ML20133G577

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Monthly Operating Repts for Dec 1996 for Limerick Generating Station Units 1 & 2
ML20133G577
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 12/31/1996
From: Baxley R, Sproat E
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9701160089
Download: ML20133G577 (11)
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Text

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4 Limerick Gsnerating Station j

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V i PECO NUCLEAR ;gy;pa c I A UNtr or PECO ENacv S "'9**PA N464~0920 i

! 1

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l T.S.6.9.1.6 1

j January 10,1997

! Docket Nos. 50-352 j 50-353

! License Nos. NPF-39

NPF-85 i

l U. S. Nuclear Regulatory Commission

Attn
Document Control Desk

, Washington, DC 20555 l

Subject:

Limerick Generating Station i Monthly Operating Report For Units 1 and 2 Enclosed are the monthly operating reports for Limerick Units 1 and 2 for the month of December 1996 forwarded pursuant to Technical Specification 6.9.1.6.

I Very truly yours, k [

Edward F. Sproat, III Director - Site Engineering drh Enclosures cc: H. J. Miller. Administrator, Region I, USNRC ,

g 'l/

N. S. Perry, USNRC Senior Resident Inspector LGS W. G. MacFarland, Vice President, LGS /

160029  :

\

\

9701160099 961231

  • PDR ADOCK 05000352 R PDR-

Dock;t No. 50-352 Attichmsnt to Monthly

. Operating Report for December 1996 Limerick Generating Station Unit 1 l December 1 through December 31,1996

l. Narrative Summary of Operatino Emeriences

)

Unit 1 began the month of December 1996 at a nominal 100% of rated thermal power (RTP).

On December 8,1996 at 0040 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />, power was reduced to 98% of RTP for main turbine valve testing. Power was restored to 100% RTP at 0149 hours0.00172 days <br />0.0414 hours <br />2.463624e-4 weeks <br />5.66945e-5 months <br />.

On December 14,1996 at 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />, power was reduced to 90% RTP for rod pattern i j adjustment and main turbine valve testing. Power was restored to 100% RTP at

0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />. l 1

On December 21,1996 at 0206 hours0.00238 days <br />0.0572 hours <br />3.406085e-4 weeks <br />7.8383e-5 months <br />, power was reduced to 97.5% of RTP for main turbine valve testing. Power was restored to 100% RTP at 0324 hours0.00375 days <br />0.09 hours <br />5.357143e-4 weeks <br />1.23282e-4 months <br />. i

! On December 23,1996 at 1120 hours0.013 days <br />0.311 hours <br />0.00185 weeks <br />4.2616e-4 months <br />, power was reduced to 25% RTP due to a failed 1 i main generator stator cooling water temperature control valve. Power was restored to 1

100% RTP on at 1945 hours0.0225 days <br />0.54 hours <br />0.00322 weeks <br />7.400725e-4 months <br />.

On December 24 at 0034 hours3.935185e-4 days <br />0.00944 hours <br />5.621693e-5 weeks <br />1.2937e-5 months <br />, power was reduced to 97% RTP for control rod pattern adjustment. Power was restored to 100% RTP at 0053 hours6.134259e-4 days <br />0.0147 hours <br />8.763227e-5 weeks <br />2.01665e-5 months <br />.

2 On December 24,1996 at 2354 hours0.0272 days <br />0.654 hours <br />0.00389 weeks <br />8.95697e-4 months <br />, power was reduced to 95% RTP for control rod pattern adjustment. Power was restored to 100% RTP on December 25,1996 at 0037 l hours.

i j Unit i ended this month operating at 100% RTP.

II. Challenoes to Main Steam Safety Relief Valves There were no challenges to the Main Steam Safety Relief Valves during the month of December.

AVERAGE DAILY POWER LEVEL DOCKET NO. 50-352 UNIT LIMERICK UNIT 1 -

DATE JANUARY 7,1997 COMPANY PECO ENERGY COMPANY ROBERT A. BAXLEY -

REPORTS ENGINEER SITE ENGINEERING LIMERICK GENERATING STATION TELEPHONE (610)718-3767 MONTH DECEMBER,1996 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DA'LY POWER LEVEL (MWE-NET) (MWE-NET) 1 1103 17 1102 2 1119 18 1109 3 1119 19 1115 4 1119 20 1116 5 1123 21 1116 6 1135 22 1117 7 1088 23 889 8 1118 24 1101 9 1115 25 1111 10 1111 26 1116 11 1115 27 1118 12 1103 28 1119 13 1110 29 1106 14 1099 30 1123 15 1110 31 1123 16 1106

OPERATING DATA REPORT DOCKET NO. 50 - 352 -

DATE JANUARY 7,1997 COMPLETED BY PECO ENERGY COMPANY ,

ROBERT A. BAXLEY REPORTS ENG!NEER SITE ENGINEERING LIMERICK GENERATING STATION .

TELEPHONE (610)718-3767 OPERATING STATUS

1. UNIT NAME: ------------------------- ---------------------- LIMERICK UNIT 1 NOTES. THERE WAS ONE LOAD DROP
2. REPORTING PERIOD _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ DECEMBE_R 1_996 t

GREATER THAN 20% THIS MONTH

3. LICENSED THERMAL POWER (MWT):________________________________3458 DUE TO FAILED TEMPERATURE
4. NAMEPLATE RATING (GROSS MWE): ______________________________11_60_

CONTROL VALVE ON THE STATOR

5. DESIGN ELECTRICAL RATING (NET MWE): __________________________11_05 WATER COOLING SYSTEM.
6. MAXIMUM DEPENDABLE CAPACITY (GROSS MWE): _____________________1145
7. MAXIMUM DEPENDABLE CAPACITY (NET MWE): _______________________1_1_05_
8. IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS 3 THROUGH 7 ) SINCE LAST REPORT, GIVE REASONS:
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 8,784 95,688
12. NUMBER OF HOURS REACTOR WAS CRITICAL 744.0 7,903.7 80,127.4
13. REACTOR RESERVE SHUTDOWN HOURS 0.0 00 0.0
14. HOURS GENERATOR ON-LINE 744.0 7,760.1 78,760.0
15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0
16. GROSS THERMAL ENERGY GENERATED (MWH) 2,555,047 25,613,268 245,754,163
17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 853,100 8,437,300 80,071,780
18. NET ELECTRICAL ENERGY GENERATED (MWH) 822,583 8,141,625 76,933,097 PAGE 1 OF 2

OPERATING DATA REPORT (CONTINUED)

DOCKET NO. 50 - 352 DATE JANUARY 7,1997 THIS MONTH YR-TO-DATE CUMULATIVE

19. UNIT SERVICE FACTOR 100.0 % 88.3 % 82.3 %
20. UNIT AVAILABILITY FACTOR 100.0 % 88.3 % 82.3 %
21. UNIT CAPACITY FACTOR (USING MDC NET) 100.1 % 84 2 % 75.9 %
22. UNIT CAPACITY FACTOR (USING DER NET) 100.1 % 84.2 % 75.9 %
23. UNIT FORCED OUTAGE RATE .0 % 3.3 % 42%
24. SHUTDOWNS SCHEDULED OVER THE NEXT 6 MONTHS (TYPE, DATE AND DURATION OF EACH):
25. IF SHUTDOWN AT THE END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP;
26. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATIONS): FORECAST ACHIEVED INITIAL CRITICALITY 12/19/84 12/22/84 INITIAL ELECTRICITY MID APRIL 85 04/13/85 COMMERCIAL OPERATION 1ST QTR 86 02/01/86 PAGE 2 OF 2

UNIT SHUTDOWNS AND POWER REDUCTIONS '

DOCKET NO. 50-352 UNIT NAME LIMERICK UNIT 1 .

DATE JANUARY 7,1997 COMPLETED BY PECO ENERGY COMPANY ROBERT A. BAXLEY REPORTS ENGINEER S!TE ENGINEERING LIMERICK GENERATING STATION ,

REPORT MONTH DECEMBER,1996 TELEPHONE (610) 718-3767 METHOD OF LICENSEE SYSTEM COMPONENT CAUSE AND CORRECTIVE TYPE DURATION REASON SHUTTING DOWN EVENT CODE CODE ACTION TO MO. DATE (1) (HOURS) (2) REACTOR (3) REPORT # (4) (5) PREVENT RECURRENCE 166 961208 S B 4 N/A HA VALVEX REACTOR POWER WAS REDUCED TO 98% DUE TO MAIN TURBINE VALVE TESTING.

167 961214 S B 4 N/A RB CONROD REACTCP POWER WAS REDUCED TO 90% DUE TO CONTROL POD PATTERN ADJUSTMENT AND MAIN TURBINE VALVE TESTING.

168 961221 S B 4 N/A HA VALVEX REACTOR POWER WAS REDUCED TO 97.5% DUE TO MAIN TURBINE VALVE TESTING.

169 961223 F A 4 N/A HA VALVEX REACTOR POWER WAS REDUCED TO 25% DUE TO A FAILED TEMPERATURE CONTROL VALVE ON THE STATOR WATER COOLING SYSTEM.

170 961224 F B 4 N/A RB CONROD REACTOR POWER WAS REDUCED TO 97% DUE TO MINOR CONTROL ROD PATTERN ADJUSTMENT.

171 961224 S B 4 N/A RB CONROD REACTOR POWER WAS REDUCED TO SS% DUE TO CONTROL ROD PATTERN ADJilSTMENT.

TOTAL HOURS (1) (2) (3) (4)

F-FORCED REASON METHOD EXH: BIT G -INSTRUCTIONS S - SCHEDULED A - EQUIPMENT FAILURE (EXPLAIN) 1 - MANUAL FOR PREPARATION OF DATA B - MAINTENANCE OR TEST 2 - MANU AL 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 EXAM! NATION F - ADMINISTRATIVE (5)

G - OPERATIONAL ERROR (EXPLAIN) EXHIBIT I- CAME SOURCE H - OTHER (EXPLAIN)

Dock:t No. 50-353 Attachm:nt to Monthly

, Operating Report for December 1996 Limerick Generating Station l Unit 2 1 December 1 through December 31,1996 I

1. Narrative Summary of Operatina Experiences Unit 2 began the month of December 1996 at a nominal 92% of rated thermal power (RTP) in end of cycle coastdown.

On December 6,1996 at 2338 hours0.0271 days <br />0.649 hours <br />0.00387 weeks <br />8.89609e-4 months <br />, the reactor was manually shut down and the main turbine was taken off line due to EHC pressure switch tubing failure and fluid leak. {

On December 13,1996 at 1628 hours0.0188 days <br />0.452 hours <br />0.00269 weeks <br />6.19454e-4 months <br /> the reactor was taken critical and on December 14, 1996 at 1621 hours0.0188 days <br />0.45 hours <br />0.00268 weeks <br />6.167905e-4 months <br /> the main turbine was synchronized to the grid. Power was restored to 48% RTP on December 18,1996 at 1614 hours0.0187 days <br />0.448 hours <br />0.00267 weeks <br />6.14127e-4 months <br />.

On December 18,1996 at 2150 hours0.0249 days <br />0.597 hours <br />0.00355 weeks <br />8.18075e-4 months <br />, the reactor was manually shut down due to longitudinal cracking in the main condenser neck seal gasket. On December 22,1996 at 1618 hours0.0187 days <br />0.449 hours <br />0.00268 weeks <br />6.15649e-4 months <br /> the reactor was taken critical and on December 23,1996 at 1625 hours0.0188 days <br />0.451 hours <br />0.00269 weeks <br />6.183125e-4 months <br /> the main turbine was synchronized to the grid. Power was restored to 37% RTP on December 24,1996 at 0605 hours0.007 days <br />0.168 hours <br />0.001 weeks <br />2.302025e-4 months <br />.

On December 24,1996 at 0613 hours0.00709 days <br />0.17 hours <br />0.00101 weeks <br />2.332465e-4 months <br />, the reactor was manually shut down due to a tripping of the "B" reactor recirculation pump resulting in entry into the exclusion region of I the Unit 2 power flow map. On December 24,1996 at 2114 hours0.0245 days <br />0.587 hours <br />0.0035 weeks <br />8.04377e-4 months <br /> the reactor was taken I critical and on December 25,1996 at 1256 hours0.0145 days <br />0.349 hours <br />0.00208 weeks <br />4.77908e-4 months <br /> the main turbine was synchronized to l the grid. Power was restored to 17% RTP on December 25,1996 at 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br />.

On December 25,1996 at 1409 hours0.0163 days <br />0.391 hours <br />0.00233 weeks <br />5.361245e-4 months <br /> the main turbine was tripped due to high vibration.

On December 26,1996 at 0345 hours0.00399 days <br />0.0958 hours <br />5.704365e-4 weeks <br />1.312725e-4 months <br /> the main turbine was synchronized to the grid. I Power was restorad to 87% RTP on December 27,1996 at 0644 hours0.00745 days <br />0.179 hours <br />0.00106 weeks <br />2.45042e-4 months <br />, l Unit 2 ended this operating period at 87% of RTP in end of cycle coast down.

II. Challenaes to Main Steam Safety Relief Valves There were no challenges to the Main Steam Safety Relief Valves during the month of December.

l l

1

AVERAGE DAILY POWER LEVEL ,

DOCKET NO. 50-353 '

UNIT UMERICKUNIT2 , ,

DATE JANUARY 7,1997 COMPANY PECO ENERGY COMPANY [

ROBERT A. BAXLEY '

REPORTS ENGINEER SITE ENGINEERING UMERICK GENERATING STAT'ON ,

TELEPHONE (610)718-3767  ;

MONTH DECEMBER,1996 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWE-NET) (MWE-NET) t i

1 1000 17 263 -

18 293 I 2 1005 3 1005 19 0 4 992 20 0

  • 5 987 21 0 6 996 22 0  :

f 7 0 23 75 .

8 0 24 93 ,

9 0 25 0 l

10 0 26 145 ,

11 0 27 910 g i

12 0 28 957 [

13 0 29 952 e 14 0 30 956 '-

15 114 31 964 t

16 181 l t

r t

f b

k

m 4 OPERATING DATA REPORT .

I DOCKET NO. 50 - 353  !

DATE JANUARY 7,1997 i COMPLETED BY PECO ENERGY COMPANY . I ROBERT A. BAXLEY f REPORTS ENGINEER  !

SITE ENGINEERING LIMERICK GENERATING STATION s TELEPHONE (610) 718-3767 4 i-OPERATING STATUS j

1. UNIT NAME: ~~~~----~~~~~~-~~~-~~~~-~~~~~~---~~~--~~------~~ LIMERICK UNIT 2 NOTES: THERE WAS ONE LOAD DROP i
2. hEPORTING PERIOD: , _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ DECEMB E_R 11_996 }

GREATER THAN 20% THIS MONTH i

3. LICENSED THERMAL POWER (MWT):,,_____________________________3458 t DUE TO AN EHC LEAK.
4. NAMEPLATE RATING (GROSS MWE): 1163
5. DESIGN ELECTRICAL RATING (NET MWE): __________________________1115 c
6. MAXIMUM DEPENDABLE CAPACITY (GROSS MWE): __________ ,__________1155

! 7. MAXIMUM DEPENDABLE CAPACITY (NET MWE): 1115  !

8. IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS 3 THROUGH 7 ) SINCE LAST REPORT, GIVE REASONS: f i
9. POWER LEVEL TO WHICH RESTRICTED,IF ANY (NET MWE):
10. REASONS FOR RESTRICTIONS,IF ANY:

I i

THIS MONTH YR-TO-DATE CUMULATIVE  !

I 11, HOURS IN REPORTING PERIOD 744 8,784 61,200

12. NUMBER OF HOURS REACTOR WAS CRITICAL 477.4 B,494.4 56,027.2 i 13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 0.0 8,347.3 54,939.1 '

)

1

14. HOURS GENERATOR ON-LINE 400.1
15. UNIT RESERVE SHUTDOWN HOURS 0.0 OI) 0.0 t
16. GROSS THERMAL ENERGY GENERATED (MWH) 942,031 28,079,011 176,424,744
17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 296,600 9,312,400 58,390,280 i
18. NET ELECTRICAL ENEROY GENERATED (MWH) 283,072 9,001,100 56,304,731 j FAGE 1 OF 2 ,

.i

_ _ - _ _ . _ - _____ - --_-_ . _ _ _ _ _ - _ _ _ - _ _ _ _ - _ _ - _ _ _ _ . _ _ _ _ _ _ .- -_____ - _ _ _ _ - - - - - _ _ _ _ _ _ - _ _ _ _ _ -- _ ~ - _ _ - _ _ - -. - - -

OPERATING DATA REPORT (CONTINUED)

DOCKET NO. 50 - 353 DATE JANUARY 7,1997 THIS MONTH YR-TO-DATE CUMULATIVE

19. UNIT SERVICE FACTOR 53 8 % 95.0 % 89B %
20. UNIT AVAILABILITY FACTOR 53.8 % 950 % 89.8 %
21. UNIT CAPACITY FACTOR (USING MDC NET) 34.1 % 91.9 % 85.8 %
22. UNIT CAPACITY FACTOR (USING DER NET) 34.1 % 91.9 % 85.8 %
23. UNIT FORCED OUTAGE RATE 46.2 % 5.0 % 3.6 %
24. SHUTDOWNS SCHEDULED OVER THE NEXT 6 MONTHS (TYPE, DATE AND DURATION OF EACH):

REFUELING OUTAGE SCHEDULED FOR 1/31/97 LASTING 25 DAYS.

25. IF SHUTDOWN AT THE END OF REPORT PERa'D, ESTIMATED DATE OF STARTUP:
26. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATIONS): FORECAST ACHIEVED INITIAL CRITICALITY 08/12/89 08/12/89 INITIAL ELECTRICITY 09/01/89 09/01/89 COMMERCIAL OPERATION 02/01/90 01.0 &90 PAGE 2 OF 2

UNIT SHUTDOWNS AND POWER REDUCTIONS

  • DOCKET MO. 50-353 '

UNIT NAME LIMERICK UNIT 2 .

DATE JANUARY 7,1997 COMPLETED BY PECO ENERGY COMPANY '

ROBERT A. BAXLEY REPORTS ENGINEER SITE ENGINEERING LIMERICK GENERATING STATION .

REPORT MONTH DECEMBER,1996 TELEPHONE (610)718-3767 METHOD OF LICENSEE SYSTEM COMPONENT CAUSE AND CORRECTIVE TYPE DURATION REASON SHUTTING DOWN EVENT CODE CODE ACTION TO WO. DATE (1) (HOURS) (2) REACTOR (3) REPORT # (4) (5) PREVENT RECURRENCE 158 961206 F 185.0 A 2 2-96-007 HA INSTRU REACTOR WAS SHUTDOWN DUE TO A FAILED PRESSURE SWITCH ON THE EHC SYSTEM.

159 961218 F 114.6 A 2 N/A HC HTEXCH REACTOR WAS SHUTDOWN DUE TO CRACK IN THE MA!N CONDENSER NECK SEAL GASKET.

160 961224 F 30.7 A 2 2-96-009 C8 MECFUN REACTOR WAS SHUTDOWN DUE TO A FAILED SCOOP TUBE POSITIONER ON THE 2B MG SET.

161 961225 F 13.6 A 4 N/A HA TURBIN REACTOR POWER WAS REDUCED TO 15% DUE TO HIGH VIBRATION ON THE MAIN TURBINE.

TOTAL HOURS 343.9 I

(1) (2) (3) (4) >

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

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