ML20042E312
| ML20042E312 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 03/31/1990 |
| From: | Leitch G, Jerome Murphy PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9004200598 | |
| Download: ML20042E312 (13) | |
Text
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- T.S.6.9.1.6 PHILADELPHIA ELECTRIC COMPANY 3905060710 !
LIMERICK GENEFs ATING STATION P. O. SOX A S AN ATOG A. PENNSYLV ANI A 19464 (215) 3271200, EXT. 3000 OR AH AM M, L tlTCH
.. ....;'".:::::::'.,.,,. i April 9,-1990 Docket Nos. 50-352 i 50-353 License Nos. NPF-39 NPF-85
.[
t U.:c S.: Nuclear: Regulatoryucommissionr, s , 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 Linerick_ Units I and 2 for the month of March, 1990 forwarded pursuant to - Technical Specification 6.9.1.6. i I
)
-t Very truly yours, f' ,Q c ,
KWM/kk Enclosure cc: William T. Russell, Administrator, Region I, USNRC T. J. Kenny, USNRC Senior Resident Inspector 1
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( 9004200598 900331 II PDR ADOCK 05000352' R PNU /
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39050607-10
- Docket No'. 50-352 Attachment to Monthly Operating Report'for March 1990-Limerick Generating Station Unit 1 March-1.through March 31, 1990
- 1. Narrative Summary of Operatina Exoerienegg Limerick Unit.1 began-the month of March at.a-nominal 100% of '
rated theru l power.. On-March 8, reactor power.was reduced to 90% to accommodate Main Turbine Control: Valve testing._ On_ March 14, reactor _ power was reduced-to 79%'due to reachingLan administrative limit on reactor water _ chemistry for feedwater soluble copper contenty of .30 ppb.- Return to - 100% ' power commenced' March'.221after feedwater. copper stabilized at .24 ppb, achieving.-100% power _on MarchL23. On March-28,ireactor~ power was reduced briefly _ to 90% _ to accommodate a control rod ' pattern adjustment. Operational events that occurred daring the month of March 1 = included: i On March 31 an.I & C Techni'cian inadvertentlyfswitched the '1A' Main Steam Line Radiation Monitor.out of operate-mode, while performing the '1E' -IRM . calibration test, l instead of the '1E' IRM. ; A half scram signal =,!along with 1 a NSSSS isolation signal, was generated. - The '1A'~ Main Steam Line Radiation Monitor was immediately returned to , operate and the half scram and isolation _ signals were. R reset. A four hour notification was made-pursuant to _j 10CFR50.72 (b, (2) (ii) ~.
~
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II. Challences to Main Steam Safety Relief Valves i There were no challenges' to the Main Steam . Relief Valves ! during the month of March. 4 y i j
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# ' DOCKET NO. 50 - 352 --
DATE APRIL 3. 1990 __ l COMPLETED BY PHILADELPHIA ELECTRIC COMPANY ; 1
- J.'J.* MURPHY- -"
REPORTS SUPERVISUR PROJECTS DIVISION
--LIMERICM GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3752 .-
OPERATING STATUS l NOTES: THERE WAS UNE LOAD j
- 1. UNIT NAME: LIMER!CK t! NIT 1 t
- REPORTING PERIOD:
. MARCH.'l1990 ') . REDUCTION GREATEM l
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- 3. LICENSED THERMAL P"JwER ( .#wT ) : 3293 l THAN 20% THl$ MONTH.
- 4. NAMEPLATs. RATIWG (GROSS MWEf: 1138 l.
1055 ' l -.
- 5. DESIGN ELECTRICAL RATING (NET MwE): _- - _ .. ;
i
- 6. 4 ~! MUM DEDENDABLE CAoACITV (GmOSS MWE): 4092 l
_ - - - . .j MAXI?4UM DEPENDABLi CAPACITb (NET WWE)- 1055 l
= . ----- -- ---- __
- 6. IF CHANGES OCCUR IN CAPACITV RATINGS.(ITEMS NUMBER S THROUGH~7) SINCE LAST REPORT...GIVE WEASONS:
- 9. POWER LEVEL TO WHICH RESTRICTED. IF ANY (NET.MWE):
- 10. NEASONS FOR RESTRICTIONS. fF ANY:
THIS MONTH VR-TO-DATE ' CUMULATIVE.
- 744 2;160 36.480
- 1. HOURS IN REPORTING PERIOD
- 12. NUMBER 08 HOURS REACTOR WAS CRITICAL 744.0- 12.160.0 29.288.8 O.D. 0.0 0.0
- 13. REACTOR RESERVE SHUTDOWN HOURS' --- _ _ - - - - - - - - - - -
14 HOURS GENERATOR ON-LINE 744.0 2.160.0 28.831.6 15,: UNIT RESERVE SHUTDOWN HOURS 10.0 - 0.O' O.O
- 16. GROSS THERMAL ENERGY GENERATED (MWH)'
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2.298.372 6.902.708 84.766.148
- 17. GROSS ELECTRICAL ENERGV GENERATED (MWH) 744.290. 2.237.930 27.424.500
- 18. NET ELECTRICAL ENERGY GENERATED ~ (SAWH) - _
716.743 2.159.301 ~26.215.697'
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- OP. ER ATING DOTO: f,SEPORT.-(CONTINUED).. -
.- "xDOCKET NO.i50 v -
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- THIS MONTH- VR-TO-DATE' : CUMULATIVE ,
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- 19. UNIT SERVICE FACTOR . 100.0 - 1U0.0 79.0 ; 1* ' y
- 20. 'S-T AVAILABILITV FACTOR 1100.0 100.0.. ; 79.0 ;
____- ._--- _<_ ~7'. ; ~ 21 L..fT'CAPACITV FACTOR (U3ING MDC NET) 91.3 94.8. 68.12 Q-; __ _ __ ___
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22e UNIT CAPACITV FACTOR (USING DER NET) '91.3 94.8- 68.1
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"24 SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS-(TYPE IDATE.-AND DURATION OFjEACH):
- 25. .IF 5HUTDOWN AT EM OF. REPORT PERIOD.f ESTIMATED DATE OF STARTUP: ,.. .
=-
- 26. ' UNITS IN -. TEST STATUS:( N IOR.TC. COMMERCIAL OPERATION)i FORECAST $ ACHIEVED-
. INITIAL. CRITICALITY 12/19/64- 12/22/84'?
INITIAL ELECTRICITY ,MID APRIL 85 4/13/85-COMMERCIAL OPERATION. 1ST,QTR 86 2/01/86- - P _. . e ip4* t. _r- s
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' '-' _4 - --REPORT MONTH' . MARCH, ::1990 : COMPLETED BV PHILAD,CLPHIA ELECTRIC COMPANV'. -
- :< J.'J. MURPHY. .
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cPROJECTS DIVISION- .
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327f12OO EXTENSION-- -3752,- -
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METHOD OF I ' LICENSEE .SYSTEWlCOMPONENTI CAUSE AND CDRRECTIVE' CODE-I CODE lC . ACTION-TO i- _ . 'lTYPElDURATIONl REASON SHUTTING DOWN]- EVENT
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1NO.l DATE -(-(1)l.(HOURS)l. -(2) REACTOR (3) l- REPORT s- -(4)-I -(5)' I' PREVENT RECURR$NCE _ i -. . l !; .. 4 ~N/A: ZZ- " ZZZZZZ . = l LOAD WAS REDUCED -: 10% TO A%O90DATE MAIN ' 9.l 900308 ' 'S2 000.0 B'
' l TURBINE.. CONTROL. VALVE-TESU NG.
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'10 900314= F 000 O .l- 'F 4 N/A ZZ .ZZZZZZ LOAD WAS REDUCED 21% DUE'TO REACHING AN '
. ADMINISTRATIVE' LIMIT ON REACTOR WATER.. ~,
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.1: OF.;30 PPBJ -
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METHGD), EXHIBIT G -' INSTRUCTIONS
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/B- MAINTENANCE OR TEST .2-- MANUAL SCRAM. .: ENTRY SHEETS FOR LICENSEE: "
JN - C. -REFUELING .E3 - A9TOMATIC. SCRAM. '-EVENT REPORT (LER)7
-FILE..(NUREG-0161)-
4 - OTHER'(EXPLAIN}
~D.- REGULATORY RESTRICTION- ..
4 E~- OPERATOR TRAINING + LICENSE EXAMINATION.' Ff- ADMINISTRATIVE'- - 1(S) ~' JG -_'ODERATIONAL ERROR (EXPLAIN 3
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390506017101
' Docket No.-50-353-~
Attachment to Monthly-Operating Report for-March-1990: Limerick Generating Station Unit 2 March'1 through March 31, 1990-I. Narrative Summary of Operatina Experiences Limerick Unit,2 began.the mouth of March at a nominal 100% of rated thermal power.- On March 13,-reactor power was reduced briefly to_96% when the '2A' reactor - feedpump ~ (RFP) tripped . after the '2A' RFP minimum flow valve. failed open.;On: March- :! 22, reactor-power was reduced to 85% to accommodate a' control-rod pattern adjustment and Main Turbine Control Valve testing. 1
.On March: 25,: reactor ' power was reduced to - a nominal 20% ; and-
~
l the Main Turbine Generator'was manually tripped due to an: oil' ! leak.at a welded joint on the Electro' Hydraulic Control Oil
. System Fluid- Actuating Srpply_ .line = for the L #2 Main. Turbine b Control Valve. Manual'EHC isolation-valves were closed to' !
isolate the problem area and: maintain Main Turbine bypass i valve capability. . _ on March 27, J the reactor. was - manually . scrammed - and placed~ in cold shutdown: when1 reactor- water - I che"stry conductivity indicator increased significantly,- i sugpsting a condenser tube leak.- A severed condenser' tube and' ; several severely steam eroded . tubes were. found1 to be = the
~
problem. Limerick Unit 2 ended thel month in cold shutdown;in - 4 a short maintenance outage. 1 1 Operational events that occurred 1during the : month of March ' included: On March 8, HPCI was declared inoperable after a broken air line was discovered on the HPCI steam Eline- drain - valve. This failure caused the valve _to ~ reposition, - preventing-steam line drain pot drainage.: The broken air 1;[ line'was repaired and HPCI was later. declared operable. O A four hour NRC notification was made due to an unplanned. d outage of a' single train safety system.'. j
,1 On March 9, the '2B' shunt . trip- breaker on the '2B' l RPS/UPS power supply- _ tripped on underfrequency.
This caused c loss of the '2B' RPS/UPS power supply. The loss of power initiated various NSSSS isolations and: : ESF g actuations. Following the resetof the shunt _ trip i breaker, all isolations were reset. The suspected'cause of the event was inadvertent jarring cf the inverter l
>l cabinet by a worker in the area.-. A four houri NRC .
notification was made for an ESF actuation. 1 L ._ , J
3905060710 On March 12, while: performing a calibration / functional test on- Post Accident Monitor (PAM)' recorder, ~ a' spurious -
'B' Channel Reactor ; low- level signal f occurred. The signal _was generated when the pressure. transmitter for the ' PAM was being valved back into ' service. 1The isolation signal caused.the Suppression; Pool Hydrogen-Oxygen ' Arialyzer . and containment leak detectors to j_ .
isolate. HPCI initiated,: but did not- inject due to the. d extremely short duration of the ~ initiating. signal. .HPCI-
~
1 was secured and tho.NSSS isolations were reset. :A.four hour NRC notification was' made due to an ' inadvertent ESF - actuation.. - On March 13, the 2A' Reactor Feed Pump: (RFP) -tripped on j low suction < pressure'due to a' failed power supply to~the. U
'2A' -
RPF , minimum flow recirculation . valve controller. The failure caused the minimum flow valve to open' fully, _ q allowing-the '?A' RFP to. runout. .The;'2A' RFP trip was i reset and the reactor feed pump was-returned _to service. The power supply _ was repaired' and the-minimum flow valve-was successfully stroked and returned to service.- on March 24,. personnel observed that thei #2 Main Turbine 1 Control. valve EHC system was leaking EHC; fluid at'a rate i of approximately_2 gallons per. hour.- It..was determined that the Main Turbine 'would ' haveito._ be expeditiously- 1 removed. from service ~ due to -- the Edegrading E EHC piping ' leak. Steps wereoimmediately'taken:to-reduce reactor' ! power, and later ' to 4 manually trip E the Main ? Turbine'.- Manual EHC isolation valves were closed to isolate the ; problem - area and L to maintain .- bypass . valve capability. A clamp mechanism was fabricated-and'a leak repair was performed to'the EHC. piping: joint. . 4 On March 27, significant' increases.:in conductivity were observed. The Unit 2 reactor was manually shutdown for ' a short maintenance outage.for condenser:tubeytesting. j A severed condenser tube, along with several eroded tubes = .! were found'and plugged by Maintenance during the waterbox inspe.:tions. Following'all repairs andl installation of a baffle plate, the condenser waterboxes.were refilled-and returned to service. On March 30, a small' fire in the.'2B' RPS/UPS invertor caused a loss of the '2B' RPS power supply _ bus. The loss . of-power caused a< loss of RHR shutdown cooling, along> -l with several other NSSSS isolation signals. The fire was ; extinguished in 3 minutes. lRHR- shutdown cooling; was :) restored within 17 ' minutes. The' '2B' RPS bus :was- : resme? w V *:? the invertor bypassed. All NSSSS : lsol' > ..n w er i r 'et. A four. hour NRC' notification was j made 4 - a E. actuation. The L ' 2 B ' RPS ' ' invertor ' cadu. *
- m.>2ced and the '2B' RPS/UPS invertor was retut.. c. L m ..tce on. April-.2.
I ( 4- ,,
3905060710 II. Challences to Main Steam Safety Relief Valves There were no -- challenges Lto the - Main Steam Safety Relief Valves.during the month of March. i r
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-WONTH MARCH'1990 *
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DAV AVERAGE-DAILY. POWER' LEVEL ' DAY .' AVERAGE DAILY POWER LEVEL = ' W (MWE-NET) (JewE-NET) 17 t' 1059
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OPERATING D3TA REPORT
.~ -
DOCKET NO. 50 - 353 v DATE APRIL 3
- =
1990-- 3905060710-COMPLETED BY PHILADELPHIA ELECTRIC COMPAdY
, J. J. MURPHY-
. REPORTS SUPERVISOR.
PROJECTS DIVISION LIMERICK GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3752 OPERATING STATUS 1 NIT NAME: LIMERICK UNIT 2 NOTES:. THERE WAS ONE LOAD' DROP .I
- 2. REPORTING PERIOD: MARCH. 1990 TO 20% BEFORE THE UNIT
- 3. LICENSED THERMAL POWER (MWT):
3293 "AS FOnCEo OFF. 4 NAMEPLATE RATING (GROSS MWE): 1138
- 5. DESIGN ELECTRICAL RATING (NET MWE): 1055
- 6. MAXIMUM DEPENDABLE CAPACITY (GROSSMWEh 1092'
- 7. MAXIMUM DEPENDABLE CAPACITY (NET MwE):
' 1055
------ --c _----
- 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-
*1 HOURS ~IN REPORTING PERIGD '
744 1.992 . g
- 12. NUEBER OF HOURS REACTOR WAS CRITICAL 641.6 1,869.0 1.889.6
- 13. REvCTOR RESERVE SHUTDOWN HOURS 'OO O.0 0.0 14 HOURS GENERATOR ON-LINE. [579.6: 1.827.6f 1.827.6
- 15. UNIT RESERVE SHUTDOWN HOURS' . O.0 . 0.0 - 0.0 ,
16. GROSSTHERMALENERGYGENERATED_OmWh)' 1.941 053 .6,044.282: 6.04d.282
- 17. GROSS ELECTRICAL ENERGY' GENERATED (MWH) 638.170; '2.024.390- 2.024.390
. 18. NET. ELECTRICAL-ENERGY GENERATED OmWi). .614.474 1.951.599 1.051.599
- 3 PAGEl1 OF 2 e
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- 4 3 c. W ,Eg4,. -eer hy g=9*wd'i*r-, ,.-N g-S ~.3n.-e--2m y yg=s ..,- *e .-r -v'
m. M OPERATING DATA f.EPORT (CONTINUED) .s.
.. , -DOCKET HO. 50 - 353 -
390.5060.710; DATE' APRIL'3; 1990~
-- e e
THIS MONTH YR-TO-DATE. CUMULATIVE -
- 19. UNIT, SERVICE FACTOR 77.9 '93.7 91,7' I^
- 20. UNIT AVAILABILITY FACTOR 77.9 21.-UNIT CAPACITY FACTOR (USING MDC NET) 78.3 91.7
}l.7
'92.9 92.9 -
- 22. UNIT. CAPACITY FACTOR (USING DER NET) ' 78.3 92.9- 92.9 ;
- 23. UNIT FORCED OUTAGE RATE-
- 22.1 8.3 .
,g,3 24.
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 '?4TUS (PRIOR TO COMMERCIAL OPERATION): ' FORECAST ~ ACHIEVED-INITIAL CRITICALITY 8/12/89' '8/12/89 -
INITIAL ELECTRICITv _9f01/89 . ,9/01/_89 - _ COWERCI AL OPERATIO% , _2/01/90 J/08/90 g.
PAGE 2 OF 2L 4
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' : UNIT 'SHUTDOBJ'. 6MD POWER REDUCTIONS -DOCKET NO.'50 m 353. - T.' M
~
4 _ - . UN11me uMeaICe (UNIr # 7390506.071107 / DATE APRIL 3.1 1990 REPORT MONTH. ~MA1Ch. 1990 COMPLETED BV PHILADELPHIA. ELECTRIC COMPANY J. ,J.' MURPHY' - LREPORTS SUPERVISOR 2" PROJECTS DIVISION- ' e . LIMERICK GENERATING STATION- ' 3
; - . TELEPHONE.(215)1327-1200 LXTENSION 3752
~
l' T METHOD OF LICENSEE ISYSTEMICOMPONENT 2CAUSE~AND CORRECTIVE $ lTVPEDURATION] REASON SHUTTING I'OWN EVENT l CODE ! CODE ~ : ACTION TO: P.O . i GATE I (1) (HOURS)l (2) REACTOR (3) i REPORT # l (4) l (5) . PREVENT RECURRENCE 1 . . I t I l ' '. ZZ l ZZZZZZ 4 & 900'112 ' S - 000.0 8 4 1 - N/ A _ LOAD-WAS REDUCED 15% TO ACCOM00 ATE'A
' CONTROL ROD PA? TERN ADJUSTMENT AND MAIN' TURBINE CONTROL-VALVE (TESTING.
< c-
) .. ,
5 900325" F 000.0 A 4 N/A: ZZ : .ZZZZZZ GENERATOR OFFLINE AND REACTOR POWER . . . .
- l. MAINTAINED AT.20% FOR~ REPAIR OF'EHC OIL SYSTEM FLUID ACTUATING SUPPLV..LINE.
6 900327 F 102.4 A 2i l :ZZ' I ZZ m Z. REACTOR WAS SHUTDOWN WHEN THE REACTOR-i ., . WATER CHEMISTRY CONDUCTIVITV INDICATOR' ' W 'l / SPIKED. SUGGESTING ~A CONDENSER TUBE' FAILURE. l . 1 102.4 'l l ! l 'l ;
~
(1) (2)~ (3) , E(4)
.Fe FORCED .. REASON . ' METHOD: ' EXHIBIT G -' INSTRUCTIONS-
~
~
S - SCHEDULED A - EQUIPMENTFAYLURE (EXPLAIN)' J1 'MANPAL- . FOR-PREPARATION OF DATA -
'S - MAINTENANCE OR TEST-T - MAN %C. SCRAM. SHEETS FOR LICENSEE' C-- REFUELING' . . 3 r AUTOTATIC-SCRAM. _. EVENT ENTRY ~ REPORT..(LER)
--D: .REGULATORV" RESTRICTION , . . . . 4 - OTHER.(EXDLAIN)' . FILE (NUREG-0161)-
E'- OPERATOR. TRAINING 4~LIC TE ?JAMINATION " _(5) + F- ADMINISTRATIVE ..
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