ML19354D759

Monthly Operating Repts for Dec 1989 for Limerick Generating Station Units 1 & 2

ML19354D759
Person / Time
Site:	Limerick
Issue date:	12/31/1989
From:	Jerome Murphy PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML19354D760	List: ML19354D759 ML19354D968 ML19354D973
References
NUDOCS 9001190228
Download: ML19354D759 (11)

Text

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3901010490 Docket No. 50-352 Attachment.to Monthly Operating Report for December 1989 Limerick Generating Station Unit 1 December 1 through December 31, 1989 I

I.

Narrative Summary of Operatina Exoeriences Limerick Unit 1 began the month of December at a nominal 78%

of rated thermal power.

Reactor power had been reduced to 73%

on November 30 to support a control rod pattern adjustment.

Reactor power was restored to 100% on December 1.

Two other power reductions from 100% were performed during the month to r

L support control rod pattern adjustments.

Power was reduced to 85% on December 15 and power was reduced to 90% on December 29.

Limerick Unit 1 ended the month of December in OPCON 1 at a nominal 100% of rated thermal power.

Operational events that occurred during the month of December included:

On December 13, a four hour notification was made to the NRC after plant personnel discovered several failed spot welds on the' "A"

Standby Gas. Treatment System (SGTS) filter train.-

These failed spot welds created holes between the outer down stream screen and the filter mounting frame which allowed charcoal to leak out from the filter bed. The displacement of the charcoal created a possible bypass leakage path through the filter bed which could have prevented the fulfillment of the safety function of the "A"

train of SGTS.

On December 14, a boroscope was used to perform a visual inspection of the area under the "B"

SGTS filter.

The inspection was inconclusive due to the inability to access the total area under the filter bed.

On December 18, the "B" SGTS filter was dismantled and plant personnel found that a small amount of charcoal had leaked from the "B" filter.

However, the filter bed was still filled above the top of the screen indicating the amount f charcoal leakage was not enough to cause a bypass leakage path.

Both filter trains have been repaired, tested and returned to service.

II.

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

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1 3901010490 AVERAGE DAILY UNIT-POWER LEVEL e

1 1

DOCKET NO. 50 - 352

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UNIT LIMERICK-UNIT 1 j

j DATE JANUARY 5, 1990-1 COMPANY PHILADELPHIA ELECTRIC COMPANY J. J. MURPHY REPORTS SUPERVISOR PROJECTS DIVISION

'1 LIMERICK GENERATING STATION i

TELEPHONE (215) 327-1200 EXTENSION 3752 j

MONTH DECEMBER 1989 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL' (MWE-NET)

(MWE-NET) 1 967:

17 1029 f

2 1014 18 1039 3

1033 19 1044

~ 4 1033 20 1059 r

5 1040 21 973 6

1029 22 1039 7

1035 23 1024 8

1035 24 1028 9

1034 25 1032

)

10 1051 26 1033 11 1062 27 1036

.12 997 28 1035 13 1031 29 1008 14-1032 30 1057 15 1019 31 1013 16 1022 L__

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OPERATING DATA REPORT i

i DOCKET NO. 50 - 352

............................. =.

DATE JANUARY 5 1990 COMPLETED BY PHILADELPHIA ELECTRIC COMPANY s

J. J. MURPHY

' REPORTS. SUPERVISOR 4

PROJECTS DIVISION LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3752 OPERATING. STATUS l

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1~. UU5i NAU5I L[5EkICK UNIT 1 E5fiiI iAssi Wini s5 kip 5RiiBLi

2. REPORTING PERIOD: DECEMBER, 1989 LOAD REDUCTIONS GREATER

3. LICENSEQ THERMAL POWER (MWT):

3293 THAN 20% THIS MONTH.

'4.' NAMEPLATE RATING 1 GROSS MWE):

1138 S'. DESIGN ELECTRICAL RATING (NET MWE):

1055

6. MAXIMUM DEPENDABLE CAPACITY (GROSS MWE): 1092

7. CAXIMUM DEPENDABLE CAPACITY (NET MWE) -

1055

8. IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS NUMBER 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 VR-TO-DATE CUMULATIVE

11. HOURS IN REPORTING PERIOD 744 8.760 34.320 12.' NUMBER OF HOURS REACTOR WAS CRITICAL 744.0.

B 784.5 27.128.8 13.' REACTOR RESERVE' SHUTDOWN HOURS 0.0 0.0 0.0 14 HOURS GENERATOR ON-LINE 744.0 5.638.9 26.671.6

,15.-UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0 1

.16.. GROSS THERMAL ENERGY GENERATED (MWH) 2,437.800 17.065.683 77.863.440

-17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 794.500 5.504.900 25.186.570

18. NET ELECTRICAL ENERGY GENERATED (MWH) 765.296 5.213.908 24.056.396 PAGE 1 OF 2 i

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3901010490 B,

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OPfRATING' DATA REPORT (CONTINUFD)

DOCKET NO. 50 - 352 DATE JANUARY 5.'.1990 THIS MONTH

.YR-TO-DATE CUMULATIVE

'19. UNIT SERVICE FACTOR 100.0 64.4' 77.7

~20. UNIT AVAILABILITY. FACTOR.

100.0 64.4 77.7

?2). UNIT CAPr. CITY FACTOR (USING MDC NET) 97.5 56.4 66.4

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<22. UNIT CAPACITY FACTOR (USING DER NET) 97.5 56.4 66.4

23. UNIT FORCED OUTAGE RATE.

0.0 0.0 a.9 2'4. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE. DATE, AND DURATION OF'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. CRITICALITY 12/19/84 12/22/84 INITIAL ELECTRICITY MID APRIL 85-4/13/85 COMMERCIAL OPERATION IST QTR 86 2/01/86 4

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UNIT ~,. SHUTDOWNS 4.ND POWE2 %EDOCTIONS--

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1 REPORT MONTH ' DECEMBER.'1989.

COMPLETED BY PHILADELPHIA ELECTRIC : COMPANY.k

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J.J. MURPHY

-REPORTS SUPERVISOR PROJECTS' DIVISION'-

,2 LIMERICK GENERATING STATIONJ,

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. TELEPHONE (215) 327-1200 EXTENSION 3752-

-METHOD OF'

, LICENSEE 1 : SYSTEM lCOMPONENTI CAUSE AND CORRECTIVE;

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' TYPE DURATION REASON SHUTTING DOWN EVENT' CODE l :. ' CODE

-lJ ACTION TO.

'1; NO.

DATE

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(HOURS)

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REACTOR-(3)

REPORT ar

-(4) 1-(5).'11 PREVENT RECURRENCE-

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

' ENTRY SHEETS FOR LICENSEE' C - REFUELING 3 -- AUTOMATIC SCR AM.

EVENT REPORT /(LER)

E - REGULATORY RESTRICTION 4 - OTHER'(EXPLAIN)

~ FILE (NUREG-0161)'

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

G - OPERATIONAL ERROR (EXPLAIN)

H - OTHER(EXPLAIN)

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3901010490 Docket No. 50-353 Attachment to Monthly Operating Report for December 1989 Limerick Generating Station Unit 2 December'1 through December 31, 1989 I.

Narrative Summary of Ooeratina Exoeriences Limerick Unit 2 began the month of December in power operation at a nominal 100% of rated thermal power.

On December 1, the Unit 2 reactor was scrammed as part of the Main Steam r

Isolation Valve (HSIV) closure startup test and Hot Shutdown was entered.

The reactor was subsequently deprensurized and Cold Shutdown was entered on December 2.

This shutdown began

-a scheduled mini-outage to complete various maintenance l

activities and testing.

Upon completion, Unit 2 entered Startup on December 22.

Power Operation was entered on l-December 24 and reactor power was increased to 80% by December L

26.

On December 27, reactor power was reduced to 50% to I

support a scheduled main condenser tube leak inspection on the "2B" waterbox.

Following the inspection, reactor power was restored to 100% on December 30.

On December 31, reactor power was reduced to 87% to support backwash and precoat operations on the condensate filter demineralizers.

Limerick Unit 2 ended the month of December in power operation at a

nominal 87% of rated thermal power.

Operational events that occurred during the month of December included:

On December 1, the Unit 2 MSIV closure startup test was performed causing a planned reactor _ scram.

During the event, Reactor Pressure Vessel (RPV) water level reached

-43 inches and RPV pressure peaked at 1135 psig.

High Pressure Coolant Injection (HPCI) and Reactor Core Isolation Coolant (RCIC) initiated automatically and were used for RPV level and pressure control.

The Safety Relief Valves also lifted to control RPV pressure. After the unit was stabilized the MSIV's were opened and the RPV was depressurized and placed in cold shutdown using the main turbine bypass valves.

On December 25, while increasing Unit 2 generator load, a loss of stator coolant generator runback occurred when generator current reached 7469 amps.

The runback was caused by low stator cooling pressure due to a reduced generator hydrogen pressure.

Hydrogen pressure was increased from 35 psig to 50 psig, stator cooling pressure was restored, and load set was then raised to close the four turbine bypass valves which had opened during the runback.

y" 3901010490

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II.

Challences to Main Steam Safety Relief Valves On December i during'the MSIV closure'startup test, several Unit 2' Main. Steam Relief ~ Valves (MSRV's) were ' challenged.

During the initial pressure' increase, the ' 2D', ' 2H ', and ' 2S '

MSRV's lifted per design reducing reactor pressure. After the three MSRV's closed, reactor pressure increased again and the

'2B',

'2D',

'2F',

'2H',

'2K',

'2M',

'2N' and 82S' MSRV's lifted.

The eight MSRV's closed per design following a reduction 'in reactor pressure.

A _ subsequent increase in reactor pressure was terminated when the.

'2K' MSRV was intentionally opened manually by the. control' room operator.

/ ',

Following closure of the

'2K' MSRV, reactor pressure was controlled using HPCI and RCIC.

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390.1010490

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AVEQAGE DAILY UNIT PODEQ LEVEL 4

DOCKET NO. 50 - 353 UNIT LIMdRICK UNIT 2 DATE JANUARY 5, 1990 COMPANY PHILADELPHIA ELECTRIC COMPANY J. J. MURPHY REPORTS SUPERVISOR PROJECTS DIVISION i!MERICK GENERATING STATION TELE' HONE (215) 327-1200 EXTENSION 3752 e

4..................

MONTH DECEMBER 1989 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWE. NET)

(MWE-NET) 1 535 17 0

2 0

18 0

3 0

19 0

4 0

20 0

5 0

21 0

6 0

22 0

7 0

23 0

8 0

24 15 9

0 25 460 10 0

26 810 11 0

27 613 12 0

28 484 13 0

29 488 14 0

30 964 15 0

31 964 16 0

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3901010490

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OPERATING DATA REPORT DOCKET NO. 50 - 353 DATE JANUARY 5, 1990 I

COMPLETED BY PHILADELPHIA ELECTRIC COMPANY J. J. MURPHY REPORTS SUPERVISOR PROJECTS DIVISION LIMERICK GENERATING $TATION TELEPHONE (215) 327-1200 EXTEN520N 3752 OPERATING STATUS i'

1. UNIT NAME: LIMERICK UNIT 2 NOTES: A FULL power LICENSE

2. REPORTING, PERIOD: DECEMBER. 1989 wAS 1$$UED ON B/25/89.

3. LICEN$ED THERMAL POWER (MWT):

3293 THE STARTUP TESTING 4 NAMEPLATE RATING (GROSS MwE):

1130 PROGRAM 1$ IN PROGRESS.

l

5. DESIGN ELECTRICAL RATING (NET MWE):

1055 COMMERCIAL OPERATION !$

6. CAXIMUM DEPENDABLE CAPACITY (GROS $ MWE):

EXPECTED IN JANUARY. 1990.

.7.

CAX1 MUM DEPENDABLE CAPACITY (NET MWE):

8.

IF CHANGES OCCUR IN CAPACITY RAT]NG$ (ITEMS NUMBER 3 THROUGH 7) SINCE LAST REPORT. GIVE REASONS:

9. POWER LEVEL TO WHICH RESft.CTED. IF ANY (NET MnE):

10. RE050NS FOR RESTRICTIONS, IF ANY:

THIS MONTH YR-TO-DATE CUMULATIVE

.11.

HOU3$ IN REPORTING PERIOD 744 3396:5,,

,,,,;3396.5,

12. NUMBER OF HOURS REACTOR WAS CRITICAL 221.0

... 2.4 2. 9. 3..

.... 2429 3

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 0.0 Lo, HOURS GENER ATOR ON-LINE 192.0

... 17. 5. 7. 9..

.... 1757 9

~15.

UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED (MWH) 412.421 3.L.42.1.107 4 5

3.L.42.1.107 4 5

17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 133.810 1.L.16.1.960 0 1.,.116.1.60 0 1

9

18. NET ELECTRICAL ENERGY GENERATED (WWH) 124,628 1.L.6.1 989. 0 1.,.061.,.989 0 0

2 PAGE 1 0F 2 l

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3901010490 pq OPERATING DATA REPORT (CONTINUED)

DOCRET NO. 50 - 353-DATE JANUARY 5, 1990 i

THis MONTH VR-TO-DATE CUMULATIVE l

19. UNIT SERVICE FACTOR' 25.8

$1.7

$1.7 I

20. UNIT AVAILAt!LITY FACTOR

21. UN1T CAPACITY FACTOR (USING MDC NET) i

22. UNIT CAPACITY FACTOR (USING DER NET) j

23. UNIT F,0RCED OUTAGE RATE

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

i WARRANTY RUN PREPARATIONS ARE IN PROGRESS

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

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

FORECAST ACHIEVED INITIAL CRITICALITY

..8./.12./.8 9... 8./.12./.8 9.'

1NITIAL ELECTRICITY

. 9./.01./.89..

..9./.01./.8 9

'I COMMERCIAL OPERATION

. 2./.01./.9 0..

t 6 NOT QQPLICABLE PRIOR TO COMMERCIAL OPERATION

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f39.01010490 3 treIT SHUTDOWNS AND POWER REDUCTIONS DOCstET NO. '50.- 353 UNIT NAME LIWERICK-

-UNIT 2

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DATE JANUARY SA 1990

.24

-REPORT WONTH DECEMBER. 1989-CO*PLETED BY PHILADELPHIA ELECTRIC COMPANY-

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MuRPH4 REPORTS SUPERVISOR PROJECTS DIVISION LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3752 H-1 I

] WETHOD Or i LICENSEE ISYSTEN : COMPONENT l CAUSE AND CORRECTIVE TYPE lDURATIONIREASONISHUTTING DOWNl EVENT l CODE CODE I ACTION TO NO.

DATE.

(1)l (HOURS)l (2) l REACTOR (3) l REPORT a l (4)

-(5) 'l PREVENT RECURRENCE 14 891201 5

552.0 l

B. I I

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FULL MSIV ISOLATION FRom 100%

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4 N/A l -ZZ l ZZZZZZ l STP 25.3. A I

i 1-1 l POWER CAUSED A PLANNED AUTOMATIC SCRAW AND l

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l WAS FOLLowED BY A 23 DAY WAWNTENANCE OUTAGE.

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i 15 891227 1 5 000.0 B l 4

i N/A l ZZ l ZZZZZZ l LOAD WAS REDUCED 30% TO SUPPORT CONDENSER l

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l; LEAK TESTING.

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(1)

(2)

(3)

(4)

F - FORCED REASON WETHOD EXHIBIT G - INSTRUCTIONS S - SCHEDULED A - EQUIPMENT FAILURE (EXPLAIN) 1 - WANUAL FOR PREPARATION OF DATA B - WAINTENA*tCE - 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 - m RATOR TRAINING + LICENSE EXAMINATION F-ADMINISTRATIVE (S)

G - OPERATIONAL ERROR (EXPLAIN).

H - OTHER(EXPLAIN)

EXHIBIT I - SA#E SOURCE 4

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