ML20136D565

Monthly Operating Repts for Oct 1985

ML20136D565
Person / Time
Site:	Dresden
Issue date:	10/31/1985
From:	Maxwell D, Scott D COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
85-1048, NUDOCS 8511210324
Download: ML20136D565 (24)

Text

'

' OPERATING DATA REPORT DOCKET NO. 050-237 DATE November 1.1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 OPERATING STATUS NOTES

1. Unit Name: Drearten II

2. Reporting Period: october, 1985

3. Licensed Thermal Power (MWt): 2 527

4. Nameplate Rating (Gross MWe): A2a

5. Design Electrical Rating (Net MWe): 794

6. Maximum Dependable capacity (Gross MWe?: a12

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 (Not MWe): N/A

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

11. Hours In Reporting Period 740 7,296 135.600

12. Number of Hours Reactor Was Critical o 3.$1H.2 102.314.0

13. Reactor Reserve Shutdown Hours o o o

14. Hours Generator on-Line o 1.116.H 97.641.2

15. Unit Reserve shutdown Hours o o 0

16. Gross Thermal Energy Generated (MWH) o 1,208.2H2 19H,$4h.34o

17. Gross Electrical Energy Generated (MWH) 0 2.211.578 18.

h3.498.919 Net Electrical Energy Generated (MWH) -9.693 2.113.711 59.982.119

19. Unit service Factor o 45.7 i2.o

20. Unit Availability Factor o 45./ 12.o

21. Unit Capacity Factor (Using MDC Net) 0 37.9 57.3

22. Unit Capacity Factor (Using DER Net) 0 16.H 55.2

23. Unit Forced Outage Rate 100.0 30.8 12.4 >

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

25. If Shut Down At End of Report Period, Estimated Date of Startup: 11-4-85 8511210324 PDR ADOCK OS 85p g ,37 R

1

. OPERATING DATA REPORT DOCKET NO. 050-249 DATE November 1, 1985 COMPLETED BY D. C. Manell TELEPHONE 815/042-2920 OPERATING STATUS NOTES

1. Unit Name: Dresden III

2. Reporting Period: October. 1985 3 Licensed Thermal Power (MWt): 2.527

4. Nameplate Rating (Gross MWe): ann

5. Design Electrical Rating (Net MWe): 794

6. Maximum Dependable Capacity (Gross MWe): 912

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.

II. Hours in Reporting Period 745 7,296 125,185

12. Number of Hours Reactor Was Celtical 648.9 6.718.8 96,596.7

13. Reactor Reserve Shutdown Hours o o o

14. Hours Generator On-Line 636.9 6,621.2 89.193.3

15. Unit Reserve Shutdown Hours o o o

16. Gross Thermal Energy Generated (MWH) 1.280.620 14.715.613 181.772.636

17. Gross Electrical Energy Generated (MWH) 199,614 4,632,256 58,839,233

18. Net Electrical Energy Generated.(MWH) 377,178 4,401,330 55,737,560

19. Unit Service Factor 85.5 90.8 71.7

20. Unit Availability Factor 85.5 90.8 71.7

21. Unit Capacity Factor (Using MDC Net) 65.5 78.0 56.6

22. Unit Capacity Factor (Using DER Net) 63.8 76.0 56.1

23. Unit Forced Outage Rate 2.5 7.7 12.4

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

In 9th Refueling / Recirculation Pipe Replacement outage 25 If Shut Down At End Of Report Period, Estimated Date of Startup: April, 1986

f* -

AVERAGE DAll'! UNIT POWER LEVEL 3 DOCKET NO. 050-237 UillT II DATE November 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920

'HONTH October, 1985 DAY AVERAGE DAILY 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 6 0 22 0 7 0 23 0 2 8 0 24 0 l

l 0 9 25 0 l 10 0 26 0 l

j 11 0 0 27 i

12 0 0 28 13 o 0 l 29 14 0 0-30 0 0 15 31 16 0 I

f

i AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-249 UtilT III DATE November 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE 815/942-2920 MONTH October, 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) '

(MWe-Net) 1 612 17 336 2 656 18 172 3 641 19

. 420 4 648 20 578 )

5 644 21 614 6 648 22 003

) 7 638 23 597 8 623 2h 604 g 639 603 23 10 636 26 533 11 633 601 27 12 627 18 28 624 0 13 29 14 615 0 30 614 0 15 33 16 613 I

I l

l L - , . ~ . . . . . . , , . . . . . . . , - ~ . - . - - - , - _ , . . . . _ , - _ _ - , , - . - - , . - - .

4

• l

. COMMONWEALTH EDISON COMPANY I DRESDEN STATION MAXIMUM DAILY LOAD MONTH OF OCTOBER, 1985 HOUR MAXIMUM DAILY LOAD DAY ENDING KW 1 1100 677,600 2 1200 684,e 6 3 1800 682,500 4 2300 682,500 5 0200 682,700 6 0600 682,000 7 0200 677,700 8 0200 675,500 9 0200 674,600

10 1700 669,700 11 0100 668,200 12 0500 664,700 13 0800 660,300 14 0300 654,800 15 0100 650,100 16 0600 648,000.

17 0600 646,100 18 1700 314,600 19 2400 538,500 20 2100 652,200 21 0300 653,800 l 22 1200 640,200 23 0600 640,300 24 0100 634,800 i

25 0600 632,200 26 2400 647,300 27 0100 645,400 28 0100 252,800 29 --

0 30 --

0 31 --

0 l

DOCKET NO. 050-237 UNIT NAME Dresden II UNIT SHUTDOWNS AND POWER REDUCTIONS DATE November 1, 1985 .

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

REPORT MONTH OCTOBER, 1985 METHOD OF LICENSEE No. DATE' TYPEI DURATION CAUSE & CORRECTIVE REASON 2 SHUTTING EVENT SYSTEM COMPONENT ACTION TO -

(HOURS) DOWN REACTOR 3 REPORT F CODE 4 CODES PREVENT RECURRENCE 8 .85-09-29 S 745.00 H 3 85-035-0 -- --

Unit was taken off-line manually for snubber inspections and E.Q.

modifications (Rx scram 215. hours after off-line because of low condenser vacuum).

l 2

!1 2 3 4 F: Forced Reason:

S: Scheduled Method: Exhibit G-Instructions for A-Equipment Failure (Explain) 1-Manual Preparation of Data B-Maintenance on Test 2-Manual Scram Entry Sheets for Licensee C-Refueling D-Regulatory Restriction 3:-Automatic ' Scram Event Report ( ) File 4-Other (Explain) (NUREG-0161)

E-Operator Training & License Examination .

F-Administrative i

, G-Operational Error '

+

H-Other (Explain)

DOCKET NO. 050-249 UNIT NAME Dresden III UNIT SHUTDOWNS AND POWER REDUCTIONS DATE November 1, 1985 COMPLETED BY D. C. Maxwell TELEPHONE (815) 942-2920 REPORT HONTH OCTOBER, 1985 HETHOD OF LICENSEE CAUSE & CORRECTIVE NO. DATE' TYPEl DURATION REASON 2 SHUTTING EVENT SYSTEN COMPONENT ACTION TO -

(HOURS) DOWN REACTOR 3 REPORT F CODE 4 CODES PREVENT RECURRENCE 5 85-10-17 F 16:29 .C 3 -- -- --

Personnel error - low Rx water (16.5) level.

l 6 '85-10-28 S 91:40 C 1 -- -- --

Offeline manually to 9th (91.7) .

Refueling / Recirculation Pipe

. Replacement Outage.

I e

.i t

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 ( ) File D-Regulatory Restriction 4-Other (Explain) l E-Operator Training & License Examination (NUREG-0161) 4 F-Administrative

I G-Operational Error

{ ,

i H-Other (Explain)

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

1.

l .i l DRESDEN UNIT 2 l'

l -. -

SAFETY RELATED MAINTENANCE - OCTOBER, 1985 LER.OR OUTAGE MALFUNCTION EQUIPMENTi NATURE OF MAINTENANCE NUMBER CAUSE ~ RESULT CORRECTIVE ~ ACTION -

l

. =2-2301-28 Valve. Preventive;W.R. #32060 N/A .--- ---

Tested-and found no double indication.-

l .

lMO-2-202-6B- Preventive W.R. f34365 N/A --- ---

Performed procedure and changed motor limits and torque switch.

i.

i 480V MCC 28-7 Preventive W.R.'#36626' N/A --- ---

Replaced fuses and fuse holder. .

l Motor Control Csnter U-2 Accumulator Corrective W.R.'#36752 N/A --- --- Installed new valve bonnet, disc, stem 58-39 and flex gasket.

L Shutdown Cooling Preventive W.R._#36805- N/A --- ---

Replaced limit switch assembly, greased .

! "B" Inlet Isola- stem and cycled valve.

l tion Valve l:2-1001-1B-

. Instrurent ' Preventive W.R. #37683 'N/A' Replaced valve - no leak'present.

(Icolation' Valve i for PS-2-263-55C Valva fM02-1402- . Corrective W.R. f38051 N/A. --- Installed new seal rings, studs and nuts.

25B cRx Racirculation Preventive W.R.~#38408 - N/A --- ---

Replaced frayed wire.

PP 2-202-5B Disc Valva

1. 2 Dies'el:- Preventive W.R. f38571- 'N/A. ---

Performed 3 and 6 month inspection.

! Gsnsrator 125 VDC Battery' Corrective W.R. f40575- N/A' --- Adjusted trip voltage and readjusted

.Chargtr 2A equalizer.

l TCCSW Pump "B" and Preventive W.R. f40839 N/A Sealed leaking penetrations.

"C" Electrical

-Panstration

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

Rzfual Grapple Preventive W.R. #41139 ---

N/A N/A Installed jumpers, reinstalled switches and removed jumpers.

U-2 MOV 7504A . Preventive W.R. #42076 ---

N/A N/A Performed. environmentally qualified inspection.

U-2 MOV 1401-38A Preventive W.R. #42086 ---

N/A N/A Performed environmentally qualified inspection.

.U-2 MOV 1402-24A ' Preventive W.R. #42101 ---

N/A N/A Performed environmentally qualified inspection.

U-2 MOV-2301-4 Preventive W.R. #42105 ---

N/A N/A Performed environmentally qualified inspection.

U-2 MOV 205-2-4 Preventive W.R. #42114 N/A N/A Performed environmentally qualified inspection.

Bus 24-1 Under- Preventive W.R. #42482 N/A N/A Cleaned J switch and operated - works voltage correctly.

A0-1601-20B Air Preventive W.R. #42647 ---

N/A N/A Replaced sealtite and wiring from '

Pressure Switch" junction box to pressure switch.

A02-1601-20B. Preventive W.R. #42648 ---

N/A N/A Reinstalled pressure switch, replaced Pressure Switch- copper tubing and tested per procedure.

SBGT Damper 7509 Preventive W.R. #42837 ---

N/A N/A Adjusted closed limit switch.

U-2 24/48 Volt . Preventive.W.R. #43177 N/A N/A Adjusted float and equalized voltage on Battery Charger' all chargers.

2C CCSW Cubicle Preventive W.R. #43319 ---

N/A N/A Repaired and cleaned switch to cooler Cooler Fans fans.

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

MOV-1501-11A Preventive W.R. #43600 N/A --- ---

Completed work per procedure.

MOV-1501-21A Preventive W.R. #43602 N/A -- ---

Performed work per procedure.

MOV-1501-27A Preventive W.R. #43604 N/A --- ---

Performed work per procedure.

MOV-1501-28A Preventive W.R. #43606 N/A --- ---

Performed work per procedure.

MOV-1501-32A Preventive W.R. #43608 N/A --- ---

Performed work per procedure.

HPCI Turning Preventive W.R. #43811 N/A --- ---

Ran HPCI turning gear - all worked Gaar correctly.

.U-2 203-1D MSIV Preventive W.R. #44172 N/A --- ---

Wired switches to conform to prints and adjusted actuating roller length.

LPRM 6C 40-09 Preventive W.R. #44290 N/A --- ---

Repaired LPRM card and tested.

HPCI 2301-4 MOV Preventive W.R. #44369 N/A --- ---

Replaced auxiliary contact hit for contactor relay.

APRM Channel 1 Preventive W.R. #44607 N/A --- ---

Performed procedure and replaced polentro-meter on W.R. #39435.

CRD Accumulator . Corrective W.R. #44697 N/A --- ---

Repaired broken support on doors.

Trouble LPRM 3B 56-41 Preventive W.R. #44932 N/A --- ---

Completed test per procedure.

2-705-002 LPRM 3D 2-705- Preventive W.R. #44933 N/A ---

Repairs completed per procedure.

002-48-31 LPRM 4C 40-33 Preventive W.R. #44934 N/A --- ---

Performed procedure, spiking repaired.

705-002

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - OCTOBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION R3fusl Grapple Preventive W.R. #44942 N/A --- ---

Installed new 4-way solenoid valve.

Dryw311 Equip- Preventive W.R. #44972 N/A --- ---

Adjusted limit switch for proper ment Drain Isola ~ operation.

tion Valve 2-2001-5 -

Rsity 590-1000 Preventive W.R. #45026 N/A --- ---

Checked relay, wire co..nectCons and terminal block - all ok. IM's checking on another Work Request.

Accu:ulator Preventive W.R. #45362 N/A --- ---

Tightened fittings on scram pilot valve.

18-11 LPRM 16-09 Level Preventive W.R. #45364 N/A --- ---

Performed procedure - repaired spiking B2-705-002 problem.

R-actor Mode Preventive W.R. #45451 N/A --- ---

Inspected contacts and wires. All appears Switch to be in good condition.

1D MSIV 2-203-lD Preventive W.R. #45509 N/A --- ---

Adjusted limit switch.

CRD J-6 2-305- Corrective W.R. #45608 N/A --- ---

Adjusted stem to repair leaking valve.

127 SDVFCI and Bor- Preventive W.R. #45635 N/A --- ---

Checked alarms by performing procedure.

ton LT LS-2-302-82A,G,D,K,C Accu 1ulator Corrective W.R. #45636 N/A --- ---

Adjusted valve by rotating stem.

34-23 J-6 Rod Out Notch Preventive W.R. #45641 N/A --- ---

Cleaned switch - works correctly.

Ovirride Knob

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - OCTOBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Accumulator Corrective W.R. #45698 N/A --- ---

Adjusted stop nut to proper sistance.

46-11 .LPRM 25-57D Preventive W.R. #45737 N/A --- ---

Checked LPRM per procedure.

2-705-002 HPCI Oil Filter Corrective W.R. #45797 N/A --- ---

Unstacked and washed dirty water elements -

reinstalled and reassembled unit.

Accurulator Corrective W.R. #45697 N/A --- ---

Adjusted stop nut to proper sistance.

34-23 Off-Gao "B" Preventive W.R. #45758 N/A --- ---

Calibrated per procedure.

Radiction Moni-tor 2-1705-3-B Tarus IB Sample Preventive W.R. #45921 N/A --- ---

Cycled valves - everything appears to be Vr.lvt Indicator working correctly.

Switch U-2 24/48 VDC Preventive W.R. #45923 N/A --- ---

Tested timer several times - worked' Battsry Charger correctly.

Dryw311 and Preventive W.R. #46146 N/A --- ---

Calibrated per procedure.

Taru: CAM H 2 Sin:c r 2-2445-A cnd B RBM Chcnnel 8 Preventive W.R. #46151 N/A --- ---

Calibrated and replaced bad trip card ref.

APRM 1 Preventive W.R. #46250 N/A --- ---

Performed procedure and lowered setpoints.

IRM #17 2-750- Preventive W.R. #46316 N/A --- ---

Replaced faulty preamplifier and performed 23B procedure.

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - OCTOBER, 1985 LER OR OUTAGE MALF31NCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION -

2B MSL Rad Moni- Preventive W.R. #46442 N/A --- ---

Replaced resistor per procedure.

tor 2-1705 APRM Channel 1 Preventive W.R. #46471 N/A --- ---

Readjusted scram trip point.

H2 R g ACAD/ CAM Preventive W.R. #46480- N/A --- ---

Adjusted and replaced regulator - checked Ecit #2 for leaks.

Scrri Discharge Preventive W.R. #46494 N/A --- ---

Installed and removed temperature recorder Volume FCI for scram testing.

2-302-82 Accuculator Preventive W.R. #46539 N/A --- ---

Replaced accumulator.

14-11 2-300 CRD Accumulator Corrective W.R. #46609 N/A --- ---

Changed accumulator and upper and lower 42-07 0-rings.

Nrrrow Range Preventive W.R. #46698 N/A --- ---

Performed procedure and recalibrated per Torus Level procedure.

Indicrtor LI 2-1602-03 Turbina First Preventive W.R. #46730 N/A --- ---

Checked calibration per procedure - all Stags Pressure operates properly.

Switch;s 2-504A and C Vniva 2-2301-9 Preventive W.R. #46790 N/A --- ---

Replaced bulbs in indicators and cycled valve.

2-203-3D Corrective W.R. #46846 N/A --- ---

Installed new 3000 LB A-105 Union and re-Elc ctromatic threaded line.

Sicondiry Con- Preventive W.R. #46979 N/A --- ---

Removed and installed flanges for hydro-trinment Pene- lyzing.

tretion

3 .

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - OCTOBER, 1985

~

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

APRM Scram and Preventive W.R. #47225 N/A --- ---

Completed procedure for APRM scram and R.B. S:tpoint rod block.

U-2 RBM's Prever.cive W.R. #47226 N/A --- ---

Removed forms and completed procedure.

U-2 HPCI Room Preventive W.R. #47281* N/A --- ---

Changed motor and belt fans.

Coolir MSIV Terminal Preventive W.R. #25234 N/A --- ---

Replaced cll terminal blocks and junction Blocks boxes for switches and valves.

IRM Channel 16 Preventive W.R. #32350 N/A --- ---

Replaced selector and performed procedure.

IRM 16 Preventive W.R. #43887 N/A --- ---

Replaced ext. cable and connector in junction box.LPRM 08-17C Preventive W.R. #44473 N/A --- ---

Replaced RPM amplifier.

Main Steam Line Corrective W.R. #45846 N/A --- ---

Calibrated per procedure - replaced meter Hi Flow Switch movement.

Scrca Discharge Preventive W.R. #46423 N/A --- ---

Changed trip setpoint - completed Volume Level procedure.

Sin ora FCI's 2-302-82 U-2 "D" MSL Rad Preventive W.R. #47537 N/A --- ---

Replaced rad monitor and performed Monitor LRM procedure.

2-1705-2D LPRM 56-33D Preventive W.R. #46162 N/A --- ---

Performed procedure - no problem found.

2-705-002 LPRM 16-49C, Preventive W.R. #44281 N/A --- ---

Performed procedure.

GP1, 2-705-002

DRESDEN UNIT 2 SAFETY RELATED MAINTENANCE - OCTOBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION LPRM 32-49-B Preventive W.R. #44741 N/A --- ---

Checked LPRM per procedure - no problem 2-705-002 found. -

LPRM 32-25B Preventive W.R. #44803 N/A --- ---

Checked LPRM per procedure - no problem Chinnal 5 found.

2-705-002 -

LPRM 48-49C Preventive W.R. #45541 N/A --- ---

Performed procedure - no problem found.

2-705-002 LPRM 24-57B Preventive W.R. #46030 N/A --- ---

Performed procedure - no problem found.

2-705-002 LPRM 24-57B Preventive W.R. #46035 N/A --- ---

Performed procedure - no problem found.

2-705-002 LPRM 08-25D Preventive W.R. #47041 N/A --- ---

Performed procedure - no problem found.

2-705-002

DRESDEN UNIT 2/3 SAFETY RELATED MAINTENANCE - OCTOBER, 1985 LER OR OUTAGE MALFUNCTION

___ EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION MOV 7504B Preventive W.R. #43613 N/A --- ---

Replaced grease in L.S., replaced internal wiring and spliced MTR lead connections.

MOV 7505B Preventive W.R. #43615 N/A --- ---

Replaced grease, internal wiring and spliced meter lead connections.

MOV 7507B Preventive W.R. #43617 N/A --- ---

Replaced grease, internal wiring and spliced meter lead connections.

Spara Accumu- Corrective W.R. #46710 N/A --- ---

Rebuilt accumulator.

1stor

I DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - OCTOBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION

• LPRM 24-41 A Preventive W.R. #28369 N/A --- LPRM will be changed out on Work Request

, (APRM #3) #45749.

• 2-705-002 R;fupl Grapple Preventive-W.R. #38980 N/A ---

Removed caution card and cable - restored to service.

Screa Discharge Preventive W.R. #39916 N/A --- ---

Replaced alarm card.

Volume Annuncia-tor U-2 24/48V "B" Preventive W.R. #40564 N/A ---

Adjusted knob on timer for proper reading.

Top Battery Chargtr M03-2301-3 Local Preventive W.R. #41578 N/A --- ---

Replaced bulb from 125 to 250V.

Indicstor Light M03-2301-14 Preventive W.R. #41579 N/A --- ---

Replaced bulb from 125 to 250V.

Local Indicating Light

, MOV-1501-3A Preventive W.R. #43440 N/A --- ---

Performed E.Q. inspection.

U-3:125 VDC Preventive W.R. #43668 N/A --- ---

Taped up disc lead - ground disappeared.

Cround Alarm t

3-1601-58 Valve Preventive W.R. #44896 N/A - ,- ---

Adjusted limit switch arm.

MO-220-2 Preventive W.R. #45504 N/A --- ---

Back-seated valve per procedure.

M03-1402-3A Corrective W.R. #46219 N/A ---

Replaced burnt control transformer.

3C CCSW Vault Preventive W.R. #46231 N/A --- ---

Replaced leaking piece of pipe.

Coolsr

DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - OCTOBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION ,

M03-1501-5B Preventive W.R. #46292 N/A --- ---

Tested 3 times and light indication was correct. .

Cara Spray MOV Preventive W.R. #46309 N/A --- ---

Checked indicating lights - were working.

3-1402-4B correctly.

LDryw211 and Preventive W.R. #46311 N/A --- ---

Calibrated drywell analyzer per procedure.

Tcrus CAM H2 SInser APRM Scram Rod Preventive W.R. #46352 N/A --- ---

Completed setpoint change per procedure.

Block Lines and

.Satpoints RBM Sstpoints Preventi/e W.R. #46355 N/A --- ---

Completed set point change per procedure.LPRM 16-49D Preventive W.R. #46369 N/A -- ---

Performed procedure - found no significant 3-705-002 problem.

Frane Hoise Preventive W.R. #46372 N/A ---

Adjusted upper limit - working properly.

APRM Channel 1. Preventive W.R. #46393 N/A Readjusted setpoints per procedure.

NM3-753-1 U-3 APRM's Preventive W.R. #46421- N/A ---

Reset flow trip setpoints per procedure.

U-3 RBM 500 Preventive W.R. #46422 N/A --- ---

Reset setpoints per procedure.

Flow Controller Preventive W.R. #46446 N/A Checked flow transmitter and flow LPCI H2at indicator per procedure - runs properly.

Exch;nger "A" Pt. 1542A LPCI Hx'Dischargo Corrective W.R. #46450 N/A Replaced mercury wetted relay in modu-Valva 3-1501-3A lator.

C_ _ _ _ . - _ _ _ . _ _ _ . _ _ _ _

DRESDEN UNIT 3 SAFETY RELATED MAINTENANCE - OCTOBER, 1985 LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION 3A CCSW Flow Corrective W.R. #46472 N/A --- ---

Calibrated and checked per procedure.

FI 3-1540-1A .

1501-3B CCSW Corrective W.R. #46490 N/A --- ---

Repositioned potentiometer.

Vrivs 3A CCSW Pump Preventive 7.R. #46563 N/A --- ---

Checked and cleaned entire pump - runs properly.

Rx Building Corrective W.R. #46627 N/A --- ---

Removed flange and elbow from valve P:;n:trstion penetration.

Torus Wide Range Corrective W.R. #46670 N/A --- ---

Calibrated transmitter per procedure.

L; val Trans-citt:r MOV 1402-4A Preventive W.R. #46786 N/A --- ---

Checked all bulbs - everything ok - found no problem.

U-3 Torus Temp. Corrective W.R. #46816 N/A --- ---

Tested the recorders and setpoints per R;cordsr 3-1640- procedure.

200B ATWS Div. 11 Preventive W.R. #46898 N/A --- ---

Recalibrated transmitter, master trip Prcerure Indica- unit and indicator per procedure.

tor PT 3-363-20B MIV 263-22B HPCI Area Preventive W.R. #46932 N/A ---

Lubricated and changed auxiliary contacts.

Cooling Fan Brsak:r Torus Level Preventive W.R. #45829 N/A --- ---

Cleaned dirty site glass and completed 1602-3 normal surveillance.

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I j DRESDEN UNIT 3 i

l SAFETY RELATED MAINTENANCE - OCTOBER, 1985 l LER OR OUTAGE MALFUNCTION EQUIPMENT NATURE OF MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION .

< ATWAS Div. II- Preventive W.R. f46945 N/A --- ---

Replaced transmitter amplifier circuit "B" Prsssure card - calibrated per procedure. -

j'PT3-263-20B Div, II Torus Preventive W.R. #47434 N/A --- ---

Adjusted chart motor drive belts.

TImparature R:cordar TR3-1640-200B Tarus Temperaturo Preventive W.R. #47587 N/A --- ---

Replaced worn switch drive belt and l Ricordar Div. I realigned. cleaned and lubricated print i 3-1640-200A mechanism.

i CRD Accumulator. Preventive W.R. #47647 N/A Replaced defective switch and calibrated L(06-47) (B-12) per procedure.

! PS 3-305-130 I 117 Velve on Preventive W.R. #47611 N/A --- ---

Rebuilt scram pilot valves.

, HCU f46-15 f-l IRM Chnnnel 16 Preventive W.R. #47696 N/A ---

Checked - no problems found.

RE 3-760D 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 10-01-85 to 10-31-85 None 3- 10-01-85 to 10-31-85 None

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SUMMARY

OF OPERATING EXPERIENCE UNIT TWO h OCTOBER, 1985-

01-85 to 10-31 -Unit 2 was taken off-line late in September, 1985

"> 'and remained off-line during the entire month of

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i October, 1985 for snubber inspections and Environ-I mental Qualification modifications.

~f Capacity factor and availability are 0% for the j month.

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SUMMARY

OF OPERATING EXPERIENCE UNIT THREE OCTOBER, 1985 J

l 10-01-85 to 10-16-85 Unit 3 entered the month operating at a power level of 675 MWe and operated continuously through

$ October 16, 1985, 10-17-85 to 10-18-85 On October 17, l'985 at 1326, a low water level reactor scram and turbine trip occurred because of j i feedwater regulator valve controller unbalance. The j reactor was made critical at 2320 hours0.0269 days <br />0.644 hours <br />0.00384 weeks <br />8.8276e-4 months <br /> and the unit 3 was brought on-line October 18, 1985 at 0555 hours0.00642 days <br />0.154 hours <br />9.176587e-4 weeks <br />2.111775e-4 months <br />.

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10-19-85 to 10-31-85 The unit operated continuously, steadily increasing i

4 load through October 20, 1985 and then at maximum p flow until October. 28, 1985 at 0420 when it was 1

manually taken off-line for its 9th Refueling /

l Recirculation Pipe Replacement Outage. The avail-1 ability was 85.48% and capacity factor was 64.47%.

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Commonwe:lth Edison Dresden NucteIr Power Stiti n R.R. #1 . ,

Morris, Illinois 60450 Telephone 815/942-2920 November 1, 1985 DJS LTR: 85-1048 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 last month. This information is supplied to your office per the instruc-tions set forth in Regulatory Guide 1.16.

Sincerely, D. . 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 ,

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