO. 50 - 352, f

UNIT WAME LIMERICK UNIT 1

^

DATE MAY 10.199?

. i REPORT MONTH APRIL. 1993 COMPLETED BV PHILADELPHIA ELECTRIC COMPANV

.L KARL MECK REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 METHOD OF l LICENSEE LSYSTEM COMPONENT [ cad 5E AND CORRECTIVE TYPE DURATION REASON SHUTTING 00WNl EVENT CODE CODE i SCTION TO

- NO.

DATE (1)

(HOURS)H (2)

REACTOR (3) l REPORT a (4)

(5) l PREVENT RECURRENCE l

6 930410 5

000.0 B

4 N/A HB VALVEX REACTOR POWER WAS REDUCED TO 90% TO PERFORM MAIN TURBINE CONTROL VALVE TESTING 7

930417 F

000.0 B

4 N/A CB MOTORX REACTOR POWER WA5 REDUCED TO 35% TO REPLACE THE A & B REACTOR RECIRCULATION l PUMD MOTOR GENERATOR SET BRU5HES.

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e - MAINTENANCE OR TEST 2 - MANUA. SCRAV.

ENTRY SHEETS FOR LICENSEE C - REFUELING 3. AUTOMATIC 5CAAV.

EVENT REPORT (LEA)

D-REGULATORS RESTRICTION 4 - OTHEA (EMDLAIN)

FILE (NUAEG-0161)

E - OPERATOR TRAINING + LICENSE EXAMINATION.

F -. ADMINISTRATIVE (5)

G - OPERATIONAL ERROR (EXPLAIN)

H - OTHER(EXPLAIN)

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9 Docket No. #50-353 Attachment to Monthly Operating Report for April 1993 LIMERICK GENERATING STATION UNIT 2 APRIL 1 THROUGH APRIL 30, 1993 I.

NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES Limerick Unit 2 began this operating period at 100% of rated i

thermal power (RTP).

On April 4, power was briefly reduced to 98.5% RTP for Control Rod exercise testing.

On April 7,

a spurious signal in the Feedwater (FW). logic resulted in a FW Setpoint setdown and a 28% Reactor Recirculation pump runback.

I Power stabilized at 58% RTP.

Power was further reduced to 39.6% RTP.

The cause of this event was a downward spike to 10 inches reactor level on the "A" narrow range level subsystem for approximately 200 milliseconds.

No cause for the level signal spike could be found.

The level signal was swapped to, the "B" subsystem and power was subsequently increased.

Power was restored to 100% RTP the same day.

On April 10, power was briefly reduced to 91% RTP for Main Turbine Control Valve s

testing.

On April 12, power was briefly reduced to 95% for a control rod pattern adjustment.

On April 18, power was briefly reduced to 95% RTP for control rod exercise testing.

On April 19, the " Reactor Hi Level Turbine / RFPT (reactor feed pump turbine) Trip" and the " Reactor Hi/Lo Level" alarms were received. Reactor level had increased to 48 inches.

The "2C" Reactor Feedpump Tripped per design and the 62% flow Reactor Recirculation pump Motor-Generator Set Runback occurred.

RTP stabilized at 71% following the event.

The cause of this event was spiking in the output signal of the Feedwater (FW)

Master Level Controller.

This caused the FW Level Control System to act erroneously.

No cause for this event could be identified.

A Temporary Circuit Alteration was performed to monitor a FW Level Control System power supply.

This power supply is the only common equipment between this event and the April 7 event.

Power was increased at 1359 hours0.0157 days <br />0.378 hours <br />0.00225 weeks <br />5.170995e-4 months <br /> and at 1655 hours0.0192 days <br />0.46 hours <br />0.00274 weeks <br />6.297275e-4 months <br /> power was restored to 100% RTP.

On April 23, power was briefly reduced to 99% RTP for Main Turbine Stop Valve testing.

On April 25, power was briefly reduced to 98% RTP f or control rod exercise testing. Unit 2 ended this operating period at 100% of rated thermal power.

II.

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

oprt ex2

AVEROGE DAILv tlNIT POWER LEVEL

_.1 DOCKET NO. 50 -'353 UNIT LIMERICK UNIT 2

-DATE MAY 10.1993 COMPANY PHILADELPHIA ELECTRIC COMPANY KARL MECM REPORTS SUPERVISOR -

BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 MONTH APRIL 1993 DAY-AVERAGE DAILV POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWE-NET)

(MWE= NET) 1 1076 17 1059 2

1070 18 1062 3

1072 19 1001 4

1075 20 1059 5

1073 21 1057 E

1073 22 1085 7

806 23 1051 P

10 7 E-

'24 1069

' {

9 1060

' 25

-1059 i

10 1061 26 -

1059 t

11 1068 27 1064

.i 12 1069 28 1110 13 1068 29 1022 1A 1061 30

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OPERATIMG DATA REPORT i

DOCKET NO. 50 - 353 DATE MAY 10.1993 COMPLETED BV' PHILADELPHIA ELECTRIC COMPANY MARL MECK REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 OPERATING STATUS i

1 UNIT NAME: LIMERICK UNIT 2 NOTES: THERE WERE TWO LOAD DROPS 2.

REPORTING PERIOD:

APRIL. 1993 GREATER THAN 20% DUE TO A 3.

LICENSED THERMAL POWER (MWT):

3293 REACT, REC 1RC. PUMP RUNBACM 4 NAMEPLATE RATING (GROSS MwE):

1138 CAUSED BY A FALSE REACT. LOW 5.

DESIGN ELECTRICAL RATING (NET MWE)!

1055 LEVEL SIGNAL FROM THE Fw LOGIC l

6.

max! MUM DEPENDABLE CAPACITY (GROSS MwE): 1092 l

AND RFPT TRIP / REACT. RECIRC.

l l

7.

MAXIMUM DEPENDABLE CADACITV (NET MWE)t 1055 l

PUMP RUNBACK CAUSED BY AN OUTD l 8.

IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS NUMBER 3 THROUGH 7) SINCE LAST REPORT. G1VE REASONS 9.

PDwER LEVEL TO WHICH RESTRICTED, IF ANY (NET MwE):

10. REASONS FOR RESTRICTIONS. IF AN4:

THIS MONTH VR-TO-DATE CUMULAT1vt

11. HOURS IN REPORTING PERIOD 719 2.079 29.015 l

12. NUMBER OF HOURS REACTOR WAS CRITICAL 719.0 1.520.8 24.761.6

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 0.0 14 HOURS GENERATOR ON-LINE 719.0 1.416.9 24.073.4

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0 16.. GROSS THERMAL ENERGY GENERATED (MwH) 2.345.232 4.114.328 76.080.476

17. GROSS ELECTRICAL ENERGV GENERATED (MwH) 784.600 1.348.270 25.101.376

18. NET ELECTRICAL ENERGY GENERATED (MwH) 758.589 1.294.634 24.157.681 1

PAGE 1 0F 2 I

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ODERATING DATA REPORT (CONTINUED)

DOCRET No. 50 - 353

+ '

N.

DATE MAY 10.1993 e

TH15 MONTH VR-TO-DATE CUMULAT!vE

19. UNIT SERVICE FACTOR 100.0 49.2 83.0

20. UNIT AVAILABILITY FACTOR 100.0 49.2 83.0 21 UN11 CAPACITY FACTOR (USING MOC NET) 100.0 42.6 78.9

22. UNIT CAPACITY FACTOR (USING DER NET) 100.0 42.6 78.9 p

G.O 11.0 5.0

23. UNIT F0mp.ED OUTAGE RATE 24 SHUTDOWNS SCHEDULED OVER NEXT e MONTHS (TYPE. DATE. AND DURATION OF EACH)

25. IF 5HUTDOWN AT END OF RCPORT PERIOD. ESTIMATED DATE OF $TARTUP:

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

FORECAST ACHIEVED INITIAL CRIT.:ALITS 08/12/89 08/12/89 INITIAL ELECTRIt1Ts 09/01/19 09/01/89 COMMERCIAL OPERATION 02/01/90 01/08/90 f

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UNIT SHUTDOWNS QND power REDUCTIONS DOCKET NO. 50 - 353 UNIT NAME LIMERICK UNIT 2 DATE MAV 10.199?

REPORT MONTH APRIL. 1993 COMPLETED Bv PHILADELPHIA ELECTRIC COMPANY KARL MECk REPORTS SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 METHOD OF LICENSEE SYSTEM COMPONENT CAUSE AND CORRECTIVE TYPE DURATION REASON SHUTTING DOWN EVENT CODE CODE ACTION TO NO.

DATE (1)

(HOURS)

(2)

REACTOR (3)

REPORT a (4)

(5)

PREVENT RECURRENCE 10 930404 5

000.0 B

4 N/A RD CRDRVE REACTOR POWER WAS REDUCED TO 98.5% FOR CONTROL ROD EXERCISE TESTING.

11 930407 F

000.0 B

4 N/A CB. INSTRU THERE WAS A DOUBLE REACTOR RECIRCULATION l

PUMP RUNBACK TO 39.6% POWER DUE TO A FALSE l

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REACT 0c POWER WAS REDUCED TC 91% TO PERFODM l

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MANUAL SCRAM; ENTRY SHEETS FOR LICENSEE C - REFUELING 3 - AUTOMATIC SCRAM.

EVENT REPORT (LER)

OTHER (EXPLAIN)

FILE (NUREG-0161)

D - REGULATORY RESTRICTION 4

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

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UNIT SHUTDOWN 5 QND POWER REDUCTIONS DOCKET MO. 50 - 353 r

UNIT NAME LIMERICK UNIT 2 DATE MAY 10.1993 t

REPORT MONTH APRIL. 1993 COMPLETED BY PHILADELPHIA ELECTRIC COMPANS KARL MECK REPORT 5 SUPERVISOR BUSINESS UNIT LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 METHOD OF l LICENSEE SYSTEM COMPONENT CAUSE AND CORRECTIVE TYPE DURATION REASON SHUTTING DOWNI EVENT CODE CODE ACTION TO NO.

DATE (1)'

(HOURS)

(2)

REACTOR (3) l REPORT *

(4)

(5) l PREVENT RECURRENCE i

15 930419 F

000.0 B

4 N/A CH INSTNU A SPIKE IN THE OUTPUT SIGNAL OF THE FEEDWATER:

MASTER CONTROLLER CAUSED A "2C" RFPT TRIP AND A REACTOR RECIRC. PUMP RUNBACK. POWER STABILIZED AT 71%. NO CAUSE WAS IDENTIFIED l THE POWER SUPPLY TO THE FW LEVEL CONTROLLER l IS BEING INVESTIGATED I

1 16 i 930423 5

000.0 B

4 I

N/A HB VALVEF l REACTOR POWER WA$ REDUCED TO 99% FOR MAIN l

I l TURBINE STOP VALVE TESTING i

1 1T 930425 5 1 000.0 0

4 I

N/A RB CADRVE REACTOR POWER WAS REDUCED TO 98% FOR CONTROL ROD EXERCISE TESTING

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F - FORCED REASON METHOD EXHIBIT G-INSTRUCTIONS 5 - SCHEDULED A - EQUIPMENT FAILURE (EXPLAIN) 1. MANUAL FOR PREPARATION OF DATA B - MAINTENANCE OR TEST 2 - MANUAL SCRAM.

ENTRY SHEETS FOR LICENSEE C - RE*UELING-3 - AUTOMATIC SCRAM.

EVENT REPORT (LER)

D - REGULATORY RESTRICTION 4 - OTHER (EMPLAIN)

FILE (NUREG-0161)

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

G - OPERATIONAL' ERROR (EXPLAIN)

H - OTHER(EXPLAIN)

EXHIBIT I - SAME SOURCE

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