ML17199T856

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Monthly Operating Repts for Dec 1987
ML17199T856
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 12/31/1987
From: Eenigenburg E, Maxwell D
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
88-014, 88-14, NUDOCS 8801260382
Download: ML17199T856 (24)
v • d • e


Text

OPERATING DATA REPORT DOCKET NO.___;0....;;.5....;;.0_;-2_,3"""7 ___ _

DATE January 7, 1988

. COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 OPERATING STATUS NOTES 1.

Unit Name:

Dresden II

--==-"""""~.........==---------------~

2.

Reporting Period:

Dresden 2

3.

Licensed The rma 1..... P-ow_e_* r----(""M-W.-t""') ;::;..;: ~2-.*-, 5_2_7 __________ _

4.

Nameplate Rating (Gross MWe):

828

5.

Design Electrical Rating (Net-MW-e"'"') __ : ____ 7_94 _________ _

6.

Maximum Dependable Capacity (Gross MWe):

812

---=------

7.

Maximum Dependable Capacity (Net MWe):

772

8.

If Changes Occur in Capacity Ratings ~(-1-tem_s__,,,3-T~h-r_o_u_g.,..h 7) Since Last Report, Give Reasons:

9.

Power Level to Which Restricted, If Any (Net MWe):

NA

_,:;.:..i..:.,:_, ____________________

10.

Reasons For Restrictions, !f Any:

A

--~----------------------------

11.
12.
J 3.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.

This Month Yr-to-Date Hours in Reporting Period 744 8.760 Number of Hours Reactor Was Critical 744.. 0 5, 763. 7 Reactor Reserve Shutdown Hours 0

0 Hours Generator On-Line 744.0 5.345.4 Unit Reserve Shutdown Hours Q.

0 Gross Thermal Energy Generated (MWH) 1,620/239 ll,103,.781 Gross Electrical Energy Generated (MWH) 524,345 3,553,892 Net Electrical Energy Generated- (MWH) 500,562 3,342,347 Unit Service Factor 100.0 61.0 Unit Availability Factor 100.Q 61.0 Unit Capacity Factor (Using MDC Net) 87.2 49.4 Unit Capac i. ty. Factor (Using DER Net)

84. 7
48. 1 Unit Forced Outage Rate
0. 0
8. 5 Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each :

Cumulative 154.584 116,571.2 0

11JI093,.2 0

227,975,863 72,938,993 68,924.990

71. 9
71. 9 57.8 56.2
11. 9 One week outage in May, 1988 for a dual unit outage to perform the 125 VDC Battery Discharge Test.
25.

If Shut Down At End Of Report Period, Estimated Date of Startup:

N/A

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OPERATING DATA REPORT

. DOCKET NO. 050-249 DATE January 7, 1988 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 OPERATING STATUS NOTES Unit Name:

Dresden III Reporting Period:

December, 1987 Licensed Thermal Power (MWt) : __

2.,.,.... 5=.27~-------

Namepl ate Rating (Gross MWe) : _ __,.w8.wi28.._ ______ _

Design Electrical Rating (Net MWef:

7~

Maximum Dependable Capacity (Gross -M~W~e;f....._:::~s~1-:2:_-:_-:_-:_-:_-:_-:_-:_-:

1.
2.

3,

4.
5.
6.
7.
8.

Maximum Dependable Capacity (Net MWe) : _ __._77...,3 ____ _

If Changes Occur in Capacity Ratings (Items 3 Through 7) Since Last Report, Give Reasons:

NA

9.

Power Level to Which Restricted, If Any (Net MWe): NA

....;;,;,J.,;;.;;, ______________

10.

Reasons For Restrictions, If Any: _...._,...,__ ____________________ __

This Month Yr-to-Date ll. Hours in Reporting Period 744 8.760 *

12.

Number of Hours Reactor Was Critical 744.0 7,208.6 *

13.

Reactor. Reserve Shutdown Hours 0

  • O
14.

Hours Generator On-Line 744.0 6,595.5

15.

Unit Reserve Shutdown Hou.rs 0

0

16.

Gross Thermal Energy Generated (MWH) 1,684,851 14,571,519

17.

Gross Electrical Energy Generated (MWH) 550,266 4,627,093

18.

Net Electrical Energy Generated. (MWH) 527,408 4,395,502

19.

Unit Service Factor 100.0 75.3

20.

Unit Availability Factor 100.0 75.3

21.

Unit Capacity Factor (Using MDC Net) 91.7 64.9

22.

Unit Capacity Factor (Using DER Net) 89.3 63.2

23.

Unit Forced Outage Rate 0.0 24.0

24.

Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each March, 1988 Refueling Outage - approximately 15 weeks.

25.

If Shut Down At End Of Report Period, Estimated Date of Startup:

N/A Cumulative

.144,169

. 106,562.2 0

98,845.9 0

201,382,616 65,031,612 61,577,820 68.6 68.6 55.3 53.8 13.3

NO.

DATE None 1

F:

Forced S:

Scheduled

-~ ; j r*' -:.

UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH ~~D~E=C=E=MB=.,;;;;E~R~

1 ~1~9~8~7~

METHOD OF LICENSEE TYPEl DURATION* REASON2 SHUTTING EVENT SYSTEM COMPONENT 2

(HOURS)

DOWN REACTOR3 REPORT ff Reason:.

  • A-Equipment Failure (Explain)*

B-Maintenance o~ Test C-Re fue 1 ing' D-Regulatory Restriction E-Operator Training & License Examination F-Administrative G-Operational Error H-Other (Expl~in)

  • CODE4 CODES Method:

1:...M~nual 2-Manual Scram J~Automatic Scram 4-0ther (Explain)

DOCKET NO.QS0-237

....;...;,------~~~~~

UNIT NAMEnresden. II.

DATEJanuary 7, 1988 COMPLETED BYD. C. Maxwell TELEPHONE {815) 942.;,,,2920 CAUSE & CORRECTIVE ACTION TO PREVENT RECURRENCE e

4.

Exhibit G-Instructions for Preparation of Data Entry Sheets for Licensee

" Event Report (

) File (NUREG-0161) e J)

NO.

DATE TYPEl Norte I

1 2

F:

Forced S:

Scheduled UNIT SHUTDOWNS AND POWER REDUCTIONS

..-"{

REPORT MONTH

-DECEMBER, 1987 METHOD* OF DURATION REASON2 SHUTTING (HOURS)

DOWN REACTOR3 Reason:

A-Equipment Failure (Explain)

B~Maintenance o~ Test C-Refueling D....;Regulatory Restriction

  • LICENSEE
  • EVENT REPORT #"

E-Operator Training & License Examination F-Administrative G-Operational Error H-Other (Explain) 3 SYSTEM COMPONENT CODE;4 CODES Method:

!.:.Manual 2-Manual Scram 3-Automatic Scram

  • 4~0ther (E~plain) 4 DOCKET NO *_,,,0-..:5""'0_,-2=-4"-'9'-'------

UNIT NAMEDresden; III DATE January 7, 1988

  • COMPLETED BYD. C. Maxwell

. *TELEPHONE (815) 942..1.2920 CAUSE & CORRECTIVE ACTION TO PREVENT RECURRENCE e

Exhibit G-Instructions for Preparation of Data Entry Sheets for Licensee Event Report (

) File (NUREG-0161)

e e

COMMONWEALTH EDISON COMPANY DRESDEN STATION MAXIMUM DAILY LOAD MONTH OF DECEMBER, 1987 HOUR MAXIMUM DAILY LOAD DAY ENDING KW 1

2400 1, 511, 300 2

0800 1,517,700 3

2400 1,500,500 4

0200 1, 511, 900 5

1900 1,490,400 6

2400 1,540,100 7

0500 1, 581, 600 8

0900 1,574,600 9

1600 1,579,600 10 2200 1,581,300 11 0100 1 578.400 12 2300 1,568,900 13 0100 1,563,400 14 1200 1,535,000 15 1400 1,532,700 16 2100 1,561,600 17 1200 1,584,700 18 1700 1,524,000 19 2100 1,527,100 20 2400 1,491,400 21 0700 1,529,200 22 2100 1,361,400 23 2400 1,543,300 24 0100 1,534,500 25 2400 1,530,800' 26 2400 1,563,500 27 0100 1,564,600 28 2300 1,582,300 29 1500 1,517,300 30 1400 1,579,900 31 2300 1,529,000

AVERAGE DAILY UNIT POWER LEVEL MONTH DECEMBER, 1987 DAY AVERAGE DAILY POWER LEVEL DAY (MWe-Net) 670 17 2

676 18 3

669 19 4

20 5

21 6

6 0 22 7

757 23 8

762 24 9

761 25 10 7.43 26 11 720 27 12 745 28 13 689 29 14 705 30 15 680 31 16 688 DOCKET NO.

050-237 UN IT II DATE January 7, 1988 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 AVERAGE DAILY POWER LEVEL (MWe-Net) 717 713 705 701 436 621 390 617 676 692 757 712 727 702

e e)

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-249 UNIT III DATE January 7, 1988 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 MONTH DECEMBER 2 1987 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DA I LY POWER LEVEL (MWe-Net)

(MWe-Net) 757 17 713

/

18 2

763 734 3

666 19 722 4

764 20 556 5

747 21 738 6

729 22 697 7

761 23 710 8

572 24 689 9

708 25 685 10 754 26 702 11 574 27 742 12 709 28 718 13 736 29 684 14 742 30 704 15

. 730 31 724 16 764

EQUIPMENT S0-2-2499-:4B S0-2-2499-3B I S0-2-2499-2A

-S0-2-2499-l B 2-203-lC

l 'C' MSIV 02 203-lC MSIV 2-203-1-B MS!V 2-203-1-A MSIV 2-302-l 9AE.B BACK UP SCRAM VALVES 2-l50l-25A LPCI TESTABLE CHECK VALVE NATURE OF MAINTENANCE PREVENTIVE WR 042570 PREVENTIVE WR 042571 PKEVElllTIVE WR 042572 PREVENTIVE WR D42574 PREVENTIVE WR D50507 CORRECTIVE WR D53263 CORRECTIVE WR D53264 CORRECTIVE WR 1)53265 PREVENTIVE WR 053849 PREVENTIVE WR 054508 DRESDEN UNI r SAF[TY RELAfEO MA!NTENA'llCf

.LER OK OUTAGE NUMBER MALFUNCTION CAUSE RESULT N/A N/A

!</A N/A N/A N/A

.\\j/ A N/A N/A N/A CO~KECTIVF. ACTION GROUl\\lll OUT A'JO INSTALLEn TACK WELDS PER PROCf.llURE GROUND OtJT ANO PISTALLEO HCK WELDS PFR PROCF.D~JRE GRfJUNO OIJT,\\NO INSTALLED TAC!<'. 'tlELDS PER PROCEOURF' GROUND OUT ANO

! l*JS TALL ED TACK WELDS PROC EOUR~

PER REBUILT AIR AND fl IL CYLINDER, I NSP~C HO ALL PART<;, LEFT OK INSTALLED

!\\lf~W '\\I 'IJG S I) F PACKING, il.EllU!LT PILOT VAL VF II 5 Sf: "-!IL Y, LEFT OK INSTALLEL' MEW '{I MGS OF PACKING, REBUILT PILOT VALVE ASSf:'-FlL y, RE 'lU IL T AIR OPERATOR PFR Pi<'.!JCEDURES, ALL OK NOW REPACKEC Vl\\L vr-, R['\\IJ IL T A !R CYCL TMOl'R, REBUILT VALVE AS<;f'll)LY ALL PER PROC EflllRE REBUILT VllLVC

iO 7-I 'l 'I REPLACED V ~L VE >02-I 'IA, LEFT nK REPLACEO IJOTH L l Ml TS FROM NEW LI "llT ASSEMBLY, 11'.>EU NEw LUGS, LEFT OK r
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EQUIPMENT MOV l 30l-3 MOV l50l-llB

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I 2-203-3A "E" ELECTROMATIC 2-203-30

  • o* ELECTROMATIC 2-bbOO DIESEL GENERATOR 2A-l503 LPCI HEAT EXCHANGER SUPPRESSION CHAMBER

. 2-2301-20 HPCl SUCTION CHECK VALVE NATURE OF "AINTENANCE PREVENT !VE WR 0569l3 PREVENT !VE WR 056923 PREVENTIVE WR 056925 PREVENT!VF.

WR 056929 PREVENTIVE WR 057096 PREVENTIVE WR 057097 PREVENTIVE WR 057448 CORRECTIVE WR 059013 PREVENTIVE WR 059577 CORRECTIVE WR D60l7l uRESOEN U"JIT ?

SAFETY RELATED MAINTENANCE LER OR OUTAGE NUMtiER N/A NIA N/A N/A N/A N/A NIA N/A N/A IJ/A MALFUNC TIO'-!

CAUSE RESULT CORMECT!Vf ACTION O!SCONNECIFO AND RF.CONNECTED MOV AND PERFORMED f.(j. SU'-:VE!LLANCF. PER PROCEOURf:

DISCONNECT£0 ANO RECONNECTED MDV ANO PERFORMED E*J* SURVEILLANCE PER PROCEDIJRi=

OISCONNEClfO 111110 RfC~NNECTED Mnv ANO PERFORMED F.O. SURVEILLANCE PER PROC"?OURf.

OISCONNECTF.0 A~O ~FCONNECTF.O MUV ANO PERFORMED F.0. SURVEILLANCE PER PROCEDURE PERFORMED

~.(). SURVEILLANCF PfR PROCEDURE PERFORMEn E.o.

SU~VF.ILLANCF. PER PROC EDUAF INSPECTED lltl.O T!GtiTFNf'fJ TERMINATIONS U:FT OK PLUGGED 4l fUt'.ES AS REQUESTED FOR TEST ING PERFORMED SURF~CE PPFPARATION AND COATING rr. U? TORU'> PER PROCEDURE INSTALLfn '";:" p.IJSlll'"G<:;, LF.FT OK J

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EQUIPMENT LINE 2-0202-A&B 28"A 2-M0-1001-lB SHUTDOWN COOLING suer ION CU2-0305-126 ACCUM 36-15 EASTS!OE IK41

  • *cuz-303-121 AC CUM 56-39 EASTS !OE AC CUM 46-55 CRD C-10 2-24028 DRYWELL H2 MONITOR 0305-127 CRO A CC UM :: 10-35 WESTBAlllK 2-l501-44A ccsw PUMP A 2-1501-446 ccsw PUMP B VALVE NATURE OF MAINTENANCE PREVENTIVE WR D60751 PREVENTIVE WR 061508 PREVEMTIVE WR 062050 PREVENTIVE wR D62056 CORRECTIVE WR 062547 CORRECT !VE WR 064076 PllEVENT!VE WR 004276 CORRECT IVf WR rJ64 7l l PREVENT I VF.

WR D65033 Pll.EVEMT!VE WR 065034 DRESDC:N UNIT 2 SAFETY qELATED

~A!NTENANCE Ll:R OR OUT AGF.

MALFHNCTION NUMBER CAUSE RF.SULT N/A N/ A N/A NIA M/A N/A N/A N/A M/A N/A CUAMECT!VE ACTION REWORKED HLIND FLANGES TO PREVENT LEAKAGE R EPL AC f-0 TRMJSFORM[R, CHANGED OUT TOROUE 5',/ ITCH, GC:.\\REO Ll'1!T SWITCH, SWITCH /I<; '.>EMAL Y A 'JO SW! TCH CARTRIDGE, PERFORMt:'l PRrJCEOURf, LEFT OK ADJUSH:D PAC'<ING ro <;TOP LEAKAGE ADJUSTED PACK PIG T 1.J STOP LEAKAGE RE PL AC F.D o\\((IJM PFR PROCf.l)URf':. LEFT QI(

INSTALUol) "'Jf w (RO P[q PROCEOUl<E ANO RE!NSTALLl:D <;H:)O"!" i"JUT STEEL, LEFT OK SPLICED ll fllR TO r r ELD MOT:JR CONNECTIONS, L[FT OK INSTALLED 01 /\\PHP.AGM AND STROKED VALVE',

REPL AC EO GASK.F.T~, '.;EAT RING, Sf AT DI SC RING H:D ll l SC R(Th!NER CUT ANO

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~L l GN~*.r:111 r BLOCKS TU '.**I LF Ai'J/: POSIT!QtJEO ANO Wf:LDEO OLOC KS r~ i>L AC (

pi_: f< PROCEDURE I-f* \\..

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EQUIPMENT 2-1501-44C CCSW PUMP 2-1501-440 CCSW PUMP 2-6601 CIESEL GENERA TOR 2-5202 CIESEL GENERATOR OAYTANK SIGHT GLASS 302-107 ACCUM 58-39 2-1499-14 ECCS JOCKEY PUMP 152-2427 LPCI PUMP OREAKER SUCTION PIPE ON U2 0/G SOAKBACK PUMP 2202-5 INSTRUMENT RACK DRAIN HEADER

-M-3214-17 PIPE SUPPORT NATURE OF MAINTENANCE PREVENTIVE WR 065035 PREVENTIVE wo. 065036 PREVEl',JTIVE WR 065880 CORRECTIVE WR ()66190 CORRECTIVF.

WR Qb62 7.3 CORRECTIVE WR 066291 PREVENTIVE WP. 0664 'f4 CORR EC T!VE WR 067124 CORRECT I VF.

WR 067305 CORRECTIVE WR 067476 t)HF.<.OF.N UNI r z SAF[TY RELATED MAINllM~N(F LER OR OUTAGE NUMf.\\ER NI A N/A N/A N/A N/A N/A N/A N/A N/A N/A

."IALFUNCTION CAUSE RESULT CORRfCT!VE ACTION CUT ANO

~A(HINFD A fA. MOTOR ALIGNMENT BLOCKS TD

~IZE AND UQS!TTONEO AND WELD[D RLOCKS lN PLACE D(P PROCEDURE CUT ANO MACHINED 8 EA. MOTOR ALIGNEHENT BLOCKS HI Sl!F ANP POSITIONED ANO WELDED BLOCKS l ~l PL.\\(f: PEP PROCf'.OURE COMPLETED !NSPECT!nNs AND TESTING PER PROCEDURc REPLACED SlGHT GLASS ANO TOP ANO BOTTOM RINGS, U'.FT 0K REPLl\\C(O M!S<;l'~C IL\\"IOWHEF.L ON URA!N VALVE REMOVED CUV~R~ CLFAMED ANO INSPECTED lNTERNALS, GRlr

~LASTEO COVER ANO REINST-LLEO, LEFT OK REPLllCEO U'lTlt M!C'W SWITCHES lll~D TESTED, (HECKE() flK C-L EA NED AN n S f *\\ L p: P I PE PL IJ (, S AN 0 TIGHTENED IJl*ltJ!*!, Lf:FT OK INSTALLED Nf~ NEFOLE VALVE, LEFT UK TIGHTENf;) LtJnsr

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(.RO 0302-22-47 2-220-102 REACTOR WATER SAMPLE ROOT VALVE 2-2301-4 HPCI VALVE 2-230l-l HPCI ORAI~ POT TRAP FOR 3-VALVE 230l-3l AND 239?-56 Ul\\llON CONNECT ION HPCI 2-230l-3l VALVE UNION I E-DG-034 SBGTS PIPE RESTRAINT r-:AfURE Uf MA !MTl:NANCf' CORPECTIVE WR f167564 PREVENT I VF.

WR 067782 PREVENTIVE WR 0682'!0 CORRECTIVE WR,,0683l3 CORREC T!VE WR 068324 CORRECTIVE WR 1)6fl333 CORRECTillF.

WR 06842:'>

CllRP.ECTION WR 00142',:

cnRREC TIVE WR 0684'59 CORRECTIVE WR 068543 llHl",l)IN UNll i

  • , 1\\ I I I Y 111" LA I Hl MA 11~ I I *111 *~(, r Ll::P 01~ our AGJ' NUM~~ ER "IALHJN( I !ON CAUSF RESULT NIA NIA l~I A NI A N/A N/4 N/4 NIA CCRRF.CT!V~ ACTION INSfALLfD NEW VALVF ASSE~BLY AND Q,ELATEO PIPE F!fT!NGS PER PROCEDURE REINSTALLE0 PU~H PUTTON ROX INTO W~LL ANCHORMAN, LFFT OK REPLACED COIL ANO TEST~O RELAY FOR

'coNT!NUITY. ALL OK REPLACED HAND~MfEL. LEFT OK ADJUSTE!J i>tiCKl:O TO STOP LEAKAGF ADJUSTED PACKING 10 STOP LEAKA~E REMOVED f.i1Vf,<l. a*w INSPECTED. INST.:.LLF.D NEW GASKFT, RFINS*ALLF.J COVER, LEFT OK PERFORMED su.L Wf:'LLl i)N UNION PER PROCEOURr SEAL WELil:rl UlO~! Pt:r<

PROCEOLJHE REMOVED Hd' IMSl'ALLl;f) f'IP('

~ESTRAINT, LEFT OK

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I EQUIPMENT 2-6601 DIESEL GENERATOR REACTOR TRACKWAY DOOR REACTOR FEEOWATER X-AREA PENETRATION BOOTH 20 MSLV X-AREA PENETRATION BOOTH 2C MSLV X-AREA PENETRATION BOOTH SUPPORT M-3214-09 SUPPORT M-3214-36 SNUBBER UL522 STROKE TEST SNUBBER

~1524 STROKE TEST SNUBBER Ul529 STROKE TES~

NATURE OF MAINTENAtlCE l'REVENTIVE WR 068951 CORRECTIVE WR 069012 CORRECTIVF.

WR 069057 Cl)RP.EC TI VE WR 06'l05fJ CORR EC TIVF.

~IP. 069059

,CORRECT !VE WP. 069097 CORRECTIVE WR 069098 PREVENTIVE WR lJf-9145 PREVENTIVE WR_ 069 14 7 PREVf.NTIVE WR 009148

!)RESOEN UNIT 2 SAF~TY RELATED MAINTENA~CE.

LER OR. OIJTAG[:

MALFUNCTION NUMBER CAUSF.

RFSULT N/A N/A

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IJ/ A f.J/A N/A N/A N/A N/A CURRECTlVE ACTION PF.RFORMEO QUART~RLY TNSPFCT!JN*PF.R PROCEOUR~

ADJUSTED CLAMPS UN DOOR AND (AULKEO TO STOP AIR lf/,~AC",[

TEMf'O~Af1.ll.Y Rl'Pl\\J::tf;) SF.AL LEAK UNTIL PERMANENT

~EP4!P. CA~ ~E DONE SEALED Hnt.ES IN

~nnT WlfH RTV ANO GLASS CLOTH, LU' r 01<

SEALED HOLf~ I~ ~uors WITH GLASS CLOTH ANO RTV, LEFf OK TORQUED

~LL AN(HUR [l(ILTS, LEl'f llK TIGHTENfD LllilSF NllTS, LEFT f)t<

RE"IOVEO At;') P1')T/ILLfO PIN FOR TESTlNG LEFT OK RE"IOVEO A~J l~~TAl.LFn PIN FOR TESTING LF.FT OK REMOVE[)

Ar-ifl l~iSTAl.Lt'D.PIN FOR Tt:ST !rJG, LEFT OK

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I EQUIPMENT SNUBBER

~1530 STROKE TEST SNUBBER =t528 STROKE TEST SNUBRER

~1526 STROKE TEST SNUBBER =t52l STROKE TEST SNUBBER =1527 STROKE TEST l'!-3213-17 PIPE HANGER 1501 LINE 0-2C LPCI MIN FLOW LINE 2C-l50l-44 CCSW PUMP U2 D/W PERSONNEL INTERLOCK NATURE (IF MAINTENANCE PflEVENT!VE

  • WR D69 l't9 PREVENTIVO:

WR 069150 PREVENT I VF.

WR Do9!5l PREVENTTVE WR D69l52 PREVEIH!VE WR Do9154 CORRECTIVE WR 069203 CORRECTIVE WR 069366 CORRECT IVE wR 069715 PREVENT IVE WR 0691l3':l IW.fSDl:N UNIT i

'.;/If I ! Y KF.l /I leD MA INTI N.\\~IC" L[R OR OUHGE NUMflER "1/ILFIJN( TI ON CAUSE KE SULT N/A N/A N/A 1'./A N/A N/A N/A N/A N/A CO~R~CTIVE ACTION RE"IOVED Ar. 1)

!NS T AL LEO PIN FOR TEST I Nr.,

LEFT OK REMOVE~ INn IN~IALLED PIN FOR TESTING, LEFT OK REMOVED AN~ IN~TALLED PIN FOR TESTING, LEFT OK REMOVED 11 1ir; JM';l.ILLEO PIN FOR TESTING, LE FT OK REMOVED AN() ll*1S!At.Lt!l PIN FOil. TESTHJG, LEFT OK APPL I ED LUC Tl I~ f')

TH1~Er.OS AND T IGtHf:NEC Y~'IG.':R !.JUT, LEFT' OK

!NSTALLtD STlJD~ MJD lllUTS r.rrn T!GYTENEO, LEFT OK ADJUSTED PACKTNG, LEFT OK INSTALLEn St'fWNC~IM:K ON 0/W PEPSQN'i[L

!NffLOCt< n111w

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CORRECT IVE WR Db6660 CORRECTIVE WR Ob'l6l7 Oll.ESDEN UNIT.U:I SAFETY RELATED "IAINT(NANCE LER O~ OUHGE NUMOER N/A N/A "IALFUNC TI mi CAUSE RESULT CORRECTIVE ACTION REBUILT 6 O!ESEL AIR START MOTORS PER PROCEDURE AND T[STEO. ALL OK CHANGED nuT VALVf. LEFT OK r

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EQUIPMENT 003-0201-020-015 I CONTROL ROO DRIVES 3-261-306

INST. ISOLATION VALVE MO VALVE 3-1501-3A

--3-2'301-48*

LOCAL C/S ANO INDICATOR U3 HPCI BOOSTER PUMP OUTBOARD

- --- BEAR I NG COVER - -

  • 0 D* LPCI PUMP SUCTION VALVE MO 3-1501-50 INNER BOLTED DOOR OF ~3 MATERIAL INTERLOCK APRM CH. 3 HI AND ROD OUT BLOCK ALARM t

2/3-6600 DIESEL GENERATOR.

-- ---Ao3*-t60t-20B

SAFffV RELATED MAINTENANCE LER OR OUTAGE NUMBER MALFU~;c r 10fl4 CAUSE Kf.SULT N/A N/A NIA NIA N/A N/A NIA N/A NIA NI A CORKECTIVE ACTION REBUILD CU~TROL RUO DRIVES PER PROC EOURE CLEANED GASKFT AREA. INSTALLED NEW STEM.

DISC ANO onNNET GASKF.T, Lf.FT OK REPLACED UULJS. LEFf QK REPLACED OPEN ANO CLOSED LIGHT SOCKETS CLEANED GASKET AREA, REPLACED GASKET ANO END COVER, LEFT OK REPLACED HAN~WHEEL COVER PER PROCEDURE REPAIRED THE INTERLOCK enLTEO DOOR PER PROCEDURE, LEfT OK CHECKED ALARM CARO Cl~CUIT* ANO INSPECTED Rf.LAV CONTACTS, FOLINO NO PROBLEMS INSTALLED LONGER STuns TO ESTARLISH FULL NUT fNC,GEMfNT, LEFT OK INSPECTED HOSES, FOUNO NO PROBLEMS j.11

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I EQUIPMENT 3-A0-1601-Zl 3-2301-7 HPC[ TESTABLE CHECK M0-3-1301-3 RELAY*-595-151 1

P'O 3-3702

---RBCCW SUPPLY TO D/W AOV-3-1601-63 *l 201-1 CLE Ailt-UP 3 *a* SBLC PUMP U3 DIESEL GENERATOR GOVERNOR

-*-WE"'DS ON-SMALL BORE P !PE -

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NATURE OF MAINTENANCE CORRECTIVE WR D67819 PREVENTIVE WR 067815 PREVENTIVE WR D67839 PREVENTIVE WR 067840 PREVENTIVE WR 0*67933 CORRECTIVE WR 06A019 CORR EC Tl VE WR 068115 CORRECTIVE WR D68194 PREVENTIVE wR 06El260 PREVENTIVE WR 068290 D'l.ESDEN UNIT 1 SAFETY

~ELATED MA!NTfNANCE LER OK OUTAGE NUMBER MALFUNCTION CAUSE RESULT N/A N/A N/A N/A N/A N/A NIA N/A N/A N/A CORRF(T!VE ACTION REBUILT AIR OP!=RAflJK PER PROCEDURE OPERATED VALVE MANUALLY TO PROVE OPERABILITY, CHECKED OUT OK VACUUMED AND euRN!SHfO CONTACTS OF SWITCH, !NSPfCTED, LJ=FT OK PERFORMEO'FU~CTlONAL TESTl~G, RELAY AND SWITCH CHECKS OUT OK RE!NSTALLfO THE FXJST!NG SPRING AND INSPECTEO AND CYCLED VALVE, ALL OK NOW GRAOUALLY !NCKEASl:'.1 CLOSE EXHAUST PORT ORIFICE rn PROPER SIZE. CYCLED ANO LEFT OK LUEIRICATEO STF.'1 Ar~ll l\\OJUSTEO PACKING ADJUSTED PACKH1G TO STOP LEAKAGE INSPECTEr ((JNTll.DL SWITClh CLEANED MOTOR COMUTATnP, WORKS PROPERLY NOW

.DRESSEf.l '"1CLC5 Tll t. T TA IN AN ACCEPTABLE FINISH, LU'T 01(

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EQUIPMENT AO 1601-21 OW INERTING ANO PURGE VALVE MOV 2-2301-8

-- *LOCAL OPERATOR PUSHBUTTON M0-3-2301-14 VALVE

---* *-3-2-30*1-10 *VAL VE SECONDARY CONTAINMENT SEAL AROUND *a* MAIN STEAM LlNE 3-1501-440 1 CCSW PUMP OUTBOARO SEAL MOV 3-150l-28A 3-l501-28A LIMITORQUE 3-0301-127 CRO F-8 122-311 SCRAM OUTLET VALVE 3-0303-127 CRO F-8 SCRAM OUTLET NATURE OF MAINTENMlCE PREVENTIVE WR 068368 PREVENTIVE WR 068405 CORRECTIVE WR 068948 PREVENT IV!:

WR D6B954 CORRECTIVE WR 069047 CORRECT !VE WR 069385 PREVENTIVE WP. [)693A9 CORRECT !VE wR n69462 CORRECTIVE WP 069544 CORRECTIVE WR 069757 ORESOE:ll UNIT 1 SAFETY RELATED MAINTENANCE LER rlR OUTAGE' NIJMBER N/A N/A N/A N/A N/A N/A M/A N/A N/A NIA

'1ALFIJ~JC T ION CAUSE RESULT CORRECTIVE ACTION REALIGNEU LIMIT TU PROPER POSITION AND CYCLED, LfFT OK REPLACEU C~MPLETE LOCAL PUSH BUTTON VALVE cnNTROL STATION, LEFT OK REPLACED ALL W0RM, CORRODED AND ERODED PARTS, LFFT rJK CLEANED ARE* ANO INSTALLED NEW GASKET, LEFT OK WRAPPED <;J*AM Ll!IE WITH GLASS CLOTH AND CLAMPED nnTH L:llOS TIGHTEN(()

PA(KIN~ ra STOP LEAKAGE REMOVED AMO lNSfhLLEO COVER FOR NRC INSPECTl8N, LEFT OK CUT BRA<,<; noo ANO lNSTALLEO IN ENO OF STEM, LEFT OK REPLACF.O SCRAM 01.ITLET VALVE 01APHRAG'1 O[O <'tll)(!'IJU>l.E I\\ IR T !GHTENEll >-I TT n:r.s TO STOP LE AK AGE

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I EQUIPMENT CRD 02-27 A-7 NATURE OF MAINTENANCE CORR EC TlVE WR 009795 DRESDEN UNIT °'

5AF[TY RELATED

~A!NTfNANCE LER*OR OUTAGE NIJM'.lER MALFUNCTION CAUSE RESULT N/A CORRECTIVE ACTION REMOVED MI Pl-'LE, I ~jSPECTEO ANO REINSTALLED >HPP!.E

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UNIQUE REPORTING REQUIREMENTS MAIN STEAM RELIEF VALVE OPERATIONS Relief valve operations during the reporting period December, 1987 are summarized in the following table.

The table includes information as to which relief valve was actuated, how it was actuated, and the circum-stances resulting in its actuation.

Valves Description Unit Date Actuated Actuations Conditions. of Events 2

12/01/87 to 12/31/87 None 3

~12/01/87 to 12/31/87 None

ODCM Reporting Reqµirements

/

DECEMBER, 1987:

None

12/01/87 to 12/31/87

SUMMARY

OF OPERATING EXPERIENCE DRESDEN UNIT TWO DECEMBER, 1987 Unit 2 entered the morith on-line and operating in Economic Generation Control (EGC) at 685 MWe.

On Decembe'r 21 and December 24, 1987, load was reduced to approximately 300 MWe and primary containment entries were mad~ iri order to repair air leaks in the drywell pneumatic system.

Load was increased follow-ing completion of these repairs.

The unit operated the entire month limited by turbine loading limita-tions due to the 2D2 feedwater heater being isolated.

Also the unit operated in EGC at reduced loads as directed by the Load Dispatcher with a capacity factor of 84.5% and an availability of 100.0%.

12/01/87 to 12/31/87

SUMMARY

OF OPERATING EXPERIENCE DRESDEN UNIT THREE DECEMBER, 1987 Unit 3 entered the. month on-line and operating at 785 MWe, limited by turbine loading limitations due to the 3Dl feedwater heater being isolated.

The unit operated the entire month limited by the turbine loading limitations.

Also, the unit operated on EGG at reduced load as directed by the Load Dispatcher with a capacity factor of 88.9% and an availability of 100.0%.

CommonliAlth Edison Dresden NuciW Power Station R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 January 7, 1988 EDE LTR:

88-014 Director, Office of Inspection and Enforcement United States Nuclear Regulatory Commission Washington, DC 20555 Attention:

Document Control Desk

Dear Sir:

Enclosed, please find Dresden Station's operating data for the month of December, 1987.

This information is supplied to your office per the instructions set forth in Regulatory Guide 1.16.

Sincerely, Station er Dresden Nuclear Power Station EDE:DCM:hjb Enclosure cc:

Region III, Regulatory Operations, U.S. NRC Chief, Division Nuclear Safety, State of IL U.S. NRC, Document Management Branch Nuclear Licensing Administrator Nuc. Sta. Div. Vice Pres.

Manager, Tech. Serv. Nuc. Sta.

Tech Staff A.E. (2)

On-Site NRC Inspector Site Q.A.

Station Nuc. Eng. Dept.

Comptroller's Office PIP Coordinator INPO Records Center File/NRC Op. Data File/Numerical

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