Text

Monthly Operating Repts for Sept 1986
	ML20211B273
Person / Time
Site:	Dresden
Issue date:	09/30/1986
From:	Eenigenburg E, Maxwell D; COMMONWEALTH EDISON CO.
To:	; NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
	86-080, 86-80, NUDOCS 8610170172
	Download: ML20211B273 (29)
	v • d • e

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OPERATING DATA REPORT

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DOCKET NO. 050-237 DATE Oct. 1, 1986 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 OPERATING STATUS NOTES

1. Unit Name: Dresden II Unit forced outage rate

2. Reporting Period: Sentember. 1986 reflects corrections in 3 Licensed Thermal Power (MWt): 2 527 year-to-date and cumulative

4. Nameplate Rating (Gross MWe): 828 columns because the May thru

! 5 Design Electrical Rating (Net MWe): 794 June outage was scheduled,

6. Maximum Dependable Capacity (Gross MWe): 812 rather than forced.

7 Maximum Dependable Capacity (Net MWe): 772

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

N/A 9 Power Level to Which Restricted, if Any (Net MVe): N/A

10. Reasons For Restrictions', if Any: N/A 4

This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 720 6,551 143,615 ,

12. Number of Hours Reactor Was Critical 674.7 5.676.0 109.373.5' 13 Reactor Reserve Shutdown Hours 0 0 0 i

14. Hours Generator On-Line 643.0 5.337.1 -104.321.6 15 Unit Reserve Shutdown Hours 0 0 0 l 16. Gross Thermal Energy Generated (MWH) 1.379.438 12.316.590 213.950.229

17 Gross Electrical Energy Generated (MWH) 429.861 3.968.041 68.467.804 i 18. Net Electrical Energy Generated.(MWH) 406.520 3.771.635 64.707.749 l 19 Unit Service Factor _

89.3 81.5 72.6 l

20. Unit Availability Factor 89.3 81.5 72.6 i 21. Unit Capacity Factor (Using MDC Net) 73.1 74.6 58.4

22. Unit Capacity Factor (Using DER Net) 71.1 72.5 56.7 23 Unit Forced Outage Rate 10.7 10.1 12.2

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

l Refueling outage scheduled for December, 1986 through February, 1987.

25 If Shut Down At End Of Report Period, Estimated Date of Startup: N/A l_

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._.-8610170172 ADOCK860930 05000237; l PDR

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OPERATING DATA REPORT DOCKET NO. 050-249 DATE Oct. 1, 1986 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 OPERATING STATUS NOTES

1. Unit Name: Dresden III

2. Reporting Period: September. 1986 j 3 Licensed Thermal Power (MWt): 2.527 I

4. Nameplate Rating (Gross MWe): R2R 5 Design Electrical Rating (Net MWe): 794

6. Maximum Dependable Capacity (Gross MWe): R12 7 Maximum Dependable Capacity (Net MWe): 773

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

N/A 9: Power Level to Which Restricted,' If Any (Net MWe): N/A

10. Reasons For Restrictions, if Any: N/A This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 720 6.551 133.200

12. Number of Hours Reactor Was Critical 655.9 760.0 97.356.8

13. . Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On-Line 535.0 535.0 90.328.3 15 Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 816.294 816.294 182.588.930 17 Gross Electrical Energy Generated (MWH) 236.948 236.948 59.076.181

18. Net Electrical Energy Generated.(MWH) 220.609 178.110 55.904.624 19 Unit Service Factor 74.3 8.2 67.8

20. Unit Availability Factor 74.3 8.2 07.8

21. Unit Capacity Factor (Using MDC Net) 39.6 3.5 54.3

22. Unit Capacity Factor (Using DER Net) 38.6 3.4 52.9 23 Unit Forced Outage Rate 24.7 24.7 12.5

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

N/A 25 If Shut Down At End Of Report Period, Estimated Date of Startup: N/A t

COMMONWEALTH EDISON COMPANY DRESDEN STATION MAXIMUM DAILY LOAD MONTH OF SEPTEMBER, 1986 HOUR MAXIMUM DAILY LOAD DAY ENDING KW 1 1500 947,200 2 0100 919,700 3 1200 779,600 4 2100 781,000 5 0400 741,500 6 1200 891,800 7 1900 934.100 1

8 2400 1,167,000 9 1200 1,336,300 10 1200 1,294,900 11 0300 1,204,900 12 1800 1,221,600 13 0700 1,219,600 I

14 2400 1,166,500 15 0800 1,197,600 16 1000 1,181,600 17 0800 454,600 I 0700 450,900 18 19 0100 447,300 20 1900 889,400 21 2400 943,700 22 2400 1,100,100 23 1300 1,179,700 24 1000 1,217,600 25 1500 1,241,400 26 2400 1,241,800 27 0100 1,193,400 28 2300 747,000 29 0100 744,700 30 1800 929,500

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-237 UNIT II DATE Oct. 1, 1936 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920

. MONTH September, 1986 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL

! (MWe-Net) (MWe-Net) j i 774 17 o 2 749 18 o i

3 731 19 o 4 721 20 204 l'

5 723 21 394 6 685 22 587 471 . 649

7 23

8 557 24 621 732 598 9 25 688 624 10 26 11 682 27 614 666 601 12 28 714 702 13' 29 679 14 610 30 15 698 16 579 ,

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4 AVERAGE DAILY UNIT POWER LEVEL i

DOCKET NO. 050-249 UNIT III DATE oct. 1, 1986 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 ,

MONTH September, 1986 4 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 65 17 433 2 10 18 428 3 0 19 417- ___

4 0 20 425 5 0 ,

21 421 6 123 22 419 7 357 23 453 8 446 24 499-557 548 9 25 10 514 26 567-

)) 398 .

27 78 410 gg 0 12 433' 0 29 13 14 427 47 30 427

15 452 16

,_.a-.----------..-e. - - - - - . , - - n, _ . ,. - , - - - . - - . . _ - - - , - - , - - - . - , . . -

DOCKET NO. 050-237 UNIT NAME II UNIT SHUTDOWNS AND POWER REDUCTIONS DATE Oct. 1, 1986 .

4 COMPLETED BY D. C. Maxwell TELEPHONE (81S) 942-2920

, REPORT HONTH September,'1986 .

HETHOD OF LICENSEE NO. DATE' TYPEl DURATION CAUSE & CORRECTIVE REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO (HOURS) DOWN REACTOR 3 REPORT F CODE 4 CODES PREVENT RECURRENCE 8 86-09-17 F 77:02 A 1 - ---

Off-line manually to investi-

. (77.0) gate main condenser differential pressure problem.

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l 1 2 3 4 F: Forced Reason: .

hthod: Exhibit G-Instructions for S: Scheduled A-Equipment Failure (Explain) 1-knual Preparation of Data B-h intenance or Test 2-knual Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scram D-Regulatory, Restriction Event Report ( ) File 4-Other (Explain) (NUREC-0161)

E-Operator Training & License Examination .

F-Administrative i G-Operational Error '

H-Other (Explain)

DOCKET NO. oso_249 UNIT. NAME III UNIT SHUTDOWNS AND POWER REDUCTIONS DATE Oc t . 1, 1986 COMPLETED BY D. C. Maxwell TELEPHONE (815) 942-2920 REPORT MONTH September, 1986 .

METHOD OF LICENSEE CAUSE & CORRECTIVE NO. DATE TYPEl DURATION REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO (HOURS) DOWN REACTOR 3 REPORT F CODE 4 CODE 5 PREVENT RECURRENCE 1 86-09-02 F 64:33 A 2 86-012-0 (64.6) 3B CRD pump auto-trip and manual Rx scram caused by stuck-open CRD M-3 charging '

water valve.

2 86-09-04 F 27:45 A Rx Remained --

High vibration on # 7 turbine (27.8) Critical bearing.

3 86-09-27 F 82:52 A 3 86-016-0 (87.9)

Loss of vacuum in main condenser when flow reversing valve 3-4402-D failed, tripped turbine and hi flux, scrammed reactor.

4 86-09-30 S 0:45 B Rx Remained Planned turbine overspeed test.

(0.8) Critical 1 2 3 4 F: Forced Reason:

Method: Exhibit G-Instructions for S: Scheduled A-Equipment Failure (Explain) 1-Manual Preparation of Data B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (

D-Regulatory Restriction ) File 4-Other (Explain) (NUREC-0161)

E-Operator Training & License Examination .

F-Administrative i G-Operational Error f

i H-Other (Explain)

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DRESDEN UNI T 2

%, . SAFETY CELATED cal % TEN *.NCE NATURF OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT COARCCTIVE ACTION 2-1201-158 , CORRECT IV E N/A --- - - - - - - -

REPAIRED A STEAM CUT IN THE SE AL RING WR D48666 0F THE 2-1201 -158 CHECK VALVE, INSTALLED NEW STUGS AND NUTS O ,

dt89-7 AND R8M-9 CORRECTIVE N/A --- - - -

PERFORMED PROCEDURE TO CHECK LPRM U ROD D WR D49115 OISPLAY, REPLACED BAD SELECTOR Shi ftM AND PERFORMED PROCEDURE TO ASSURE PROPER CALIBRATION, LEFT OK D KSIV 2-203-2C AIR VALVE BLOCK PREVENTIVE N/A -

REBUILD 2C MSIV PER work INSTRUCTIONS.

WR 0508a0 CYCLEO VALVE 3 TIMES, LEFT OK D D

SPCCE FEED WATER CHECK VALVE CORRECTIVE N/A --- --- - REoUILD CHECK VALVE PER PROCEDURE, 223 WR 053084 TESTED AND EVERYTHING UK D

2-1401-A PREVENTIVE N/A --

REMCVED AND INSTALLED COVER FDA NRC D CORE SPRAY PUMP MOTOR WR 054411 INSPECT 10N O

2TD-301 ESSII PREVENTIVE N/A -- -*- REPAIRED FLEXISLE CONDUIT bY REINSERTihG WR D5483T OUTER COVERING INTO FI TTINC., LEFT OK D D

FT-21542A CORRECTIVE N/A REPL ACED TR ANSMI TTER COVER PLUG PER CONTAINMENT COOLING SERVICE WR 055029 PROCEDURE CHECKED CALISMATION AND FOUNO CATER FLOW TRANSMITTER NO PROBLEM D 5 'J- 3';- 126 PREVENTIVE N/A - - === - FIXED FL ANGE LEAK PER work INSTPUCTIONS D '

CCD SCCAM INLET VALVE WR 055040 1 g 2-44C0 PREVENTIVE N/A PERFORMED 6 MONTH INSPECTION PER DIESEL. GENERATOR WR 055172 PROCEDURE AND 3 MONTH INSP. PER D PR tr.EDURE PERFORMED CALIBR ATION CHECK AND REPLACED D!t FUSE SCO-T25A CORRECTIVE N/A -- --

WR 0555T6 SWITCH, LEFT OK ,

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E ~% SAFETY RELATED M21NTENANCE NATURE OF LER OR OUTAGE MILFUNCTION EQUIPMENT MAINTENANCE NUM8ER CAUSE RESULT CORRECTIVE ACTION ,

2-223-!C PREVENTIVE N/A REPLACED CONTACT PLOCK, OPERATED CSIV 104 TEST SWI TCH NR 055825 SWITCH SEVERAL TIMES WITH NO PROBLEM O ,

i 2-233-1C PREVENTIVE N/A =-- REPL ACED LIMIT 5 WITCH, CYCLEo O CSIV WR D55826 SEVERAL TIMES WITH NO PROBLEM O

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DRESTED UNIT 2/3 SAFETY CELATED MAINTEN'.NCE O

NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 2/3-233 CORRECTIVE N/A -- - --- DISASSEMBLED VALVE AND PILOT AND SPA 2E ELECTROMATIC WR 044020 INSPECTED ANO NEW DISC WAS REQUIRED FOR PILDT,RE ASSEMBLED AND TESTED, LEFT OK ,

O'

/ O, 2/3-6601 CORRECTIVE N/A = =- - - - - - - - PERFORMED 5 YR. INSPECTION PER DIESEL GENERATOR WR 051618 PROC EDURE, REPL ACE 0 ALL O-RINGS, LEFT OK

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O 2/3 OIESEL GENERATOR PRE VEN TI VE N/A -~ --- INSPECTED CHECK VALVE, FOUND NO WR 051814 PROBLEMS, INSPECTED AND CLEANED LUBE O OIL STRAINER O

2/3-MA1 CORRECTIVE N/A -- =- REMOVED OLD OIL SCAVENGING AND FUEL OIL EMEIGENCY DIESEL GENERATOR WR D53156 TVT ASSEMdLY AND REPLACED WITH NEW Aiu MBLY, LEFT OK O OIESEL GENERATOR PSCVMTIVE N/A - - =-- -- CHANGED TURBO CH AR GE FILER, SOAK BACK I WR 053208 OIL FILTER AND 7 LUBE OIL FILTERS, ,

PERFORMED 3 MONTH INSPECTION PER I PROCEDURE, LEFT OK Ii 2 /3-tM1 CORRECTIVE N/A - - - - - - -- REPLACED PRESSURE CAP, LEF T AND RIGHT O!ESEL GENERATOR WR 053681 WATER PUMP S, O R INGS A.,3 THERMDSTATIC 9. '

ELEMENTS WITH NEW ONES, LEFT OK D!

02 (CCUM. SPARE CORRECTIVE N/A ----- --- REBUIL T CRO ACCUMUL ATOR PER PR OC EDUR h li WR D53935 LEFT OK 9

l 2/3 250V DC BATTERY CHARGER CORRECTIVE N/A -- -

REPLACED BAD LOW YOLTAGE SENSING BOAdo O!

WR 055995 AND ADJUSTED CHARGER SETTINGS PER PROCEDURE, LEFT OK T. g, -

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ORESOEN UNIT 3 a' St.FETY RELMED M AINTENANC E NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUM8ER CAUSE RESULT CORRECTIVE ACTION O

N/A ~ ~ - -- ----

O ,

U-3 CPS LOGIC PREVENTIVE N/A -- ---- ---- REBUILT RELAYS PER PROCEDURE, LEFT OK O WR D35661 SLAVES 1-78 O

MCC 30-7 PREVENTIVE N/A --

INST ALLED 2 POLE FUSE eLOCKS AND FUSES MOTOR CONTROL CENTER 480V WR D36628 PER m0RK INSTRUC TIONS, L EF T OK O O

MCC 33-7 PREVENTIVE N/A - - - - - - - - -- -

COMPLE TED E.Q. WORK PER WORK MOTOR CONTROL CENTER 480V WR D36630 INSTRUCTIONS O

CORE SPRAY SYSTEM LOGIC CORRECTIVE N/A ---

REBUILT RELAYS PER PROCEDURES AND O WR D36725 REPLACED MAGNETIC COIL ASSEMSLY SLAVES 1-26 0'LPRM 24-49A PREVENTIVE N/A '

REPL ACED SELECTOR SWITCH 53 FOR APRM AND WR 037136 VERIFIED PROPER Sd!TCH OPERATION PER OI PROCEDURE, LEFT OK '

S MAIN STEAM ISOL ATING CONTROL PREVENTIVE N/A --- ---

REPLACEO RELAYS AND C ALIBRATED PER '

WR 037746 PROCEDURE, LEFT OK 3-1601-21 CORRECTIVE N/A ---- -- -

WELDED BLOCKS, R EPL ACED 000Y TO BONNET I PRATT CUTTERFLY WR D39290 BOLTS AND ADAPTER CAPSCREWS WITH NEW GRADE 8, RETORQUEO, LOCKTITED, STAKED

' AND COUNTER-SUNK BOLTS, LEFT OK I 24/4C7 BATTERIES PREVENTIVE N/A --------- ---------

ASSIST TECH STAFF IN TEST UF 24/48 VOC WR D43032 BATTERIE S, LEF T OK I; I.

MOV 1501-278 PREVENTIVE N/A --- ---------

COMPLE TED E.Q. INSPELTION PER h0RK j WR D43434 INSTRUCTIONS .

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DRESDEN UNIT 3 l i

SAFETY CELATED MAINTENANCE O

NATURE OF LER OR OUTAGE MILFUNCTIDN EDUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION .

O!

D-3 VENT LINES AND RX HD CORRECTIVE N/A =-- -- - REPLACED REACTOR HEAD INSULATION PER ,

WR 044030 PROCEOURE, REPLACED GASKETS AND CLEANED I%SULAT10N O ALL FLANGES, INSPECTED ALL AND LEFT OK 3-1105A CORRECTIVE N/A - - - - REMOVED AND TE STED V ALVE PER PROCEDURE O' WR 044085 REPL ACED SE AT DISC AND L APPED, LEFT OK

$8LC RELIEF VALVE A O

I WEST TORUS HATCH CORRECTIVE N/A ---- == --------- CidANE0 AND INSTALLE0 NEd 0-RINGS AND O

WR D44111 INST ALLED NFW STUDS, LEFT OK O

3-1301-1 PREVENTIVE N/A ==--- INSTALLE0 GREASE RELIEF AND REMOVEJ ,

MOV WR 044567 PLASTIC CAP FROM RELIEF VALVE,LEFT OK O

F;0V 1204-1 PREVENTIVE N/A INSTALLED RELIEF VALVE TO CORRECT O WR D445T8 E.Q. DEF ICIENC IE S, LEF T OK O i i

I U3 TIPSHEAR VALVES PREVENTIVE N/A ==--- -==--- REPL ACED TIP SHEAR VALVES PER W P. D45889 PROC EDURE, L EF T OK O' O;

CEACTDR VESSEL HEAD PREVENTIVE N/A --------- --- CLEANED FLANGE ARFA, INSTALLED WENT WR D45951 SYSTEM. LEFT OK O

REACTDR VESSEL SHIELD PREVENTIVE N/A ----

INST ALLED RING GIROER AND FUEL PAD CD '

WR D45953 SHIE LD PLUGS, LEFT OK i

' O; 3-1501-44A CORRECTIVE N/A ------ ==- - - - - - RE6UILT PUMP USING NEW SLEEVES, 8 EARING D-3A CCSW PUMP WR D46639 AND OIL SE ALS, G ASKET, SHAFT SLEEVE NUTS O(

REPL ACKED PUMP COUPLING, LEFT OK t .

I Ol 3-M 08*,-6 PREVENTIVE N/A - - - - - - - - ---= REMOVED AND INST ALLED SNUBtSER FOR l FUNCTIONAL TEST SNUL;E3 ISCRAM DISCHARGEl WR D4TO99 O

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DRESDEN UNIT 3

, SAFE TY CELT.TED M AINTENI.NC E i

NATURE OF LER 02 OUTAGE COLFUNCTION '

EQUIPMENT MAINTENANCE NUF8ER CAUSC RESULT CORREC TIVE ACTION 0

3-1601- 32 E , 32F, 33E PREVENTIVE N/A ------ -

REMOVED OISC S AND COVERS FROM VACUUM, TORUS TO O.W. VACUUM BREAKERS WR D47184 1NSPEC TED AND RE ASSEMBLED. LEFT OK TORUS AND ISOL A TION CONDENSER PREVENTIVE N/A ----- --------- TORUS WAS 3LA$iED AND REC 0ATED, LEFT OK O WR D47416 O

O-3 15DI-22A CORRECTIVE N/A -

-- = - - -

CHANGED OUT ALL OLD GREASE OF LIMITDAQUE WR 048551 AND REPLACEO GASKETS , QUAD RINGS AND O SE AL S O

D-3 MD-1501-228 CORRECTIVE N/A ------ - --- REPAIRED BROKEN BEARING AND HAN0 WHEEL, WR 048552 INST ALLED NEW GASKETS, QUAD RINGS, SEALS AND 0 RINGS IN LIMITORQUE. INSTALLEo O MOBILUX GREASE, LEFT OK 3-1231-1A CORRECTIVE N/A ---- --- ---= OISASSEMBLED LIMITORQUE, CLEANED ALL O WR 048557 OLD PARTS AND REASSEMBLED USING NFJ GASKETS, QUAD RINGS AND MOBILUX GREASE, LEFT OK O}

COIXI AL CABLE ST506T C 75082 PREVENTIVE N/A ---

INST ALLFD NEW COAX CONNECTORS PER d')RK WR 048565 INSTRUCTIONS, LEFT OK O, O

IR;; [2 CORRECTIVE N/A - - - - - - - -- -

REPLACED BROKEN CONNECTOR ON CABLE AT I WR D48659 DETECTOR, CHECKE D PER PROCEDURE, LEF T OK O

3-1141 CCD CORRECTIVE N/A ---------

REMOVED CD/ERS ANO VALVE DISC PER O '

TORUS TO D.W. VACUUM BREAKERS WR D48711 PR OC EDUR E , INSTALLED DISCS WITH NE W RUBBER SEATS AND INSTALLED COVERS, LEFT i

OK O; 3-220-58A CORRECTIVE N/A

- - - - - - - - - - - - =

INSTALLED SEAT C DISC ASSEMBLY USING WR 048730 PROCEDURE, CLEANED 0 RING SE ATING SURF ACE O AND PRESSURE SEAL RING AREAS, LEFT OK D

SNUBBE3 21402 CORRECTIVE N/A --- RE AL IGNED PIFE CL AMP, LEFT OK WR 048750 {

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DRESDEN UNIT 3 i

, SAFETY RELATED r3INTENENCE O,

NATURE OF LER 03 CUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION O,

SNUBBE3 31504 CORRECTIVE N/A --------- -

MOVED BEARING ON END OF SNUBdER SACK IN WR D48751 PLACE AND STAKED PIN ON PROPER LOCATION, LEFT OK O I

SNUBBER 350 C 51 CORRECTIVE N/A - - - - - - - - ==- --- REINSTALLEO AND STAKED BEARINGS ON O; WR D48T52 50 AND 51 SNU838E RS, LEFT OK D

BUS TIE 34-1 TO 34 PREVENTIVE N/A ---- --

TAPED TWO L AYEks OF 130C AND ONE LAVER WR 048T91 0F 33T PER E.Q. INSTRUCTIONS, LEFT OK D O

CORE SPRAY DISCHARGE VALVE CORRECTIVE N/A --------- -- - === OISA SSEMBLED LIMITORQUE, CLE ANED ALL OLD 3-1402-244 WR 048917 GREASE OUT AND INSTALLED NEW GASKETS, QUAD RINGS AND GREASED WITH MOBILUX, O REASSEMBLE 3 LIMITORQUE, LEFT OK 3-1301-2 CORRECTIVE N/A - - - - - - - -- REMOVED LIMITORQUE, CLEANEO AND I ,

INSPECTED ALL PARTS, REASSEM3 LED USING '

ISOLATION CONDENSER SUPPLY WR 048918 '

viLVE #2 ISOLATION NEd QUAD RINGS, GASKETS AND 0 RINGS, !

INSTALLED MOBILUX GREASE, LEFT OK 9 3-205-2-4 CORRECTIVE N/A - --- ---- DISASSEMBLED L IMITORQUE, RE ASSEMBLED HEAD SPRAY VALVE WR 048921 USING NEW QUAD RINGS AND GASKETS, O' CLE ANED OUT ALL OLD GRE ASE, LEFT OK !

I:

MOV 220-2 PREVENTIVE N/A --- --- DISCONNECTED AND RECONNECTED VALVE 1 WR D49u34 PER WORK INSTRUCTION O!

1 MOV 1521-2TB PREVENTIVE N/A =- --- ---- DISCONNECTED AND R ECONNECTED V ALVE PE R WORK INSTRUCTIONS, SET LIMITS AND II WR D49048 i CYCLED, LEFT OK

'O ,i 3RO-23T TO u*22 PREVENTIVE N/A --------- - INSPECTED ALL TORUS TEMP MUNITOR TORUS THERMOCOUPLE JUNCTION WR 049060 JUNCTION BOXES FOR E.Q., CHANGED GASKETS I j COXES LEFT OK ;

i 9l JET PUMP BEAM ASSEM8LY CORRECTIVE N/A REPLACED JET PUMP BEAM ASSEMdLY #11 PER i WR D49174 WORK INSTRUCTIONS, LEFT OK !

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DREiOEN UNIT 3

. SAFETY CELATED MAINTENDeCE g.

NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAENTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION i.

3-220-1 CORRECTIVE N/A -

REPLACED BROKEN BOLTS WITH NEW ONES, WP. D49442 ORILLED BOLT HEADS AND LOCKED WIRE 0 0 .

t 40-3-1301-4 PREVENTIVE N/A -- -

INSTALLED 4 TR AIN C ART RIDGE ASSEM8LY & O '

WR D50lT3 GEARED LIMIT SWI TCHE S PER INSTRUCTIONS O

3-1601-32E PREVENTIVE N/A == --- - REMOVED PACKING FLANGE, TORQUE TESTED TORUS VACUUM BREAKER WR 050182 AND INSPECTED, REINSTALLED PACKING h FLANGE, LEFT OK O

i 3-1601- 33 E PREVENTIVE N/A - = PULLED PACKING GLANDS FOR SHAFT +

TORUS VACUUM BREAKER WR D50183 INSPECTION AND REPLACED, LEFT OK OI i

3-1601- 32 F PREVENTIVE N/A ------- - REModED AND INST ALLED PACKING FL ANGES O.

TORUS VACUUM BREAKER WR D50184 FOR GLAND SEAL AREA INSPECTION, LEFT OK l

- O I

3-2301-49 PREVENTIVE N/A -- - RESET LIMITS AND STROKED VALVE, CHECKED f HPCI WR 050308 EVERYTHING OK 3D '

Oi j I .L.Ct.T. 4KV 4:REAKER PREVENTIVE N/A -

SET TRIP CHECKED PROTECTIVE RELAYS PER {

WR 050353 INSTRUCTIONS I O,

t RPS RELAY 590-108C PREVENTIVE N/A - --- - REMOVED STUCK WASHER IN THE RELAY, LEFT O WR 050367 OK el KOV 2331-49 PREVENTIVE N/A - - - - - - - -

. DISCONNECTED AND RECONNECTED AND WR 050469 OVERHAULED VALVE PER WORK INSTRUCTIONS I 3 I

9 COV 2 321-48 PREVENTIVE N/A - - - - - - - - - -

OISCONNECTED AND RECONNECTED AND WR 0504TO OVERHAULED VALVE PER WORK INSTRUCTIO.45 9

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DRESDEN UNIT 3

, SAFETY RELATED MAINTENANCE NATURE OF LER 02 OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE N UMas E R CAUSE RESULT CORRECTIVE ACTION O

3-2 3-1A TO ID PREVENTIVE N/A --- --- ==

REPL ACED JUNCTION BOXES ANO WIRING PER INBOAID MSIV'S WR 050646 WORK INSTRUCTIONS, LEF T OK O ,

a 1521-58 LIMITORQUE CORREC TIVE N/A - ------ REMOWED LIMITORQUE, CLEANED UUT OLO O WR 050715 GRE ASE AND R E ASSEMoLED WITH NEW GASKETS QUAD RINGS ANO O RINGS, INSTALLED NEW MC$tLU; 3 EASE, LEFT OK O 0-3 LIMITORQUES CORRECTIVE N/A -----

INSPECito ALL LIMIT 0dQUE STEM NUT WR 050731 LOCKNUTS, WORK WAS COMPLETED ON O WR 55918 O

MOV 1501-278 PREVENTIVE N/A ------ - -- -

REPL ACED INT &RNAL WIRING AND LUGS AND t WR 050748 REPLACED GREASE IN GEARED LIMIT SWITCH O

TE3-tM t-200 THRU 215 SUPP;ESSION POOL TEMPERATURE PREVENTIVE WR 051055 N/A -=-- --------- COMPLE TED WORK PER PROCEDURES, REPLACED DAMAGED SE ALTITE AND INPUT SELECTOR Ol ELEME%T CARDS, LEFT OK

. O MAII3 STRE AM LINES TEST AND CORRECTIVE N/A ---- --- ---

REPACKED ALL VALVES IN M AIN STREAM OR2IN VALVES IN X-AREA WR D51069 LINE S O D-151D-160, 1514-160, 1510A-10D PREVENTIVE N/A --------- --- =-

RT V' O AR E A DN PE NE TR ATIONS To SE AL O\

l CCSi$ ViULT PENETRATIONS WA D51076 LEAKAGE, LEFT OK g;

593-300 PREVENTIVE N/A - - - - - - - -

REPLACED MODE SWITCH PER PROCEDURE O" R*iCTOR MODE SWITCH WR 051393

' O, LITS 3-263-59ACB PREVENTIVE N/A - - - - - - - - ---------

CHANGED WIRE PER WOdK INSTRUCTIONS.

TURBINE TRIP CIRCUITRY WR DS1412 LEFT OK Oj O

3-1601-23 CORRECTIVE N/A - ---

REBUILT AIR CYLINDER USING REBUILO KIT PRATT CUTTERFLY VENT VALVE WR 051653 AND ALSO USED A NEW CYLINDER, REINSTALLED AIR OPERATOR, LEFT OK O O

O Di

=

0 4

,f ,

ORESDEN UNIT 3 St.F E T f RELATED MAINTEN*NCE NATURE OF LER O'1 DJTE.Gd MALFUNCTION MAINTENANCE NUM6ER CAUSE RESULT CORRECTIVE ACTION EQUIPMENT D -

FC E SSUR E SENSORS PREVENTIVE N/A =--- --= COMPLE TED CALIBR AT ING THE PRESSURE WR D52911 SErdSORS PER PROCEOURES, COMPLE TED VALVE AUDITS FOR ASSOCIATED SWITCHES Oi N/A -- ---- COMPLE TED WELD ON RE AR PANEL OUTSIDE O CONT 201. BOOM PANELS PREVENTIVE WR D53148 EDGE TO SKID CHANNEL PtR INSTRUCTIONS O

CORRECTIVE N/A -------- --- REPL ACED BONNE TT AND REPACKED VALVE 3-MO-23DI-48 D WR D53668 USING GRAF0tL, PACKING AND CHECKED VALVE STEMe,LEFT OK O

3-5 T M A PREVENTIVE N/A -- === --------- REPAIRED ONE MOTOR LEAD AFTER E AST LPCI ROOM COOLER MOTOR WR D53928 INSPECTION WI TH NRD. CLOSED AND CLEAREO FOR RUNNING LPCI COOLER O CORRECTIVE N/A ------ - --------- REPLACED DEFEC TIVE SWITCHBOARD WIRE. O LPCI CONTROL LOCTC WR 0541T4 LEFT OK O

ATWAS C ABINET C ABLE CONNECTOR PREVENTIVE N/A - - - - - - - - - - - - -

REINSTALLED CA3LE JACKET INTO CONNECTOR WR 054294 AND RETIGHTENED LEFT OK O O

ISC2-3 PREVENTIVE N/A -

PERFORMED WORK INSTRUCTIONS TO REMAKE WR D5432T INDICATOR SCALE, PERFORMED PROCEDURE TO U-3 TORUS LEVEL INDICATION O VERIFY SCALE CALIBRATION EAST LPCI ROOM COOLER MOTOR PREVENT!Vh N/A ----- - - - - - - - - REMOVED AND INSTALLED MOTOR LEADS B0x 0 ,

3-ST16-A WR 054409 COVER FOR NRC INSPECTION

< O "1" LPCI PUMP MOTOR PREVENTIVE N/A -- - - - - - REM 0dED AND INST ALLED MOTOR LEADS 80x WR D54413 COVER FOR NRC INSPECTION O O'

SBLC TEST TAP CONNECTION PRE VE NTIVE N/A --------- - - - - - REMOVED PIPE CAP S, INSTALLE0 HIGH PRESS WR D54421 L I NE AND BUSHING FOR HYDRO O,

t O!

O Ii i

l S

i

. e DRESDEN UNIT 3 ;

. $1FETf CELATED MAINTEN#4CE NiTUIE OF LEA 02 OUTAGE MALFUNCTION O{ j EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION ,.

L'EST LPCI RDOM CODLER 5F465 PAEVENTIVE N/A REMOVED AND INSTALLED MOTOR LEADS S0x !

WR 054435 COVER FOR NRC INSPECTION 9

SBLC HYDRO HOSE CORRECTIVE N/A -

REMOVED TEST H0SE AND FITINGS,1NSTALLED O' WR D54496 AND CLEANED PIPE NIPPLES USING PST SC AL ANT, LEF T OK 3-2*2-58 PRF. d E NT IVE N/A - - - - - - - - - - - - - TOOK CONTROL TRANSFORMER 007 OF 202-6B WR 054513 AND INSTALLED IN 202-58 AND PUT WIRES O 33 CECIRC PUMP MD DISCHARGE BACK IN SA ME PLACE, ALSO REPLACED SGME BAD CONTACTS At40 CLEANED REST, LEF1 OK i 1302 CORRECTIVE N/A - - - --- MADF 2 4" STUOS OUT 5/8" THREADEO ROD. j WR 054674 INST ALLED AT MIS $1NG LOC ATIONS, ISOLATION CONDENSER O LUuRICATED STUDS , LEFT OK l

MOV 1301-1 CORRECTIVE N/A --- -- -

REPL ACED MOTOR ON MOW 1301-1 AND O WR 054906 PERFORMED WORK PER TRAVELER, LEFT OK ! ,

e 3-1101-1 PREVENTIVE N/A --

-- ---=- ADJUSTED LIMIT SWITCH FOR COdRECT SBLC MANUAL WR D54916 INDICATION, LEFT On O j I

3-57418 PREVENTIVE N/A - - - - - - - COMPLETED TAPING PRDCEDURE PER WOR K -

LPCI/CS AREA ROON COOLER WR 054928 INSTRUCTIONS AND BECHTEL LETTER 311286 !

i CACLE AND CABLE TRAY CT 13 M1 CORRECTIVE N/A -=-

CLEANED OIL FROM TRAYS AND C ABLE S. O3 WR 054950 REPAIRED ALL DAMAGED CABLES PER WORK f INSTRUCTIONS, LEFT OK

~

O{ :

CAILE IN AND CABLE TRAY CORRECTIVE N/ A ----- CLEANEO INSPECTED AND RFPAIRED C ABLES !

CT 13T- WR D54951 IN C ABLE TRAY PER WORK INSTRUCTIONS, O LEFT OK O

3-A0-16D1-56 CORRECTIVE N/A - - - - - - - - - - - - - - - REPL ACED AIR CYL INDER AND PISTON COPS WR D55085 AND CLYLINOER END SEALS, LEFT OK i O

O Oi

. . . - - - . - . ~ . - . . . - . . . . _i e

E f ,

P

DXES!EN U3!T 3

() iE*

SAFETY RELATED MAINTEN ANC E

)

NATURE OF LER OR OUTAGE MILFUNCTION EQUIPMENT MAINTENANCE NUM8ER CAUSE RESULT CORRECTIVE ACTIDM '

C)

CABLE TRAY AND CABLE IN CABLE CORRECTIVE N/A -

CLEANED OIL FROM TRAY AND CABLES, T24Y CT 11 MI WR D55112 REPAIRED ALL DAMAGED C ABLES PER WORK INSTRUCTIONS, LEFT OK C) ,

CABLE TR AY AND C ABLE IN C ABLE C DR REC T IVE N/A -- -

CLEANED INSPECTED AND REPAIRED ALL ()

T2av CTitT WR D55113 DAMAGED CA8LES IN CABLE TRAY PER WORK INSTRUCTIONS, LEF T OK O

i C A LES IN CABLE TRAVS Cit 3TS PREVENTIVE N/A - --- - -- CUT WIRE IN CA3LE TR AY CT13TS AND AND CT13TN WR D55150 IDENTIFIED IT AS IRM 314 AND RECORDED C)

IT IN WR 55149 O

LT 3-263-61 C LT 3-763-101 PREVENTIVE N/ A --------- - - - - - - - - - ISUL ATED AND CALIBR ATED PER DATA CARD, WR 055167 NOTIFIED SHIFT SUPV. CUMPLETED G

MD 3-220-2 PREVENTIVE N/A ----- ==

PERFORME0 INSPECTIDN PER M.M.P. AND CI WR D55238 TRAVELER, OPENED AND CLOSED LIMIT COMP ARTMENT FOR INSP. AND TIGHIENED ALL

. COVER BOLTS CI U3 A0V 1601-21 CORRECTIVE N/A ------

REPL ACED DAMAGED SEALTIGHT, LEFT OK WR 055248 s CI CD f D3 RX DRYER AND SEPERATOR CORRECTIV E N/A --------- -

REPL ACED SEPER ATOR AND DRYER AND LATCHED WR 055272 00wN PER WORK INSTRUCTIONS AND PROCEDURE Oj -

241CB CORRECTIVE N/A - -- --- REPL ACED DAM AGED C ABLE SPLICE,1NST ALLED SI ' 4 U3 CHNL 'B' DW RAD MON!70R WR D55289 OPERABLE SPARE R AD MONITOR, PERFORMEu PROCEDURE ON NEW MONITOR, LEFT OK l

3-2C2-8 PREVENTIVE N/A -

INSTALLED SEAL KEEPERS AND TORQUED BOLTS (

CECIIC PUMP WR D55303 REMDVED SEAL KEEPERS AND CHECKED OI POSITION OF THRUST BUTTON WAS OK O

INSTRUMENT BUS UV RELAY PREVENTIVE N/A --------- ---- RESET AND REPL ACED RELAY PER WORK WR D55311 INSTRUCTIONS O

O O

t o t.

6 .

03ESDEN UNIT 3

.Qi.

. SCFETY RELATED GAINTENINCE i O'

NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION .

LPCI CLARMS CORRECTIVE N/A =

RE.^ AIRED WIRE AND CHANGED AL ARM CARD WR D55367 O .

3-@305-129 138-31) PREVENTIVE N/A --- --=- DRAINED DOWN WATER IN SENSDR CAVITY, O CRD CCCUM IK-81 WR 0553T1 VALVED SENSOR BACK IN AND ALARM dESET, LEFT OK i

3-3305-130 PREVENTIVE N/A --------- -- REPLACED PRESSURE SWITCH, WHICH WAS CCD CCCUM 42-07 IL-23 WR 055374 FILLED WITH W ATER, AND PLRFORMED 0 PRUCEDURE, LEFT OK O

3-833 PREVENTIVE N/A TOOK OLD SEALTITE OUT AND INSTALLED A GRAPPLE WR 055383 NEW ONE, LEFT OK O

3-C0 1101-22 CORRECTIVE N/A ----- DISASSEMBLED A0 AND REPLACED CUPS, AIR O TORUS VENT VALVE WR D55408 CYLINDER AND END SEALS, REASSEMBLED AND '

LEFT OK' O

REFUEL GRAPPLE PREVENTIVE N/A - - - - - - ---

ADJUSTED SLACK CABLE SalTCH TO GET WR 055431 SLACK LIGHT INDICATION, LEFT OK O, O

SIM C IRM'S PREVENTIVE N/A --------- ==--- PERF ORMED WORK INSTRUCTIONS ON ALL SRM WR D55434 AND IRM'S, WR 355466 WRITTEN Td REPAIR SRM 324, ALL OTHER S LOOK OK O SRM AND IRM'S PREVENTIVE N/A - --- -- PERFURMED WORK INSTRUCTIONS PER () '

WR D55443 WORK REQUEST , LEFT OK O'

D-iO 1101-21 CORRECTIVE N/A --------- -- ==-

. DISASSEMBLED AIR OPERATOR AND REPLACED TORUS VENT VALVE WR 055462 BAD AIR CYLINOER, CUPS AND END SEALS, O RE ASSEMBLED AIR OPER ATOR, LEFT OK i AETIGHTENED CONNECT 04, SHIELD TO Ol RM 3-755-224 CORRECT!vE N/A - - - - - - - - - - - - - - - -

5%C #24 DET. CONNECTION WR D55466 GROUND RESISTENCE OK, LFFT OK O

O O i, o: .

O e# e

. . D, Y , ~

OREEDEN Ux!T 3

- St.FETY RELATED MAINTENANCE g N'eTURE OF LER 03 OUTAGE MILFUNCTION

EQUIPMENT MAINTENANCE NUM3ER CAUSE RESULT CORRECTIVE ACTION CM3-T55-IT CORRECTIVE N/ A

-- CHANGED OUT CONNECTOR ON DETECTOR TO 123 SIT INSIDE PENT. CONN. WR 05546T REPAIR LOW VALVE RESISTENCE, LEFT OK gj REFUEL GRAPPLE PREVENTIVE N/A -

CHECKED TRACK SWITCHES AND FUSES ON O WR 055468 REFUEL GRAPPLE AND ALL CHECKED OUT OK D

3A LFCI/CS ROOM COOLER PREVENTIVE N/A --- === MOTOR AND CidCUIT TESTS 0, WILL REPAld WR 055483 OPEN WIRE AT MOTOR CONNECTOR ON WR O 355490 O

REFUEL GRAPPLE PREVENTIVE N/A -- - - - - - - - - ADJUSTED SLACK CABLE SWITCH TO GET WR 05548T PROPER INDICATION, LEFT OK D

REFUEL GR APPLE PREVENTIVE N/A -- --- ADJUSTED LOAD CELL TO GET PROPER 9 WR 055428 FUNCTIONING OF GRAPPLE, LEFT OK OI !

3-5 TMA PREVENTIVE N/A -- - REPAIRED DAMAGED MOTOR SPLICE PER LPCI-ILM-CLR WR 055490 MMP AND TRAVELER, LEFT OK D D

3-1402-25A PREVENTIVE N/A =--- - -- - CHECKED ALL SETTINGS AND PER kORK WR 055494 INSTMUCTIONS D

FLOW SMITCH 3-1464A PREVENTIVE N/A --- -- - - - - -

BACKFILLEO I464A PER WORK INSTRUCTIO.1, O WR 055496 VERIFYING FLOW INTO THE CORE SPRAY PIPING, LEFT OK

-9 .

FLO2 SWITCH 3-14648 PREVENTIVE N/A == SACKFILLEO I4648 PER WORK INSTRUCTIONS,

- WR 05549T VERIFYING FLOW INTO THE CORE SPRAY I

+ PIPING, LEFT OK O

3-305-!!! CORRECTIVE N/A ---

REMOVED OLO PACKING AND ?NSTALLED NEd ACCUM 54-31 WR 055519 PACKING AS PER WORK INSTRUCTIONS, LEFT OK O I

ef 9l I

I Dl e

s 9 r

p .

7_..._..

DRE10EN UNIT 3 4I.L SAFETY RELATED MAINTENANCE O.

LER OR OUTAGE MALFUNCTION t.

NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION EQUIPMENT O .! .

LPIs,53-33C CORRECTIVE N/A -

--- - RESPLICED cable AT 5NSIDE DRYWELL WR D55731 PENETRATION, PERFORMED PROCEDURE, LEFT w O ,

CORRECTIVE N/A - RESPLICED INSIDE PENETRATION CUNNECTION O LPRM 48-41A --

WR D55T32 LEFT OK O

LP2M 40-33C CORRECTIVE N/A - - - - - - - - - =

REPLACED CONNECTION AND TESTED PER WR D55733 PROC EDURE, L EF T OK O O

LPRM C8-41A CORRECTIVE N/ A - - - - - - - - -- - REPL ACED CONNECTOR AND TESTED PER WR D55734 PROCEDURE, LEF T OK ,

OI .

k i

LPRM 32-33C CORRECTIVE N/A - - - - - - RESPLICED CABLE AND ADDED NEW CONNECTOR O' WR D55736 NEAR CR0 FLANGE AREA, TESTED CABLE PER PROCEDURE, LEFT OK O

CDD CLOCK MDNITOR #7 CORRECTIVE N/A -

- - - - - - - - REPLACED e5 VOLT POWER SUPPLY WHILE WR 0557T7 PERFORMING PROCEDUPE, LEFT OK O INSPECTED, CLEANED AND RErAIRED DAMAGED ol I C ABLE TRAY AND C ABLE IN C ABLE PREVENTIVE N/A TAAV CT13M4 WR D55797 OUTER JACKET OF CAoLES, LEFT OK i TE2MINAL AA FUSE BLOCK PREVENTawi. N/A ---- - - - - - - - - RECONNECTED LOOSE WIRE AND INSURED O '

WR D55844 THAT IT WAS TIGHT ;

< .j, I CLEAN TRAY AND CABLE IN CABLE PREVENTIVE N/A INSPECTEO, CLEANED AND REPAIRED TRAY CT13M5 WR 055882 DAMAGE 0 OUTER JACKET OF CABLES, LEFT OK O O

CABLE TRAY AND CABLE IN CABLE PREVENTIVE N/A --- --- -- -

REPAIRED DAMAGED OUTER JACKET OF CA6LES TRAY CT22TN TS WR 055883 PER WORK INSTRUCTIONS, INSPECTED AND CLEANED CABLES, LEFT OK O l

. O l O e

Wlo. ,

G=

DRE10EN UNIT 3 j SAFETY RELATED MAINTENANCE O

NATURE OF LE:t OR OUTAGE MtLFUNCTION EQUIPMENT MAINTENANCE NUMuER CAUSE RESULT CORRECTIVE ACTION l*

1301-3 CORRECTIVE N/A ------ - - - - ~ ~ ~ TIGHTENED DRIVE LOCK NUT AND STAKED ISOLATION CONO. INLET MO WR 055918 PER w0RK INSTRUClj9NS, LEFT OK j MOV 1001-18 PREVENTIVE N/A - --- -

CORRECTED ALL E.Q. DEFICIENCIES, USEo O, WR D55939 1/4" RUBBER GASKET MATERI AL FOR C ABLES IN ACTUATOR, LEF T OK 3-1601-208 CORRECTIVE N/A REINSTALLEO OLD VALVE, NEW BOTTOM O

TORUS VENT VALVE WR 055943 TRUNNION PACKING, CLEANED VALVE, INSPECTED FLANGES SEAT AND DISC AREA, LEFT on 3-233-2-31K CORRECTIVE N/A -- -== - - - - - - - - - INSTALLED NEW POPPET VALVE, FILED SEAT i INSie FLOW CHECK VALVE WR 055991 PER PROCEDURE, TESTED OK, LEFT OK O '

3-220-18A CORRECTIVE N/A --- - - = - INSTALLED NEW POPPET VALVE, TESTED, O i It:ST FLOW CHECK VALVF WR 055992 FILEO SEAT, LEFT OK (

O 243-100A, 1008 CORRECTIVE N/A ==-- PERFORMED PROCEDURE, REC ALIBRATED ME TER, LEVEL INDICATORS-MEDIUM RANGE WK 056019 LEFT OK O' REMOVED BONNET AND VALVE INTERNALS, O!

3-1402-8A CORRECTIVE N/A - --------

j CORE SPRAY STOP-CHECK VALVE WR D56029 FOUND VALVE STUCK OPEN AND CLEANEO, 4 REASSEMBLED VALVE, LEFT OK O>

P-3 SECTION OF CRD ACCUM. CORRECTIVE N/A -------- -------- INSTALLED O-DING AND TIGHTENCD PLUG OA MA%IFOLD WR 056051 PER w0RK INSTRUCTIONS, L EF T OK !

=

3-2301-8 PREVENTIVE N/A ==- ADJUSTED PACKING TO ELIMINATE LE AK AGE, Ol VALVE WR D56054 LEFT OK O' S

I 3-315-104 PREVENTIVE N/A ---

TIGHTENED PACKING AND LEAKAGE STOPPED VALVE ON CRD ACCUMUL ATOR WR 056103 0

O O

o O

O O

4

. ym

. O !.

ORE 5 DEN UNIT 3

. SAFETY RELETE0 M2INTENJ.NCE NATURE OF LER DA OUTAGE M*LFUNCTION EQUIPMENT MAINTENANCE NUM8ER CAUSE RESULT CORREC TIVE ACTION =

3-1401-A PREVENTIVE N/A - --- DISASSEMBLED AND REASStMBLED CYCLONE OCORE SPRAf PUMP WR D56123 , STRAINER, FOUNO STRAINER TO BE CLEAN, LEFT OK O ,

I DIESFL GENERATOR AIR START CORRECTIVE N/A --- REPLACE 0 AIR START REGULATOR VALVE,LEFT O '

GEGULATOR WR D56158 OK O

'S' CORE SPRAY SUCTION SPOOL PREVENTIVE N/# --- --------- PMOVED SPOOL PIECE AND PERFORMED PIECE WR 056175 CLEANLINESS INSPECTION AND REINSTALLEO O LEFT OK O

ttOO SNUB 6ERS 8405 AND S406 CORRECTIVE N/A -- ---------

ADJUSTED AND TIGHTENED PIPE CLAMPS ON WR 05622T SNUBBERS, LEFT OK O

I FT 3-1549-8 PREVENTIVE N/A --

COMPLETED APPLICABLE SECTIONS OF 0 LPCI SYSTEM II FL OW COMPUTER WR 056251 PROCEDURE TO CHECK COMPUTER POINT ;

POINT ACCURACY AND FOUNO IT TO BE GOOD O i TARGET ROCK BELLOWS SEAL PRESSURE SWITCH 3-3A CORRECTIVE WR 056253 N/A =- - --- REPL ACED C ABLE FROM BELLOWS SEAL PRESSUdE SWITCH TO FIRST JU.4CTION SOK. Ol TESTED SWITCH PER PROCEDURE, LEF T UK Oi ATWS PREVENTIVE N/A =- ---- TURNED ON CIRCUIT BRE AKER 314 THAT WAS i WR 056259 FOUND TO BE OFF, RESET TROUSLE ALARM, I LEFT OK O:

3-1402-8C PREVENTIVE N/A ' - - - ==- DISASSEMoLED VALVE, CLE ANED PARTS OI CORE SPRAY STDP CHECK VALVE WR D562T9 AND REASSEMBLE 0 VALVE, LEFT OK

O LIS 3-263-728 CORRECitVE N/A ---

REALIGNED MAGNET FOR LO-LO LEVEL RK LEVEL ECCS YARWAY WR 05630T SWITCH, PERFORMED PRUCEDURE, LEFT OK O l

REPAIRED LEAKING VALVE BV REPLACING O!

3 LO-1601-20A CORREC TIVE N/A -- -- -

TORUS VENT VALVE WR 056309 0 RINGS USING REPAIR KIT, LEFT OK O

O O

O-0 0 9

. R!.

ORE 10EN UrtIT 3

$AFETY RELATED MAINTENANCE D

MTURE OF LEQ OR DUTAGE MALFUNCTION EQUIPMENT MA44TENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION !.

O 3-tC2h CORRECTIVE N/A SACK FLUSHED SENSING LINES PER WORK TORUS LEVEL INSTRUMENTS WR D56324 INSTRUCTIONS , L EF T OK J O' .

t 3-1402-26A PREVENTIVE N/A REMOVED AND INSTALLED BONNET FOR O WR 056503 HYDROL AZ ING, LEF T OK O,

HM3-2472-8Ib CORRECTIVE N/A -----

CLEANED OIRT OFF VALVES AND SEATS AND

'B' 4000 C AM H202 MONITOR WR 056T41 INSTALLED NEW O RINGS AND MADE 2 NEW O HEAD GASKETS, REASSEMBLED PUMP AND LEFT OK f

i O!

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i

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0 Ol D

O e

f g g

/ 6

-s

.., UNIQUE REPORTING REQUIREMENTS MAIN STEAM RELIEF VALVE OPERATIONS Relief valve operations during the reporting period of September, 1986 are summarized in the following table. The table includes information as to which relief. valve was actuated, how it was actuated,'and the circumstances resulting in its actuation.

Valves Description Unit Reporting Period Actuated Actuations Conditions of Events-2 09-01-86 to 09-30-86 None 3 09-01-86 to 09-30-86 None l

l l

o-- .

8 e-

SUMMARY

OF OPERATING EXPERIENCE UNIT TWO SEPTEMBER, 1986 09-01-86 to 09-20-86 Unit 2 entered the month on-line at a power level of 804 MWe and operated until 0125 hours0.00145 days 0.0347 hours 2.066799e-4 weeks 4.75625e-5 months of September 17th

,when the turbine was manually tripped off-line to improve main condenser performance. The reactor was manually made sub-critical at 0709 hours0.00821 days 0.197 hours 0.00117 weeks 2.697745e-4 months of the same day.

While the unit was off-line, the main condenser was inspected for resolution of improving vacuum and per-formance. After determinations were completed, the reactor was made critical on September 19th at 0427 hours0.00494 days 0.119 hours 7.060185e-4 weeks 1.624735e-4 months and the turb'ine was brought on-line at 0627 hours0.00726 days 0.174 hours 0.00104 weeks 2.385735e-4 months of September 20th.

09-20-86 to 09-30-86 The unit operated the remainder of the month reaching a power level of 737 MWe with an availability of 89.30%

and a capability of 71.59%.

p

4

~. .

9 o

SUMMARY

OF OPERATING EXPERIENCE UNIT THREE SEPTEMBER, 1986 09-01-86 to 09-04-86 Unit 3's refueling and recirculation piping replacement outage was officially over at 0905 hours0.0105 days 0.251 hours 0.0015 weeks 3.443525e-4 months of September 1st, when the turbine was synchronized to the system, culminat-ing a 10 month duration. A manual reactor scram and turbine trip at 0330 hours0.00382 days 0.0917 hours 5.456349e-4 weeks 1.25565e-4 months of September 2nd was performed because CRD pump 3B auto-tripped when the charging water valve of CRD M-3 stuck open. After repairs were executed the reactor was made critical at 0320 hours0.0037 days 0.0889 hours 5.291005e-4 weeks 1.2176e-4 months of September 4th and the turbine was brought on-line at 2003 hours0.0232 days 0.556 hours 0.00331 weeks 7.621415e-4 months of the same day.

09-04-86 to 09-06-86 At 2030 hours0.0235 days 0.564 hours 0.00336 weeks 7.72415e-4 months the turbine was manually tripped off-line because of high vibration on # 7 bearing (the reactor remained critical). After determinations about bearings and turbine bearing oil were completed, the unit was brought on line at 0015 hours1.736111e-4 days 0.00417 hours 2.480159e-5 weeks 5.7075e-6 months of September 6th.

09-06-86 to 09-27-86 The unit operated, reaching a power level of 850 MWe, until the 27th at 0428 when an automatic turbine trip and subsequent hi flux scram occurred because of flow reversing valve 3-4402D failure.

09-27-86 to 09-30-86 After repairs were effected, the reactor was made critical on September 27th at 2045 hours0.0237 days 0.568 hours 0.00338 weeks 7.781225e-4 months and the unit was brought on-line at 1520 hours0.0176 days 0.422 hours 0.00251 weeks 5.7836e-4 months of September 30th.

At 2128 hours0.0246 days 0.591 hours 0.00352 weeks 8.09704e-4 months of the same day, the turbine was manually taken off-line to perform the normal turbine overspeed test and the turbine was brought on-line at 2213 hours0.0256 days 0.615 hours 0.00366 weeks 8.420465e-4 months after the successful test. Availability for the month was 74.31% and capability was 39.55%

Commonwealth Edison Dresden Nucle:r Power St: tion R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 October 1, 1986 EDE LTR: 86-080 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 August, 1986. This information is supplied to your office per the instructions set forth in Regulatory Guide 1.16.

Sincerely, .

E. D. Eenige bu g Station Manager 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 Nuclear Fuel Services Manager Nuc. Sta. Div. Vice Pres.

Manager, Tech. Serv. Nuc. Sta.

Tech Staff A.E. (2)

On-Site NRC Inspector Sta. Nuc. Eng. Dept.

Sta. Q.A. Dept.

Comptroller's Office PIP Coordinator INP0 Records Center File /NRC Op. Data File / Numerical (S'G'd \

i

_ ----__________J

ML20211B273

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O LIS 3-263-728 CORRECitVE N/A ---

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O LIS 3-263-728 CORRECitVE N/A ---

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