ML20138J810

Monthly Operating Repts for Nov 1985

ML20138J810
Person / Time
Site:	Dresden
Issue date:	11/30/1985
From:	Maxwell D, Scott D COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
85-1128, NUDOCS 8512180054
Download: ML20138J810 (22)

Text

. ._. _

OPERATING DATA REPORT DOCKET NO. 050-237 DATE December 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 ,

OPERATING STATUS NOTES

1. Unit Name: Dresden II

2. Reporting Period: November, 1985

3. Licensed Thermal Power (MWt): 2 527

4. Nameplate Rating (Gross MWe): 828 5 Design Electrical Rating (Net NWe): 794

6. Maximum Dependable Capacity (Gross MWe): 812

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 MWe): N/A

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

11. Hours in Reporting Period 720 8,016 136,320

12. Number of Hours Reactor Was Critical 639.5 4,217.6 103,953.5 13 Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On-Line 599.4 3,936.2 98,240.6

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 1,253,993 8,462.275 199,800,333 17 Gross Electrical Energy Generated (MWH) 403,779 2,681,357 63,902,698

18. Net Electrical Energy Generated (MWH) 382,677 2,516,390 60,365,016 19 Unit Service Factor 83.2 49.1 72.1

20. Unit Availability Factor 83.2 49.1 72.1

21. Unit Capacity Factor (Using MDC Net) 68.8 40.7 57.4

22. Unit Capact ty Factor (Using DER Net) 66.9 39.5 55.8

23. Unit Forced Outage Rate 16.8 28.9 12.4

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

Mid-Mav. 1986 for a weekend drvuell snubber inspection.

I

25. If Shut Down At End Of Report Period, Estimated Date of Startup: N/A 4

8512180054 851130 7 DR ADOCK 050 L- )

. ' OPERATING DATA REPORT DOCKET NO. 050-249

- DATE December 1, 1985 COMPLETED BY D. C. hh.well TELEPHONE 815/942-2920 OPERATING STATUS NOTES

1. Unit Name: Dresden-III

2. Reporting Period: November, 1985

'3 Licensed Thermal Power (MWt): 2.527

4. Nameplate Rating (Gross HWe): R9R

5. -Design Electrical Rating (Net MWe): 794

- 6. Maximum Dependable Capacity (Gross MWe): R19 7 Maximum Dependable Capacity (Net MWe): 773

8. If Charges 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 8,016 125,905

12. Number of Hours Reactor Was Critical 0 6,718.8

~

96.596.7 13 Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On-l.!r.c o 6,621.2 89,793.3

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 0 14,715,613 181,772,636 17 Gross Electrical Energy Generated (MWH). 0 4,632,256 58,839,233

'l. 8 Net Electrical Energy Generated.(MWH) -6,041 4.395,289 55,731,519 19 Unit Service Factor 0 82.6 71.3

20. Unit Availability Factor o P2.6 71.3

21. Unit Capacity Factor (Using MDC Net) 0 70.9 57.3

22. Unit Capacity Factor (Using DER Net) 0 69.1 55.7

23. Unit Forced Outage Rate O 7.7 12.4

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

In 9th Refueling / Recirculation Pipe Replacement (RPR) outage.

25. If Shut Down At End Of Report Period, Estimated Date of Startup: July. 1985

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-237 UtilT II DATE December 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920, Ext. 489 MONTH hvembe r , 1985 DAY' AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 0 17 711 2 0 18 708 3 0 19 773 4 0 20 779 5 293 21 780 6 513 22 791 __

7 585 23 770 8 641 24 721 9 664 25 777 10 689 26 764 11 454 27 772 12 277 28 721 13 145 29 710 >

14 363 30 746 15 351 31 16 581 l

AVERAGE DAILY UNIT POWER LEVEL' DOCKET NO. 050-249 UillT III DATE December 1, 1985 COMPLETE,D BY D.-c. Maxwell TELEPHONE 815/942-2920 Ext. 489 MONTH November, 1985 DAY ' AVERAGE DALLY POWER LEVEL DAY AVERAGE DAILY. POWER LEVEL (MWe-Net) (MWe-Net) 1 0 17 0 2 0 18 0 3 0 19

. 0 4 0 20 0 5 0 21 0 4

6 0 22 0 7 0 0 23 8 0 24 0 9 0 0 25 10 0 26 0

. 11 0 27 0 12 0 28 0 13 0' 29 0 14 0 30 0 15 0 31 i

j '16 0 l

\

= m-w- -w-,- ,--y--, g-ye--- ,-y , ,

g- ,- -y- -

,- , , ,,p.- ,, - - - - p---e,-.,,3,,,v,

, COMMONWEALTH EDISON COMPANY DRESDEN STATION MAXIMUM DAILY LOAD MONTH OF' November, 1985 HOUR MAXIMUM DAILY LOAD DAY ENDING KW 1 -- 0 2 -- 0 3 --

0 4 2400 117,300 5 0400 348,900 6 1600 685,100 7 0100 658,000 8 1400 721,900 9 1900 706,000 10 2300 775,700 11 0300 790,900 12 1100 709,000 13 2100 468,400 14 0400 463.100 >

15 2400 479,700 16 1500 6b5,400 17 1400 767,200 18 2400 806,800

19 1800 821,600 20 1700 824,100 i

21 2400 826,900 22 0200 827,700 23 0800 825,800 24 2400 805,900 25 0400 819,900 26 0100 805,900 27 1400 81'0,700 28 2100 794,400 l

29 0100 792,700 30 2100 800,200 ,

31 --

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

I

. DOCKET NO. 050-237 - -

i' UNIT NAME TI

' UNIT SHUTDW NS AND POWER REDUCTIONS DATE December 1, 19B 5' .<

' COMPLETED BY D. C. Maxwell TELEPHONE (815) 942-2920 REPORT MONTH November, 1985 METHOD OF LICENSEE NO. CAUSE & CORRECTIVE DATE' TYPEI DURATION REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO (EOURS) DOWN REACTOR 3 REPORT F CODE 4 CODES PREVENT RECURRENCE 8 85-09-29 S 94:27 H 3 85-035-0 -- --

Unit was taken off-line manually

. (94.5) for snubber inspections and E.Q.

modifications (Rx scram 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />

~

after off-line because of low

, condenser vacuum.

9 85-11-12 F 26:.12 A, 3 85-041-0 -- --

Valve failure on instrument rack (26.2) while performing I.M. surveil .

lance DIS 500-3.

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i 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) (NUREG-0161)

E-Operator Training & License Examination .

F-Administrative i i G-Operational Error i

H-Other (Explain)

DOCKET NO. 050-249 ~ - -

UNIT NAME Dresden III UNIT SHUTDOWNS AND POWER REDUCTIONS DATE December 1, 1985

• COMPLETED BY D. C. Maxwell TELEPHONE (815) 942-2920 .

REPORT MONTH November, 1985 l

l

' METHOD OF LICENSEE NO. DATE'- TYPEl CAUSE & CORRECTIVE DURATION REASON 2 SHUTTING EVENT SYSTEM COllPONENT ACTION TO (HOURS) DOWN REACTOR 3 REPORT F CODE 4 CODE 5 PREVENT RECURRENCE l 6 85-10-28 S .720:00 C 1 -- - --

Off-line manually to 9th

, Refueling / Recirculation Pipe.

Replacement Outage.

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2 a

l- -

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1 2 '

3 . 4 F: Forced Reason: Method: Exhibit G-Instructions for S: Scheduled A-:'.quipment Failure (Explain) 1-Manual Preparation of Data B-Mdntenance or Test 2-Manual Scram Entry Sheets for Licensee l C-RefuelinE i

3-Automatic Scram Event Report ( ) File D-Regulatory Restriction 4-Other (Explain) (NUREG-0161) l E-Operator Training & License Examination .

F-Administrative I

. G-Operational Error f

( ,

H-Other (Explain)

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - NOVEMBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER' CAUSE RESULT CORRECTIVE ACTION MSIV Tarminal Preventive W.R. #25233 N/A --- ---

Replaced terminal blocks and cable with Blocks E.Q. type.

Drywall Instru- Preventive W.R. #25236 N/A --- ---

Replaced all terminal blocks.

ment Air System MSlV Limit Preventive W.R. #31170 N/A --- ---

Replaced limit switches and performed Switch s 10% procedure.

Scram HPCl Room Cooler Preventive W.R. #34311 N/A --- ---

Replaced motor bearings and belts.

Motor.

Preventive W.R. #34364 N/A MO-2-202-6A --- ---

Replaced motor torque switch, limit switch and contact assembly.

SDC MO-2-1001-1B Preventive W.R. #36767 N/A --- ---

Checked and verified torque switch open and stop valve in closed position.

SDC M02-1001-1B Preventive W.R. #36767 N/A --- ---

Checked and verified torque switch open and stop valve in closed position.

2-202-6A,6B Corrective W.R. #38889 N/A --- ---

Tested per work instructions.

Cross-tie Valves

1. 2 Diesel Preventive W.R. #40920 N/A --- ---

Changed parts and performed inspection Generator as requested.

Panal 902-10 Preventive W.R. #41017 N/A --- ---

Replaced cables.

Exxon Rod Preventive W.R. #40336 N/A --- ---

Installed rod basket and performed Storage Basket inspection.

DRESDEN UNIT 2

• SAFETY RELATED MAINTENANCE - NOVEMBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Itolation Con- Corrective W.R. #41106 N/A --- ---

Replaced broken yellow wire lug.

d;nstr Reset i Switch D/W Rod Selector Preventive W.R. #41937 N/A --- ---

Checked cables - found no problem.

RE 2418-A D/W Rad Detector Preventive W.R. #41938 N/A --- ---

Checked cables - found no problem.

RE 2418B U-2 MOV-1201-1 Preventive W.R. #42104 N/A --- ---

Performed inspection for E.Q.

U-2 MOV-1001-1B Preventive W.R. #42119 N/A --- ---

Performed E.Q. inspection and repaired.

Coce Spray Pump Preventive W.R. #42183 N/A --- ---

Inspection for E.Q. and drilled weep 1401A hole in motor lead box.

LPCI Pump Preventive W.R. #42186 N/A --- ---

Inspected for E.Q. and drilled hole in 1502B motor box.

LPCI Pump 1502A Preventive W.R. #42187 N/A --- ---

Drilled hole and completed Westec check-list.

HFA Relay Preventive W.R. #42559 N/A --- ---

SER W.R. 48637 to rebuild this relay -

595-131 reinstalled old relay.

MO-2-1501-27A Preventive W.R. #42936 N/A --- ---

Removed jumpers and performed test procedure.

MOV-202-5B Preventive W.R. #43580 N/A --- ---

Replaced internal wiring and added grease.

MOV 1001-!A Preventive W.R. #43583 N/A --- ---

Replaced grease and L.S. computer cover with cast iron per E.Q.

MOV-1001-1B Preventive W.R. #43584 N/A --- ---

Replaced grease and internal wiring.

DRESDEN UNIT 2 SAFETY REIATED MAINTENANCE - NOVFMBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION MOV 1201-2 Preventive W.R. #43386 N/A --- ---

Replaced grease and internal wiring, and spliced motor lead connections.

MOV-1201-3 Preventive W.R. #43587 N/A --- ---

Replaced grease and internal wiring, and spliced motor lead connections.

MOV-1301-1 Preventive W.R. #43588 N/A --- ---

Replaced grease and internal wiring, and spliced motor lead connections.

MOV-1402-24A Preventive W.R. #43591 N/A --- ---

Replaced grease and internal wiring, and spliced motor lead connections.

MOV-1402-38A Preventive W.R. #43597 N/A --- ---

Replaced grease and internal wiring, and spliced motor lead connections.

MOV-1501-21B Preventive W.R. #43603 N/A --- ---

Replaced grease and internal wiring, and spliced motor lead connections.

MO-2-1201-1A Preventive W.R. #43697 N/A --- ---

Inspected and checked - found no problem.

2-1301-3 Preventive W.R. #44007 N/A --- ---

Adjusted torque switch.

MOV-1301-4 Corrective W.R. #44662 N/A --- ---

Replaced switch with cast iron cover and replaced gasket.

SRM 24 Preventive W.R. #45239 N/A --- ---

Checked SRM and performed procedure.

1. 2 Di sel Preventive W.R. #45590 N/A --- ---

Performed semi-annual diesel inspection.

Gcn rstor Rrcirculation Preventive W.R. #45840 N/A --- ---

Reset stop per procedure.

Pump Scoop Tubes U-2 Target Rock Preventive W.R. #46482 N/A --- ---

Installed new terminal blocks and checked Valys 203-3A conduit fittings per E.Q.

r-DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - NOVEMBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Accu:.ulator Preventive W.R. #46530 N/A --- ---

Tightened fittings and screws.

30-15-118 Valve Accumulator Preventive W.R. #46531 N/A --- ---

Tightened fittings and screws.

30-55-118 Valve Accuxulator Corrective W.R. #46537 N/A --- ---

Stopped air leaks by tightening fittings 300-3403-118 and screws.

Valva Accumulator Corrective W.R. #46533 N/A --- ---

Stopped air leaks by tightening fittings 300-5831-118 and screws.

Velve Accuculator Corrective W.R. #46534 N/A- --- ---

Stopped air leaks by tightening fittings 300-5439-118 and screws.

Valve Accurulator Corrective W.R. #46540 N/A --- ---

Stopped air leaks by tightening fittings 300-3007-118 and screws.

Valva Accu 1ulator Corrective W.R. #46541 N/A --- ---

Stopped air leaks by tightening fittings 300-4235-118 and screws.

Valva Accurulator Corrective W.R. #46542 N/A --- ---

Stopped air leaks by tightening fittings 300-5035-118 and screws.

(alv2 Accuculator Corrective W.R. #46543 N/A --- ---

Stopped air leaks by tightening fittings 300-5051-118 and screws.

Vnive Accuculator Corrective W.R. #46544 N/A --- ---

Stopped air leaks by tightening fittings 300-3455-118 and screws.

Valys

J

, ( DRESDEN UNIT 2 ,

. 's  %

SAFETY RELATED MAINTENANCE - NOVEMBER, 1985 i

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

Accu:s sla tor Corrective W.R. #46545 N/A --- ---

Stopped air leaks by tightening fittings 300-422 -118 and screws.

Vniva Accuculator Corrective W.R. #46546 N/A --- ---

Stopped air leaks by tightening fittings 300-4219-118 and screws.

Valva

• Accumulator Corrective W.R. #46547 N/A --- ---

Stopped air leaks by tightening fittings 300-46-19-118 and screws.

Valva Accurulator Corrective W.R. #46548 N/A --- ---

Stopped air leaks by tightening fittings 300-46-43-118 and screws.

V:1va Accu 1ulator Corrective W.R. #46549 N/A --- ---

Stopped air leaks by tightening fittings 300-30-47-118 and screws.

Valva AccuTulator Corrective W.R. #46550 N/A --- ---

Stopped air leaks by tightening fittings 300-38-51-118 and screws.

Valva Accuzulator Corrective W.R. #46551 N/A --- ---

Stopped air leaks by tightening fittings 300-34-51-118 and screws.

Valva Accu 1ulator Corrective W.R. #46552 N/A --- ---

Stopped air leaks by tightening fittings 300-34-59-118 and screws.

Valve Accunulator Corrective W.R. #46553 N/A --- ---

Stopped air leaks by tightening fittings 300-34-47-118 and screws.

V21va

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DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - NOVEMBER, 1985

. i LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION l'Accurulator _

Corrective W.R. f46554 N/A --- ---

Stopped air leaks by tightening fittings.

i 300-42-47-118 and screws.

Valve Accurulator Preventive W.R. #46555 N/A --- ---

Stopped air' leaks by tightening fittings

_300-46-47-118 +

and screws.

' Valve Accurulator Corrective W.R. f46556 N/A --- ---

Stopped air leaks by tightening fittings 300-58-39-118 and screws.

Valve Accurulator Corrective W.R. f46557 N/A --- ---

Stopped air leaks by tightening fittings 300-42-39-118 Valve Accumulator Corrective W.R. f46558 N/A ---

Stopped air leaks by tightening fittings 300-50-15-118 and screws.

Valva Accurulator Corrective W.R. 46559

. N/A --- ---

Stopped air leaks by tightening fittings 300-46-15-118 and screws.

Valva Accurulator Corrective W.R. f46560 N/A ---

Reinstalled cap nut.

300-38-15-118 Valve Accuculator Corrective W.R. f46561 N/A --- ---

Tightened fittings screws.

300-34-15-118 Valve U-2 24/48 VDC Corrective W.R. f46613 N/A Replaced sticking timer.

"B" Pos. Battery Charger

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - NOVEMBFK. 1985 a- - '

~

- . < LER OR OUTAGE MAI. FUNCTIO [ .

EQlIIPMENT _

NATURE OF MAINTENANCE NUMBER 'CAUSb RESULT CORRECTIVE ACTION I;0lttion Con- Preventive W.R. #46734 N/A --- , --- Replaced. coll'~with like-to-like one.

~

' " - /

d,n ar Liquid Lidel Fill Valve Cont. Demin. H 2O ._f ~

2-1301-10 Valve ,

A0-2-220-44 Corrective W.R. #46864 N/A --- ---

Installed new packing. ~

• Rx Bldg. Outside Corrective W.R. #47179 N/A --- ---

Installed new flange and gasket.

Wall Panetration APRM Scram and Preventive W.R. #47211 N/A --- ---

Completed procedure. '

Rod Block j _

Sattings >

Rod Block Moni- Preventive W.R. #47212 '

N/A --- ---

Completed procederc.

tor Upscale , ,

ratting 2B LPCI Ppmp Preventive W.R. #47246 - N/A - - - ---

Performed E.Q.' inspection on cable.

LPCI Pump .

Preventive W.R. #47255 N/A --- ---

Performed E.Q. inspection.

Brzaksr 23-1-Cub 2331 ,.

"B" LPCI Pump Preventive W.R. #47256 . );/A --- ---

Performed E.Q. inspection. ,

Brc::ksr 23-1-Cub <

f f 325 -

2-250V Battery Preventive W.R. #47330 N/A ---

Adjusted the equalize voltage.

'Charg r 2A Bnttery Corrective W.R. #47644 N/A --- ---

Replaced resistor and adjusted over-Chargar 125V ,

voltage set point.

'/ nubbdr S #33 Preventive W.R. #47792 N/A ---

Reset and pressed bearing.

_2-203-2A '

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - NOVEMBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION

- T.E2-1641-205 Preventive W.R. #47886 N/A --- ---

Performed E.Q. . inspection.

Wida Range Level Preventive W.R. #47993 N/A --- ---

Completed procedure and calibrated Indicator. instrument.

2-263-61

.MOV-1201-1A' Preventive W.R. f48011 N/A --- ---

Performed E.Q.' inspection.

Bus Tie 24-l'to Preventive W.R. f48207 N/A --- ---

Taped 4kv leads.

Bus 24 2B Rx Bldg. Vent Corrective W.R. f48275 N/A --- ---

Replaced bad solenoid valve.

Inlet Damper!

2B574L

- - .. . . = _ . - - , . . ...

DRESDEN UNIT 3 ,

L SAFETY RELATED MAINTENANCE - NOVEMBER, .1985 i

L .- ,

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

L,Icolation Con- Preventive W.R. #38085 .N/A~ --- ---

Checked and found everything ok.

l.danser Valves Off Normal Alarm

'SRM/IRM Detector Corrective W.R. #43700 N/A --- ---~ Moved feed wire and resodered switch.

Pos. Display -

P.B.

D-3 MO-1201-1 Preventive W.R. #43709- N/A ---

. Inspected'and added grease.

ECCS Jockey Pump Preventive W.R. #44108 N/A ---

Packed coupling with grease - all work completed under W.R. 47867.

l MO-3-220-2 Corrective W.R.-#44461 N/A Installed'6 rings of packing in valve.

! Valva l1BMSIVAccumu-- Corrective W.R..#44472 N/A Ground out and welded cracks - replaced l lator gasket on check valve.

SRM 23 Preventive W.R. #44594 N/A ---

Adjusted SRM discriminator voltage.

1. 3 Diesel Preventive W.R. #44885 N/A ---

Performed all procedure _s for annual

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j.Gsnarator inspection.

MO-3-1501-38B Preventive W.R. #44921 N/A --- ---

Repaired light socket.

Valve Local Control Station 3C CCSW RP Feed Preventive'W.R. #45002 N/A ---

Replaced trip coil.

Breaker 3413-1501-44C l

l Cont. Rod C-3 -Preventive-W.R. #46053 N/A --- ---

Replaced coil.

[- (10-11) Scram i Valve Bottom Solenoid i

DRESDEN UNIT 3 .

SAFETY RELATED MAINTENANCE - NOVEMBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 3A CCSW Heat Corrective W.R. #46256 N/A --- ---

Straightened and welded division.

Exch nger Torus N2 Supply Corrective W.R. #46768 N/A --- ---

Replaced solenoid valve with same.

1601-55 LPRM MO-8-25D Preventive W.R. #47333 N/A --- ---

Performed procedure and replaced blown fuse.

LPRM 40-57 Level Preventive W.R. #47445 N/A --- ---

Performed procedure.

"D" 3-705-002 LPRM 08-33 Level Preventive W.R. #47447 N/A --- --~

Performed procedure.

"D" 3-705-002 Alt. Rod Inser- Preventive W.R. #47499 N/A --- ---

Reassembled solenoid valve and reinstalled tion Valve clip.

3-0399-524B Alt. Rod Inser- Preventive W.R. #47500 N/A --- ---

Reassembled solenoid valve and reinstalled tion Valve clip.

3-0399-524A CRD E-6 Corrective W.R. #47501 N/A --- ---

Replaced laaking valve.LPRM 24-33A Preventive W.R. #47578 N/A --- ---

Cleaned connector and performed procedure.

3-705-002 CRD Accumulator Corrective W.R. #47544 N/A --- ---

Tightened nuts to stop leakage.

(14-27) Scram Outlet Valve 305-127 Air H ader Preventive W.R. #47550 N/A --- ---

Replaced internals with like-for-like Supply Valve parts.

1

-DRESDEN UNIT 3 .

SAFETY RELATED MAINTENANCE - NOVEMBER, 1985

! LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Air Lines to Preventive W.R. #47585 N/A --- ---

Disconnected and reconnected fittings -

Accunulator checked air.

30-03

, Plug Off Ports Corrective.W.R. #47586 N/A --- ---

Job on hold to verify plugs.

l on HCV's -

l l

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SIMIARY OF OPERATING EXPERIENCE UNIT TWO NOVEMBER, 1985 11-01-85 to 11-11-85 Unit 2 was taken off-line in late September, 1985 and remained off-line until the reactor was made critical on November 3, 1985 at 1435 hours0.0166 days <br />0.399 hours <br />0.00237 weeks <br />5.460175e-4 months <br />. The turbine was placed on-line November 4, 1985 at 2227 hours0.0258 days <br />0.619 hours <br />0.00368 weeks <br />8.473735e-4 months <br /> and operated through November 11, 1985.

11-12-85 to 11-30-85 On November 12, 1985 at 1114 hours0.0129 days <br />0.309 hours <br />0.00184 weeks <br />4.23877e-4 months <br />, a reactor scram occurred because of a valve failure on an instrument rack during surveillance testing. The reactor was made critical on November 13, 1985 at 0510 hours0.0059 days <br />0.142 hours <br />8.43254e-4 weeks <br />1.94055e-4 months <br /> and the turbine was placed on-line at 1326 hours0.0153 days <br />0.368 hours <br />0.00219 weeks <br />5.04543e-4 months <br /> of the same day.

The unit operated continuously the remainder of the month, steadily increasing load (except for normal weekend surveillances), reaching a power level of 825 MWe with a capacity factor of 67.21% and an availability of 83.24%.

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SUMMARY

OF OPERATING EXPERIENCE UNIT THREE NOVEMBER, 1985 11-01-85 to 11-30-85 Refueling outage activities continued throughout the entire period. The unit is presently scheduled to start up in late June, 1986. Major work includes:

- Local Leak Rate Tests

- Normal Pump (s) and Valve (s) Maintenance

- Decontamination of the Recirculation Piping

- Removal of all fuel from reactor was com-t pleted on November 12, 1985 l

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UNIQUE REPORTING REQUIREMENTS MAIN STEAM RELIEF VALVE OPERATIONS Relief valve operations during the reporting period of October, 1985 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 Reporting Period Actuated Actuations Conditions of Events 2 11-01-85 to 11-30-85 3-203-3A Open/Close Rx pressure All five valves 3-203-3B Open/Close at 300# in were tested per 3-203-3C Open/Close start-up procedure DOS 3-203-3D Open/Close mode after 250-5 on 11/4/85 3-203-3E Open/Close E.Q. Mod's and functioned correctly.

3 11-01-85 to 11-30-85 None

, Commonwealth Edison

. Dresden Nucte:r Power St: tion RR.#1 Morris, !!!inois 60450 Telephone 815/942-2920 December 1, 1985 DJS LTR: 85-1128 Director, Office of Inspection and Enforcement United States Nuclear Regulatory Commission Washington, DC 20555 Attention: Document Control Desk

Dear Sir:

E.1 closed, please find Dresden Station's operating data for last month. This information is supplied to your office per the instruc-tions set forth in Regulatory Guide 1.16.

Sincerely, D. J. Scott Station Manager Dresden Nuclear Power Station DJS: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. Nuc. Sta.

Tech. Staff A.E.

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

Comptroller's Office PIP Coordinator INPO Records Center File /NRC Op. Data File / Numerical Th t

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